Mk7 Manual:
M.M. Valves and
Servomotors
Mk7 Manual:
M.M. Valves and Servomotors
Issued by:
AUTOFLAME ENGINEERING LTD
Unit 1-2, Concorde Business Centre
Airport Industrial Estate, Wireless Road
Biggin Hill, Kent TN16 3YN
Tel: +44 (0)845 872 2000
Fax: +44 (0)845 872 2010
Email: [email protected]
Website: http://www.autoflame.com/
Registered Holder:
Company:
Department:
This manual and all the information contained herein is copyright of
Autoflame Engineering Ltd. It may not be copied in the whole or part without
the consent of the Managing Director.
Autoflame Engineering Ltd’s policy is one of continuous improvement in both
design and manufacture. We therefore reserve the right to amend
specifications and/pr data without prior notice. All details contained in this
manual are correct at the time of going to print.
Important Notes
A knowledge of combustion related procedures and commissioning is essential before
embarking work on any of the M.M./E.G.A. systems. This is for safety reasons and
effective use of the M.M./ E.G.A. system. Hands on training is required. For details on
schedules and fees relating to group training courses and individual instruction, please
contact the Autoflame Engineering Ltd. offices at the address listed on the front.
Short Form - General Terms and Conditions
A full statement of our business terms and conditions are printed on the reverse of all
invoices. A copy of these can be issued upon application, if requested in writing.
The System equipment and control concepts referred to in this Manual MUST be installed,
commissioned and applied by personnel skilled in the various technical disciplines that
are inherent to the Autoflame product range, i.e. combustion, electrical and control.
The sale of Autoflame’s systems and equipment referred to in this Manual assume that
the dealer, purchaser and installer has the necessary skills at his disposal. i.e. A high
degree of combustion engineering experience, and a thorough understanding of the
local electrical codes of practice concerning boilers, burners and their ancillary systems
and equipment.
Autoflame’s warranty from point of sale is two years on all electronic systems and
components.
One year on all mechanical systems, components and sensors.
The warranty assumes that all equipment supplied will be used for the purpose that
it was intended and in strict compliance with our technical recommendations. Autoflame’s warranty and guarantee is limited strictly to product build quality, and design.
Excluded absolutely are any claims arising from misapplication, incorrect installation
and/or incorrect commissioning.
Contents
1
VALVE SPECIFICATIONS .......................................................................................... 1
1.1
1.1.1
Autoflame Butterfly Valve Flow Data .............................................................................. 2
1.1.2
Spillback/ Bypass Application ........................................................................................ 3
1.1.3
Metering/Simplex Application ....................................................................................... 4
1.1.4
Oil Valve Flow Characteristics ........................................................................................ 5
1.2
Gas Valve Selection ............................................................................................................ 13
1.2.1
Threaded (Metric) – Small Servomotor ....................................................................... 13
1.2.2
Threaded (Imperial) – Small Servomotor .................................................................... 15
1.2.3
Flanged (30mm Thick Metric) – Small Servomotor ..................................................... 16
1.2.4
Flanged (30mm Thick Imperial) – Small Servomotor .................................................. 18
1.2.5
Flanged (50mm Thick Metric) – Large Servomotor ..................................................... 19
1.2.6
Flanged (50mm Thick Imperial) – Large Servomotor .................................................. 21
1.3
Oil Valve Selection .............................................................................................................. 22
1.3.1
Small Metering/ Simplex Application .......................................................................... 23
1.3.2
Small Spillback/Bypass Application ............................................................................ 26
1.3.3
Large Metering/Simplex Application .......................................................................... 29
1.3.4
Large Spillback/ Bypass Application ........................................................................... 32
1.4
Piggy-Back Assembly ........................................................................................................... 35
1.4.1
Gas and Oil Valve Threaded ....................................................................................... 35
1.4.2
Gas and Oil Valve Flanged ......................................................................................... 37
1.5
2
Valve Sizing ............................................................................................................................ 2
FGR Valves .......................................................................................................................... 39
SERVOMOTORS ................................................................................................... 40
2.1
2.1.1
2.2
2.2.1
2.3
Small Positioning Motor ....................................................................................................... 40
Small Servomotor Mounting Bracket and Coupling ..................................................... 42
Large Positioning Motor ...................................................................................................... 43
Large Servomotor Mounting Bracket and Coupling .................................................... 45
Industrial Servomotor .......................................................................................................... 46
2.3.1
Overview ..................................................................................................................... 46
2.3.2
External Drawings ....................................................................................................... 47
2.3.3
Dimensions................................................................................................................... 48
2.3.4
Specifications ............................................................................................................... 49
2.3.5
Installation ................................................................................................................... 50
2.3.6
Manual Operation ....................................................................................................... 51
2.3.7
Troubleshooting ........................................................................................................... 52
3
WATER LEVEL VALVES............................................................................................ 53
3.1
Feed Water Valve................................................................................................................. 53
3.1.1
Feed Water Valve Specifications ................................................................................. 54
3.1.2
Sizing Calculations ...................................................................................................... 55
3.1.3
Flanged Feed Water Valve .......................................................................................... 56
3.1.4
Threaded ½” Feed Water Valve with Small Servomotor ............................................ 58
3.1.5
Threaded ¾” Feed Water Valve with Large Servomotor ............................................ 59
3.2
Bottom Blowdown Valve ...................................................................................................... 60
3.2.1
Valve Specifications ..................................................................................................... 60
3.2.2.
Bottom Blowdown Valve Drawings .............................................................................. 61
1 Valve Specifications
1
VALVE SPECIFICATIONS
The standard execution of the gas valve is an aluminium body with stainless steel metering disk and
stem. The gas valves can also be supplied for corrosive/contaminated fuels in all stainless steel
construction. Price on application.
When using high viscosity low temperature fuel oils through smaller valves, turbulent flow
characteristics can reduce volume throughput significantly.
All flow pressure graphs published for oil valves are using light distillate oil @ 20oC and a viscosity of 5
centistokes.
Autoflame will carry out flow characteristics test on specific valves against customer fuel/ viscosity and
temperature specifications. Price on application.
Standard oil valve build execution is stainless steel valve body with stainless steel bobbin. The top and
bottom closing plates are manufactured out of aluminium.
All valves can be supplied in non-standard material at extra cost. Price on application.
The standard execution of the FGR valve (flue gas recirculation) is a stainless steel body with stainless
steel disk and stem but is dependent upon the application. Two grease nipple points are used for easy
service of the FGR valves.
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 1
1 Valve Specifications
1.1
Valve Sizing
1.1.1
Autoflame Butterfly Valve Flow Data
Page 2
Mk7 Manual: M.M. Valves and Servomotors
July 2014
1 Valve Specifications
1.1.2
Spillback/ Bypass Application
Information Required
Actual Data
Oil Pump Flow
Oil Pump Pressure
Solenoid Delta P. (both valves
Nozzle Maximum Working Pressure
Nozzle Size (lb/hr)
Return Oil Pressure at Low Fire
Oil Type: #2, #4, or #6
Typical Data
1.6X Nozzle size
350 to 450 PSI
4 to 20 PSI
300 PSI
1000 lb/hr
80 to 120 PSI
#2
When sizing the oil valve for bypass systems. We have to determine the amount of oil being returned
to the pump/tank at low fire and at what pressure. This information is then used against the valve
charts in the Section 1.5.3. At low fire, the valve is most open and producing maximum flow.
Based on the above example:
1000lb/hr x 1.6
= 1600lb/hr
Low fire oil requirement = 250lb/hr (based at 4:1 turndown = 1000/4)
1600lb/hr – 250lb/hr
= 1350lb/hr
Spillback oil flow
= 1350lb/hr @ 100PSI
Therefore, based on the charts in Section 1.5.4, the correct valve would be type 5.
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 3
1 Valve Specifications
1.1.3
Metering/Simplex Application
Sizing Method
The following must be completed before the oil valve can be correctly sized for the pressure drop, at
the metering valve. Together with the maximum oil flow, this will determine the valve required, based
on the charts in section 1.5.4.
A–C–D=B
A = Output pressure at regulator
C = Solenoid valves pressure difference
D = Nozzle pressure difference
Example:
Knows parameters are pump max flow and pressure output. To determine the flow and pressure drop
across the nozzle:
The difference between Valve A, C and D is applied to the charts in Section 1.5.4.
A = 300PSI
C = 20PSI
D = 100PSI
B = 300PSI – 20PSI – 100PSI = 180PSI pressure difference
So the valve required needs to meet an oil flow of 100GPH @ 180PDI P.D.
Page 4
Mk7 Manual: M.M. Valves and Servomotors
July 2014
1 Valve Specifications
1.1.4
July 2014
Oil Valve Flow Characteristics
Mk7 Manual: M.M. Valves and Servomotors
Page 5
1 Valve Specifications
Page 6
Mk7 Manual: M.M. Valves and Servomotors
July 2014
1 Valve Specifications
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 7
1 Valve Specifications
Page 8
Mk7 Manual: M.M. Valves and Servomotors
July 2014
1 Valve Specifications
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 9
1 Valve Specifications
Page 10
Mk7 Manual: M.M. Valves and Servomotors
July 2014
1 Valve Specifications
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 11
1 Valve Specifications
Page 12
Mk7 Manual: M.M. Valves and Servomotors
July 2014
1 Valve Specifications
1.2
Gas Valve Selection
1.2.1
Threaded (Metric) – Small Servomotor
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 13
1 Valve Specifications
Cable Gland PG11 (1/2” NPSM)
A
H
F
Thread
E
D
Oil Control Valve/
Gas Coupling
B
G
C
PART NO.
A
B
C
D
E
F
G
H
VALVE SIZE
GV42521
100
54
97
85
45
65
88
180
25 (1”)
GV44022
100
67
103.5
100
60
65
88
195
40 (1.5”)
GV45023
100
76
108
110
70
65
88
205
50 (2”)
GV46524
100
90
115
124
85
65
88
220
65 (2.5”)
GV48025
100
105
123
140
100
65
88
235
80 (3”)
Page 14
Mk7 Manual: M.M. Valves and Servomotors
July 2014
1 Valve Specifications
1.2.2
Threaded (Imperial) – Small Servomotor
Cable Gland PG11 (1/2” NPSM Adaptor)
A
H
F
Thread
E
D
Oil Control Valve/
Gas Coupling
B
G
C
PART NO.
A
B
C
D
E
F
G
H
VALVE SIZE
GV42521
4”
2.126”
3.87”
3.37”
1.77”
2.55”
3.70”
7.03”
1”
GV44022
4”
2.64”
4.13”
3.96”
2.36”
2.55”
3.70”
7.62”
1.5”
GV45023
4”
3”
4.31”
4.35”
2.76”
2.55”
3.70”
8.01”
2”
GV46524
4”
3.54”
4.60”
4.94”
3.35”
2.55”
3.70”
8.60”
2.5”
GV48025
4”
4.13”
4.85”
5.53”
3.94”
2.55”
3.70”
9.19”
3”
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 15
1 Valve Specifications
1.2.3
Page 16
Flanged (30mm Thick Metric) – Small Servomotor
Mk7 Manual: M.M. Valves and Servomotors
July 2014
1 Valve Specifications
F
A
Cable Gland PG11
(1/2” NPSM
Adaptor)
Oil Control Valve/
Gas Coupling
E
D
H
C
No. of Holes
B
G
PART NO.
A
B
C
D
E
F
G
H
BOLTING
VALVE SIZE
GVF45028/30
100
165
4
197
157
66
30
291
M16 X 110
50 (2”)
GVF46526/30
100
185
4
219
178
66
30
312
M16 X 110
65 (2.5”)
GVF48027/30
100
200
8
234
194
66
30
327
M16 X 110
80 (3”)
GVF410026/30
100
220
8
254
214
66
30
347
M16 X 110
100 (4”)
GVF12527/30
100
250
8
285
245
66
30
378
M16 X 110
125 (5”)
GVF415028/30
100
285
8
321
281
66
30
414
M20 X 110
150 (6”)
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 17
1 Valve Specifications
1.2.4
Flanged (30mm Thick Imperial) – Small Servomotor
Cable Gland PG11
(1/2” NPSM Adaptor)
F
A
Oil Control Valve/
Gas Coupling
E
D
H
C
No. of Holes
B
G
PART NO.
A
B
C
D
E
F
G
H
BOLTING
VALVE
SIZE
GVF45028/30U
4”
6.5”
4
7.78”
6.19”
2.55”
1.18”
11.44”
5/8” X 4”
2”
GVF46526/30U
4”
7.29”
4
8.61”
7.01”
2.55”
1.18”
12.27”
5/8” X 4”
2.5”
GVF48027/30U
4”
7.87”
4
9.22”
7.63”
2.55”
1.18”
12.88”
5/8” X 4”
3”
GVF410026/30U
4”
8.66”
8
10.03”
8.44”
2.55”
1.18”
13.69”
5/8” X 4”
4”
GVF12527/30U
4”
9.84”
8
11.24”
9.65”
2.55”
1.18”
14.90”
5/8” X 4”
5”
GVF415028/30U
4”
11.22”
8
12.64”
11.05”
2.55”
1.18”
16.30”
3/4” X 4”
6”
Page 18
Mk7 Manual: M.M. Valves and Servomotors
July 2014
1 Valve Specifications
1.2.5
July 2014
Flanged (50mm Thick Metric) – Large Servomotor
Mk7 Manual: M.M. Valves and Servomotors
Page 19
1 Valve Specifications
A
F
Cable Gland PG11
(1/2” NPSM
Adaptor)
H
Oil Control Valve/
Gas Coupling
E
D
C
No. of Holes
G
B
PART NO.
A
B
C
D
E
F
G
H
BOLTING
VALVE SIZE
GVF45028/50
142
165
4
207
157
92
50
319
M16 X 130
51 (2”)
GVF46526/50
142
185
4
228
178
92
50
340
M16 X 130
64 (2.5”)
GVF48027/50
142
200
8
244
193
92
50
356
M16 X 130
76 (3”)
GVF410026/50
142
220
8
264
214
92
50
376
M16 X 130
102 (4”)
GVF12527/50
142
250
8
295
245
92
50
407
M16 X 130
127 (5”)
GVF415028/50
142
285
8
331
281
92
50
443
M20 X 130
153 (6”)
GVF420029/50
142
340
12
385
336
92
50
497
M20 X 130
203 (8”)
Page 20
Mk7 Manual: M.M. Valves and Servomotors
July 2014
1 Valve Specifications
1.2.6
Flanged (50mm Thick Imperial) – Large Servomotor
A
F
Cable Gland PG11
(1/2” NPSM
Adaptor)
H
Oil Control Valve/
Gas Coupling
E
D
C
No. of Holes
G
B
PART NO.
A
B
C
D
E
F
G
H
BOLTING
VALVE SIZE
GVF45028/50U
5.59”
6.50”
4
8.18”
6.19”
3.60”
1.97”
12.58”
5/8” X 5”
2”
GVF46526/50U
5.59”
7.28”
4
9.00”
7.01”
3.60”
1.97”
13.40”
5/8” X 5”
2.5”
GVF48027/50U
5.59”
7.87”
8
9.61”
7.63”
3.60”
1.97”
14.00”
5/8” X 5”
3”
GVF410026/50U
5.59”
8.66”
8
10.42”
8.44”
3.60”
1.97”
14.82”
5/8” X 5”
4”
GVF12527/50U
5.59”
9.84”
8
11.63”
9.65”
3.60”
1.97”
16.03”
5/8” X 5”
5”
GVF415028/50U
5.59”
11.22”
8
13.04”
11.05”
3.60”
1.97”
17.44”
3/4” X 5”
6”
GVF420029/50U
5.59”
13.39”
12
15.23”
13.24”
3.60”
1.97”
19.63”
3/4” X 5”
8”
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 21
1 Valve Specifications
1.3
Oil Valve Selection
All of the Autoflame oil valves (types 1-9) can be supplied as spillback/bypass or metering/simplex.
There are many different oil valves available, metering and spillback valves. Each valve has different
flow characteristics as shown in this section of the manual. It is important to ensure the correct oil valve
selection for the application, otherwise the correct input and turndown available for the burner will not
be met.
When using the oil control valve in a dual fuel application (see section 1.4), i.e. gas and oil, if the
valves are to be piggy-backed, then the bottom aluminium plate of the oil valve must be removed for
assembly with the gas control valve in section 1.2.
Valve Type
1
2
3
4
5
6
8
9
Page 22
Pipe Thread
1/4” BSP (NPT)
3/8” BSP (NPT)
3/4” BSP (NPT)
3/4” BSP (NPT)
3/8” BSP (NPT)
3/8” BSP (NPT)
3/8” BSP (NPT)
3/8” BSP (NPT)
Spillback
OVS31015
OVS32016
OVS33L17
OVS34L18
OVS35019
OVS36020
OVS38022
OVS39023
Mk7 Manual: M.M. Valves and Servomotors
Metering
OVM31015
OVM32016
OVM33L17
OVM34L18
OVM35019
OVM36020
OVM38022
OVM39023
July 2014
1 Valve Specifications
1.3.1
Small Metering/ Simplex Application
The metering valves are identifiable by the prefix OVM.
Small Metering/ Simplex Oil Valve with Small Servomotor
F
A
E
H
B
G
C
D
Small Metering Oil Valve
A
B
C
D
E
F
G
H
Inches
4
1.18 3.91 4.81 3.66 2.56 2.36 1.97
mm
102 30
99
122
93
65
60
50
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 23
1 Valve Specifications
Flow: Metering/ Simplex Oil Valve
Flow (from pump)
Pressure Reading Port
1/8” BSP (NPT)
Flow (to nozzle)
Page 24
Mk7 Manual: M.M. Valves and Servomotors
July 2014
1 Valve Specifications
Exploded View: Metering/ Simplex Oil Valve
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 25
1 Valve Specifications
1.3.2
Small Spillback/Bypass Application
The spillback valves are identifiable by the prefix OVS.
Spillback/ Bypass Oil Valve
Please see section 1.3.1 for dimenisons.
Page 26
Mk7 Manual: M.M. Valves and Servomotors
July 2014
1 Valve Specifications
Flow View: Spillback/ Bypass Valve
Return (to pump)
Pressure Reading Port
1/8” BSP (NPT)
Return (from nozzle)
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 27
1 Valve Specifications
Exploded View: Spillback/ Bypass Oil Valve
Page 28
Mk7 Manual: M.M. Valves and Servomotors
July 2014
1 Valve Specifications
1.3.3
Large Metering/Simplex Application
Large Metering/ Simplex Oil Valve with Large Servomotor
A
E
D
G
B
F
C
Large Metering Oil Valve
A
B
C
D
E
G
G
Inches
5.59 1.97 6.54 4.49 3.66 4.33 2.76
mm
142
50
166 114
93
110
70
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 29
1 Valve Specifications
Flow View: Large Metering/ Simplex Oil Valve
Oil Flow (from ring main)
Oil Return (to
ring main)
Oil Flow (to nozzle)
Page 30
Mk7 Manual: M.M. Valves and Servomotors
July 2014
1 Valve Specifications
Exploded View: Large Metering/ Simplex Oil Valve
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 31
1 Valve Specifications
1.3.4
Large Spillback/ Bypass Application
Large Spillback/ Bypass Oil Valve
Please see section 1.3.4 for dimensions.
Page 32
Mk7 Manual: M.M. Valves and Servomotors
July 2014
1 Valve Specifications
Flow View: Large Spillback/ Bypass Oil Valve
Oil Return (to ring main)
Oil
Return
(to ring
main) optional
Oil Return (from nozzle)
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 33
1 Valve Specifications
Exploded View: Large Spillback/ Bypass Valve
Page 34
Mk7 Manual: M.M. Valves and Servomotors
July 2014
1 Valve Specifications
1.4
Piggy-Back Assembly
1.4.1
Gas and Oil Valve Threaded
The example shown below shows the design behind utilising one positioning motor for both the gas
and oil valve. This shows a Type 2 oil valve with a 2” threaded gas valve using only one small
positioning motor.
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 35
1 Valve Specifications
“Type 2” Oil
Control Valve
2” Threaded Gas
Control Valve
Please contact Autoflame for dimensions.
Page 36
Mk7 Manual: M.M. Valves and Servomotors
July 2014
1 Valve Specifications
1.4.2
Gas and Oil Valve Flanged
The example shown below shows the design behind utilising one positioning motor for both the gas
and oil valve. This shows a Type 2 oil valve with a PN16 flanged gas valve (3”) using only one small
positioning motor.
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 37
1 Valve Specifications
“Type 2” Oil
Control Valve
3” Flanged Gas Control Valve
Page 38
Mk7 Manual: M.M. Valves and Servomotors
July 2014
1 Valve Specifications
1.5
FGR Valves
Grease point
Part Number
FGR 410026/50
FGR 415028/50
FGR 420029/50
FGR 425030/50
FGR 430031/50
FGR 410026/50U
FGR 415028/50U
FGR 420029/50U
FGR 425030/50U
FGR 430031/50U
July 2014
Valve Type
PN16
PN16
PN16
PN16
PN16
ANSI 150lb
ANSI 150lb
ANSI 150lb
ANSI 150lb
ANSI 150lb
Valve Size
100mm/4”
150mm/4”
200mm/4”
250mm/4”
300mm/4”
100mm/4”
150mm/4”
200mm/4”
250mm/4”
300mm/4”
Mk7 Manual: M.M. Valves and Servomotors
Thickness
50mm
50mm
50mm
50mm
50mm
50mm
50mm
50mm
50mm
50m
Page 39
2 Servomotors
2
SERVOMOTORS
2.1
Small Positioning Motor
12.5mm (0.5”)
PG11 Cable Gland (1/2”
NPSM Adaptor)
64mm (2.54”)
25mm (1”)
14mm (0.55”)
M5 Clearance
Ø52mm (Ø2.05”)
25mm (1”)
92mm (3.65”)
18.5mm (0.73”)
99mm (3.93”)
26mm (1.025”)
Page 40
Mk7 Manual: M.M. Valves and Servomotors
July 2014
2 Servomotors
Note: Servomotors must only be installed and adjusted by an Autoflame certified technical engineer.
To adjust the potentiometer, loosen the tamper proof screws using a tamper proof screwdriver
available from Autoflame. Use fingers only to adjust the position of the potentiometer. After
adjustment, ensure tightness, do not over tighten. Do not raise the potentiometer from the PCB.
3
1
2
2
4
3
4
5
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 41
2 Servomotors
2.1.1
Small Servomotor Mounting Bracket and Coupling
4x 6mm holes
Ø25mm
45mm
4x 7mm holes
66mm
70mm
Page 42
Mk7 Manual: M.M. Valves and Servomotors
July 2014
2 Servomotors
2.2
Large Positioning Motor
14mm (0.55”)
32mm (1.25”)
40mm (1.57”)
91mm (3.58”)
M6 Clearance
PG11 Cable Gland (1/2”
NPSM Adaptor)
Ø68mm (Ø2.68”)
30mm (1.19”)
116mm (4.57”)
27mm (1.06”)
142mm (5.59”)
43.5mm (1.7”)
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 43
2 Servomotors
Note: Servomotors must only be installed and adjusted by an Autoflame certified technical engineer.
To adjust the potentiometer, loosen the tamper proof screws using a tamper proof screwdriver
available from Autoflame. Use fingers only to adjust the position of the potentiometer. After
adjustment, ensure tightness, do not over tighten. Do not raise the potentiometer from the PCB.
2
3
1
3
2
4
4
4
4
5
Page 44
Mk7 Manual: M.M. Valves and Servomotors
July 2014
2 Servomotors
2.2.1
Large Servomotor Mounting Bracket and Coupling
4x7mm holes
4x9mm holes
55mm
4x9mm holes
86mm
July 2014
98mm
Mk7 Manual: M.M. Valves and Servomotors
Page 45
2 Servomotors
2.3
Industrial Servomotor
2.3.1
Overview
The industrial servomotor is a rotary type electric actuator, suitable for use with the M.M. module. The
body is made with die-cast aluminium, and it is light, compact, highly efficient and powerful.
Features:
 Light and compact
 Easy to handle and suitable for use in narrow spaces
 Simple structure design
 Trouble-free mounting on air damper, maintenance and testing
 Manual operation function crank handle supplied with the servomotor
 Manual operation is only possible when the power is discontinued, with the attached manual crank
handle. If manual operation is performed whilst the unit has power, this will cause damage.
 Protect function
 Thermal protector is built in to prevent motor burnout by overloading.
 Easy for wiring
 Connection is simplified by using a terminal block inside
Page 46
Mk7 Manual: M.M. Valves and Servomotors
July 2014
2 Servomotors
2.3.2
1
External Drawings
2
3
4
6
7
5
8
Number
1
2
3
4
5
6
7
8
July 2014
Name
Body
Drive unit cover
Autoflame feedback potentiometer
Power instruments cover
Control unit/terminal strip cover
Output shaft
Manual handle shaft
Cord lock for conduit connection
Mk7 Manual: M.M. Valves and Servomotors
Page 47
2 Servomotors
2.3.3
Dimensions
H
L
B
W
T2
T1
S
A/F
R
Metric Units:
Part Number
MM10070
MM10072
MM10074
MM10078
Torque
Nm
39.2
98
126
392
Dimensions
W
H
159 111
208 137
257 145
257 145
B
115
123
157
157
Shaft Dimensions
L
A/F R
12
12
68
16.5 15
82
26.5 23
118
26.5 23
118
Mounting Detail Dimensions
S
T1
T2
60
M8
M6
70
M8
M6
84
M10
M10
84
M10
M10
Imperial Units:
Part Number
MM10070
MM10072
MM10074
MM10078
Page 48
Torque
ft lbs
29
72
144
289
Dimensions
W
H
6.26
4.37
8.19
5.39
10.12 5.71
10.12 5.71
B
4.53
4.84
6.18
6.18
Shaft Dimensions
L
A/F
R
0.47 0.47 2.68
0.65 0.59 3.23
1.04 0.91 4.65
1.04 0.91 4.65
Mk7 Manual: M.M. Valves and Servomotors
Mounting Detail Dimensions
S
T1
T2
2.36
M8
M6
2.76
M8
M6
3.31
M10
M10
3.31
M10
M10
July 2014
2 Servomotors
2.3.4
Specifications
Item
Power
Specification
220/240VAC 50/60Hz
110VAC 60 Hz
Output Shaft Torque
MM10070 - 39.2Nm (29 Lb.ft)
MM10072 - 98Nm (72 Lb.ft)
MM10074 - 196Nm (144 Lb.ft)
MM10078 - 392Nm (289 Lb.ft)
Operating Angle
Operating Time
Protect System
Ambient Temperature
0 - 90 degrees
15 - 30 seconds/ 50Hz (nominal)
Thermal protector built in
-25°C - 55°C (-13F - 131F)
Rated Current
MM10070 - 0.4A/ 200V (0.75A/ 100V)
MM10072 - 0.3A/ 200V (0.6A/ 100V)
MM10074 - 0.45A/ 200V (1A/ 100V)
MM10078 - 0.9A/ 200V (2A/ 100V)
Insulation Resistance
Withstand Voltage
Manual Operation
Stopper
Enclosure
Mounting Angle
Positioning
100Mohm/ 500VDC
1500VAC/ minute
Crank handle attached
Mechanical stopper - open/ close adjustable
IP65/ NEMA4
360 degrees - all directions
M.M drive
Drive Motor
MM10070 - 8W (E type)
MM10072 - 20W (E type)
MM10074 - 30W (E type)
MM10078 - 90W (E type)
Body material
Coating
Die cast aluminium ADC - 12
Baking varnish
Weight
MM10070 - 2Kg (4.4lbs)
MM10072 - 4.5Kg (9.9lbs)
MM10074 - 9Kg (19.8lbs)
MM10078 - 9.5Kg (20.9lbs)
Wiring Conduit
½” NPT
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 49
2 Servomotors
2.3.5
Installation
The Autoflame product must only be installed, set-up, commissioned and adjusted by an Autoflame
certified technical engineer.
Positioning:
 Ambient temperature: -25oC to +55oC (-13oF to +131oF). Avoid hazardous ambient conditions.
 Depending on the condition of the installation, reserve spaces for the wiring conduit cover must be
considered, in addition to manual maintenance works.
Mounting on Air Damper:
1. Ensure that the industrial servomotor is not powered before making manual operations.
2. Move the damper by hand and make sure that it is free. Then set it at the closed position. Make
sure that the shaft is smooth in motion and there is no decentring/ inclination, by turning the
manual handle.
3. Using the Autoflame supplied industrial servomotor mounting brackets, mount the servomotor to
the bracket and secure. Then mount this assembly to the damper or valve ensuring that the damper
or valve is in the fully closed position and then tighten the bolts and make sure that the assembly is
fully secure.
Page 50
Mk7 Manual: M.M. Valves and Servomotors
July 2014
2 Servomotors
2.3.6
Manual Operation
Before starting manual operation
check that the power source is
switched off.
Remove rubber cap of the drive unit
and insert the manual handle level
into the hexagonal hole.
Turn the manual handle clockwise
and the shaft moves in the CLOSE
direction.
Turn the manual handle counter
clockwise and the shaft moves in the
OPEN direction.
Note:
Do not over-turn the handle with excessive strengths; as otherwise, it may cause problems with the
other parts on the servomotor. Any excessive force may damage the servomotor. If power is not
removed then the servomotor will try to return to the original position during manual operation. This
may damage the servomotor and may cause physical injury.
Dimensions of Manual Handle
Opposite sides of hexagon shaft (mm) MM10070/ MM10072
MM10074/ MM10078
Length of handle (mm)
15
MM10070/ MM10072
MM10074/ MM10078
5mm
6mm
100mm
120mm
Maintenance
 Lubrication: Since the unit is sufficiently lubricated for long life, and pressure proof with di-sulfied
molybdenum grease (MOS2), no further lubrication is required.
 Periodical Test: In case the motor is very seldom rotated or after a long period of rest, it is
suggested to have a periodical test and check if there is no irregularity. Remove power to the
servomotor, and check manual operation as described above. Check wiring and visually inspect
the integrity of the valve.
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 51
2 Servomotors
2.3.7
Troubleshooting
Problem: Motor does not rotate electrically.
Probable Causes
Power is switched off
Check live supply voltage
Wire/terminals are disconnected
Replace wire or properly connect on terminals
Supply voltage is too low/high or incorrect
Check voltage with a meter
Effect of the terminal protector (due to a
high/low ambient temperature or blocked
damper)
Lower/raise the ambient temperature or manually
open/close the damper when power is removed from
the motor
No switched neutral
Remove switched neutral connection and wire link to
earth for both directions
Page 52
Mk7 Manual: M.M. Valves and Servomotors
July 2014
3 Water Level Valves
3
WATER LEVEL VALVES
3.1
Feed Water Valve
July 2014
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Parts List
Part Number
Feed water valve body
Feed water valve stand pipe
300lb flange
Internal bronze liner
Feed water valve bottom plate
Feed water valve top plate
Feed water valve bobbin
Location spacer
Unic servo extension tube
Unic servo mounting plate
Servo plate spacer
M4 x 10
M5 x 70
Bobbin shaft o-ring seal
Body o-ring seal
Material
Stainless Steel
Stainless Steel
Stainless Steel
Bronze liner
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
Steel, Mild
Aluminium-FC1
Stainless Steel
Stainless Steel
Stainless Steel
Aflas
Aflas
Item
4
12
13
14
15
Spare Kit
Part Number
Internal bronze liner
M4 x 10
M5 x 70
Bobbin shaft o-ring seal
Body o-ring seal
Material
Bronze liner
Stainless Steel
Stainless Steel
Aflas
Aflas
Mk7 Manual: M.M. Valves and Servomotors
Page 53
3 Water Level Valves
3.1.1
Feed Water Valve Specifications
Valve sizes: ½” to 2”
Servo Torque: 37ft.Ib
NEMA 4 rated
IP65 rated
Position feedback potentiometer from servomotor
Flange spec: ANSI 300Ib or PN40
The following table illustrates the pressure tests on the valves:
Nominal Size of Line
Maximum Allowable
Maximum Allowable
Test Pressure
Pressure*
Temperature
½” (15mm)
300 PSI (20 bar)
446°F (230°C)
870 PSI (60 bar)
¾” (20mm)
300 PSI (20 bar)
446°F (230°C)
870 PSI (60 bar)
1” (25mm)
300 PSI (20 bar)
446°F (230°C)
870 PSI (60 bar)
1 ½” (40mm)
300 PSI (20 bar)
446°F (230°C)
870 PSI (60 bar)
2” (50mm)
300 PSI (20 bar)
446°F (230°C)
870 PSI (60 bar)
*Please note that for the US valves with 300lb rated flanges, the maximum allowable pressure is 300
PSI. For other valves, the maximum allowable pressure is 580 PSI (40 bar).
Page 54
Mk7 Manual: M.M. Valves and Servomotors
July 2014
3 Water Level Valves
3.1.2
Sizing Calculations
Autoflame Part No. WLCV015 - ½” feed water valve water flow calculations @20°C
Water Velocity
Pressure Drop Across Valve
Water Flow Rate
Steam Flow Rate
Ft/sec M/sec
∆P PSI
∆P Bar
G/hr (imp)
GPM (imp)
US GPM
lbs/hr
Kg/hr
6
1.82
1
0.07
160
2.6
3.2
1600
727
9
2.74
2
0.14
235
3.9
4.7
2350
1068
15
4.57
5
0.34
380
6.3
7.6
3800
1727
21
6.40
10
0.68
560
9.3
11.2
5600
2545
26
7.90
15
1.03
700
11.6
14
7000
3182
32
9.73
20
1.38
820
13.6
16.4
8200
3727
Autoflame Part No. WLCV020 - ¾” feed water valve water flow calculations @20°C
Water Velocity
Pressure Drop Across Valve
Water Flow Rate
Steam Flow Rate
Ft/sec M/sec
∆P PSI
∆P Bar
G/hr (imp)
GPM (imp)
US GPM
lbs/hr
Kg/hr
8
2.43
1
0.07
460
7.7
9.2
4600
2090
12
3.65
2
0.14
665
11
13.3
6650
3022
19
5.79
5
0.34
1100
18.3
22
11000
5000
28
8.53
10
0.68
1630
27.1
32.63
16300
7409
34
10.34
15
1.03
2000
33.3
40
20000
9090
40
12.16
20
1.38
2400
40
48
24000 10909
Autoflame Part No. WLCV025 - 1” feed water valve water flow calculations @20°C
Water Velocity
Pressure Drop Across Valve
Water Flow Rate
Steam Flow Rate
Ft/sec M/sec
∆P PSI
∆P Bar
G/hr (imp)
GPM (imp)
US GPM
lbs/hr
Kg/hr
13
3.96
1
0.07
1560
26
31.2
15600
7091
21
6.4
2
0.14
2300
38.3
46
23003 10456
32
9.75
5
0.34
3800
63.3
76
38005 17275
46
14.02
10
0.68
5600
93.9
112
56007 25458
60
18.24
15
1.03
7000
116.6
140
70008 31822
70
21.28
20
1.38
8200
136.6
164
82011 37278
Autoflame Part No. WLCV040 – 1 ½” feed water valve water flow calculations @20°C
Water Velocity
Pressure Drop Across Valve
Water Flow Rate
Steam Flow Rate
Ft/sec M/sec
∆P PSI
∆P Bar
G/hr (imp) GPM (imp) US GPM
lbs/hr
Kg/hr
17
5.17
1
0.07
4700
78.3
94
47005
21366
25
7.60
2
0.14
6700
11.6
134
67007
30458
39
11.86
5
0.34
11200
186.6
224
112015 50916
60
18.24
10
0.68
16500
275
330
165022 75010
75
22.80
15
1.03
20000
333.3
400
200028 90922
90
27.36
20
1.38
24000
400
480
240033 109126
Autoflame Part No. WLCV050 - 2” feed water valve water flow calculations @20°C
Water Velocity
Pressure Drop Across Valve
Water Flow Rate
Steam Flow Rate
Ft/sec M/sec
∆P PSI
∆P Bar
G/hr (imp) GPM (imp) US GPM
lbs/hr
Kg/hr
21
6.38
1
0.07
10000
166.6
200
100014 45461
31
9.42
2
0.14
15000
250
300
150020 68191
46
13.99
5
0.34
24000
400
480
240033 109106
72
21.89
10
0.68
36000
600
720
360049 163659
85
25.84
15
1.03
44000
733
880
440061 200028
110
33.44
20
1.38
51000
850
1021
510072 231851
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 55
3 Water Level Valves
3.1.3
Flanged Feed Water Valve
C
A
D
B
Size
A
B
C
D
1”
244.5mm 9.62” 160.0mm 6.30” 160.0mm 6.30” 123.8mm 4.87”
1 ½” 252.2mm 9.93” 200.0mm 7.87” 160.0mm 6.30” 155.6mm 6.13”
2”
269.9mm 10.62” 230.0mm 9.06” 160.0mm 6.30” 164mm 6.46”
Page 56
Mk7 Manual: M.M. Valves and Servomotors
July 2014
3 Water Level Valves
Figure 3.1.3.i Flanged Feed Water Valve with Industrial Servomotor
Note: for more information on feed water valves please refer to the E.B. Set-Up Guide manual.
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 57
3 Water Level Valves
3.1.4
Threaded ½” Feed Water Valve with Small Servomotor
A
G
F
E
I
B
H
C
D
½” Threaded
A
B
C
D
E
F
G
H
I
inches
4
1.22 3.91 4.81 3.56 7.22 2.56 2.36 1.97
mm
102 31
99
122
90
183
65
60
50
Page 58
Mk7 Manual: M.M. Valves and Servomotors
July 2014
3 Water Level Valves
3.1.5
Threaded ¾” Feed Water Valve with Large Servomotor
A
F
E
D
H
B
G
C
¾” Threaded
A
B
C
D
E
F
G
H
Inches
5.59 2.00 6.54 4.37 8.86 3.58 3.54 2.36
mm
142
51
166 111 225
91
90
60
July 2014
Mk7 Manual: M.M. Valves and Servomotors
Page 59
3 Water Level Valves
3.2
Bottom Blowdown Valve
3.2.1
Valve Specifications
Power Supply: 24V DC
Flange Connection: 400lb/ PN40
Valve Sizes: 1”, 1 ½”, and 2”
Figure 3.2.1.i Bottom Blowdown Vlave with Industrial Unic 5 Servomotor
Page 60
Mk7 Manual: M.M. Valves and Servomotors
July 2014
3 Water Level Valves
3.2.2.
July 2014
Bottom Blowdown Valve Drawings
Mk7 Manual: M.M. Valves and Servomotors
Page 61
3 Water Level Valves
Flange Dimensions
A
B
C
D
E
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
1”
115
14
4
85
34.5
Quantity
1
1
1
1
2
2
1
1
1
4
1
1
1
2
2
4
4
4
2
Page 62
PN16
1.5”
150
18
4
110
49.5
2”
165
18
4
125
61.5
1”
123.825(4- 7/8”)
19.05(3/4”)
4
88.9(3-1/2”)
34.544(1.36”)
Parts List
Part Number
Bottom plate
Bobbin
Body
Liner
Stand pipe
Connection in flange
Top plate
Drive shaft
Spacer tube
Top plate pillar
Servo plate lower
Servo top plate
Locking pin
Deep groove roller bearing, double shield
Bobbin o-ring seal
ANSI B18.3.1M – M5x0.8 x 70
ANSI B18.3.1M – M4x0.7 x 12
ANSI B18.3.1M – M4x0.7 x 10
Body o-ring seal
ANSI 300lb
1.5”
155.575(6- 1/8”)
22.225(7/8”)
4
114.3(4- 1/2”)
49.53(1.95”)
2”
165(6- 1/2”)
19.05(3/4”)
4
127(5”)
61.976(2.44”)
Material/ Description
316 Stainless Steel
316 Stainless Steel
316 Stainless Steel
Bronze
316 Stainless Steel
316 Stainless Steel
316 Stainless Steel
Stainless Steel
Stainless Steel Permatube
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
Hardened Steel
Aflas
Forged Socket Head Cap Screw- Metric
Forged Socket Head Cap Screw- Metric
Forged Socket Head Cap Screw- Metric
Aflas
Mk7 Manual: M.M. Valves and Servomotors
July 2014
Autoflame Engineering Ltd
Unit1-2 Concorde Business Centre
Airport Industrial Estate, Wireless Road
Biggin Hill, Kent TN16 3YN
United Kingdom
+44 (0) 845 872 2000
www.autoflame.com