1. No category

The Pivotrol® Pump Patented
Selection and Sizing
How to Select and Size
Capacity lb/h When installed with recommended filling head above
top of pump.
Non-Electric
Pumps
Condensate
Recovery
From the inlet pressure, back pressure and filling head conditions given
below, select the pump size and check valve package which meets the
capacity requirement of the application.
Specify pump body, type PTC or PTF. Select optional extras as required.
For GPM, multiply the capacities below by 0.002.
For kg/h, multiply the capacities below by 0.454.
For liquid specific gravities from 0.9 to 0.65, consult Spirax Sarco.
* Back pressure is the lift height (H) in feet x 0.433 plus psig in return line,
plus downstream piping friction pressure drop in psig calculated based
on the maximum instantaneous discharge rate of te respective pump
selected. (See TIS Sheets)
Note: To achieve rated capacity, pump must be installed with check
valves supplied by Spirax Sarco. Use of a substitute check valve may
effect the performance of the pump.
Condensate load7000 lb/h
Steam pressure available for operating pump
80 psig
Vertical lift from pump to the return piping
30 feet
Pressure in the return piping (piping friction negligible
25 psig
Filling head on the pump available
12 inches
Solution:
1.Calculate "H", the totallift or back pressure, against which the condensate must be pumped. = (30 x 0.433) + 25=38 psig
2.From capacity table, with 80 psig inlet pressure and 40 psig back pressure, choose a 2" x 2" pump with stainless steel check valves, which ha a capacity of 6,935 lb/h.
Note from capacity multiplying factor charts:
A. Pump capacity if filling head is 24": 1.16 x 6,935 = 8045 lb/h
B. Pump capacity using compressed air: 1.12 x 6,935 = 7767 lb/h
(% back pressure is 38—75=50%)
Motive Steam
or Gas Supply
Vent to atmosphere
Condensate
Return
Pump
Exhaust
At least
12" Seal
on overflow
Vented
Receiver
(open system)
Filling
Head
Filling
Height
Pressure
Powered
Pump
TD 42L or 52L Trap
when steam supply is used
Local regulation may restrict the use of this product below the conditions quoted. Limiting conditions refer to standard connections only.
In the interests of development and improvement of the product, we reserve the right to change the specification.
3:274
Condensate
Return
Line
Recommended
Installation
The pump is fitted with
vented receiver or an inlet
reservoir.
Details of the application
will determine whether a
vented receiver or an inlet
reservoir will be needed
to accomplish this.
TI-5-030-US
4.13
The Pivotrol® Pump
Patented
Selection and Sizing
Vented Receiver (Open System)
Inlet Reservoir Piping (Closed System)
To drain condensate from a single or multiple source an "open" system, a vented
receiver should be installed in a horizontal plane above and ahead of the pump.
Sufficient receiver volume is needed above the filling head level to accept the
condensate reachng the receiver during the pump discharge stroke. More
important, the receiver must be sized to allow sufficient area for complete flash
steam separation from the condensate. The chart below shows proper vented
receiver sizing (per criteria set forth in the A.S.H.R.A.E. Handbook) based on the
amount of flash steam present. If the receiver is sized as shown below, there will
be sufficient volume for condensate storage and sufficient area for flash steam
separation. The receiver can be a length of large diameter pipe or a tank.
To drain condensate from a single piece of equipment in a "closed"
system, a reservoir should be installed in a horizontal plane above and
ahead of the pump. Sufficient reservoir volume is needed above the
filling head level to accept the condensate reaching the reservoir during
the pump discharge stroke. The chart below shows minimum reservoir sizing, based on condensate load, needed to prevent equipment
flooding during the pump dischare stroke. The reservoir can be a length
of large diameter pipe or a tank.
Pump size - up to 3"x 2"
Pump size - up to 3"x 2"
Vent Line
Diameter
1-1/2"
2"
3"
4"
6"
6"
8"
Pump Size – PTF4
Flash Steam
up to –
1000 lb/h
2000 lb/h
3000 lb/h
4000 lb/h
5000 lb/h
6000 lb/h
7000 lb/h
8000 lb/h
Pipe Size
Diameter
Length
16"
60"
20"
60"
24"
60"
26’’
60"
28"
60"
30"
72"
32"
72"
36"
72"
Vent Line
Diameter
6"
8"
8"
10"
10"
12"
12"
14"
Capacity Multiplying Factors for other Filling Heads
Filling Head
Inches
mm
Check valve and piping size, pump type
2" x 2"
3" x 2"
PTF-HP PTF4
PTC/PTF PTC/PTF
-3.0
-76
0.47
-1.0
-25
0.66
0.0
0
0.76
6.0 1520.90
12.0
3051.00
18.0
4571.08
24.0
6101.16
36.0
9141.38
48.0 1219
1.48
60.0 1524 N/A
NA
0.40
0.43
0.69
1.00
1.02
1.04
1.17
1.25
N/A
NA
0.23
NA
0.41
0.60.70
0.90.89
1.00.95
1.10.98
1.21.00
1.31.00
1.41.08
1.51.20
Liquid
Reservoir Pipe Size
lb/h
3" 4" 6" 8" 10"
500 or Less
2’
1000
2’
1500
3’ 2’
2000
3.5’ 2’ 1’
3000
3’ 2’
4000
4’ 2’ 1’
5000
6’ 3’ 2’
6000
3’ 2’
7000
3’ 2’
8000
4’ 2’
9000 4.5’ 3’ 2’
10,000
5’ 3’
2’
11,000
5’ 3’
2’
Condensate
Recovery
Flash Steam
Pipe Size
up to —
Diameter
Length
75 lb/h
4"
36"
150 lb/h
6"
36"
300 lb/h
8"
36"
600 lb/h
10"
36"
900 lb/h
12"
36"
1200 lb/h
16"
36"
2000 lb/h
20"
36"
Pump Size – PTF4
Non-Electric
Pumps
Liquid Load
Reservoir Pipe Size*
lb/h 12"16"20"24"
10,000
5’
3’
2’
20,000
10’
7’
4’
30,000
9’
6’
4’
40,000
12’
7.5’
6’
50,000
9’
6’
60,000
9’
6’
* When BP/MP is less than 50%, these reservoir lengths can be reduced by 1/2.
Capacity Multiplying Factors for Motive Gas Supply
(other than steam)
2" and 3" x 2" PTC / PTF
% Back Pressure
10%20%30%40%50%60%70%80%90% VS. Motive Pressure
(bp / MP)
Capacity
Multiplying
1.041.061.081.101.121.151.181.231.28
Factors
PTF-HP
1.191.431.431.531.852.042.142.202.44
PTF4
1.191.431.431.531.852.042.142.202.44
Local regulation may restrict the use of this product below the conditions quoted. Limiting conditions refer to standard connections only.
In the interests of development and improvement of the product, we reserve the right to change the specification.
Capacity
Multiplying
Factors
Capacity
Multiplying
Factors
TI-5-030-US
4.13
3:275
The Pivotrol® Pump
Patented
Selection and Sizing
Non-Electric
Pumps
Condensate
Recovery
Back
Motive
3" x 2"
3" x 2" PTC/PTF
2" x 2"
Motive
Pressure Pressure
PTF-HTF
3" x 3" PPF Top
PTC/PTF
Pressure
psig
psig
12" Filling Head lb/hr 12" Filling Head lb/hr 12" Filling Head lb/hr
psig
200 180
200 160
200 140
200 120
200 100
200 80
200 60
200 50
200 40
200 30
200 20
200 10
180
160 180 140
180 120
180 100
180 80
180 60
180 50
180 40
180 30
180 20
180 10
160 140
160 120
160 100
160 80
160 60
160 50
160 40
160 30
160 20
160 10
140 120
140 100
140 80
140 60
140 50
140 40
140 30
140 20
140 10
120 100
120 80
120 60
120 50
120 40
120 30
120 20
120 10
100 80
100 60
100 50
100 40
100 30
100 20
100 10
80 60
80 50
80 40
80 30
80 20
80 10
60 50
60 40
60 30
60 20
60 10
50 40
50 30
50 20
50 10
40 30
40 20
40 10
30 20
30 15
30 10
20 15
20 10
15 10
-
-
6375
7375
8250
9000
9685
10000
10310
10635
10950
11195
-
5425
6685
7760
8600
9450
9830
10230
10560
10895
11195
4250
5750
7040
8065
9105
9565
9990
10440
10870
11195
4625
6120
7420
8625
9190
9690
10245
10760
11195
4700
6475
7845
8530
9240
9865
10535
11065
4995
6620
7500
8370
9145
9900
10630
5010
6000
6935
7970
8870
10000
4250
5315
6360
7460
9190
4440
5625
6730
8690
4630
5850
7930
4810
5475
6820
4375
5210
4375
-
5250
7375
9440
11145
12565
14260
14875
15690
16310
17000
17640
3750
6335
8555
10375
11980
13625
14375
15150
15875
16665
17505
4860
7500
9375
11135
12940
13750
14565
15400
16270
17315
6085
8145
10065
12120
13000
13940
14875
15840
17045
6300
8625
10970
12100
13160
14250
15280
16655
6260
9255
10680
12040
13310
14460
16100
6485
8435
10185
11750
13250
15190
5000
7485
9625
11580
13750
5500
8125
10315
12755
5750
8700
11470
5810
8000
9690
5375
7450
6000
3518
4941
6325
7467
8419
9554
9966
10512
10928
11390
11819
2513
4244
5732
6951
8027
9129
9631
10151
10636
11166
11728
3256
5025
6281
7460
8670
9213
9759
10318
10901
11601
4077
5457
6744
8120
8710
9340
9966
10613
11420
4221
5779
7350
8107
8817
9548
10238
11159
4194
6201
7156
8067
8918
9688
10787
4345
5651
6824
7873
8878
10177
3350
5015
6449
7759
9213
3685
5444
6911
8546
3853
5829
7685
3893
5360
6492
3601
4925
4020
Back
Pressure
psig
300200
300185
300160
300140
300120
300100
30080
30060
30040
30020
30010
280200
280180
280160
280140
280120
280100
28080
28060
28040
28020
28010
250200
250180
250160
250140
250120
250100
25080
25060
25040
25020
25010
200180
200160
200140
200120
200100
20080
20060
20040
20020
20010
150120
150100
15080
15060
15040
15020
15010
125100
12580
12560
12540
12520
12510
10080
10060
10040
10020
10010
75
60
75
40
75
20
75
10
50
40
50
20
50
10
25
20
25
10
Local regulation may restrict the use of this product below the conditions quoted. Limiting conditions refer to standard connections only.
In the interests of development and improvement of the product, we reserve the right to change the specification.
3:276
3" x 2"
PTF-HP
12" Filling Head lb/hr
12550
13875
14565
15750
17125
19125
20315
22065
24375
27500
28750
11125
12435
13250
14435
16875
17875
19125
20850
23125
26125
27565
9190
10185
11000
12190
13935
15935
17065
19000
21200
24125
25700
6065
7190
8315
11935
12500
14065
15825
18125
20815
22315
7875
8875
10750
12625
14935
17375
19000
7065
9065
10875
13250
15500
16685
7245
9125
11435
13810
15375
7035
9435
12125
13565
5085
10185
11625
2750
9685
TI-5-030-US
4.13
The Pivotrol® Pump
Patented
Selection and Sizing
150
140
120
100
80
60
50
40
30
20
15
120
100
60
50
40
30
20
15
120
100
80
60
50
40
30
20
15
100
80
60
50
40
30
20
15
80
60
50
40
30
20
15
60
50
40
30
20
15
60
50
40
30
20
15
50
40
30
25
20
15
40
30
25
20
15
30
25
20
15
30
25
20
15
20
15
36” Fill Head
(70” Fill Height)
lb/hr
22120
22970
24870
27110
29860
33400
35640
38390
41930
46920
50460
23700
26020
32500
34810
37640
41300
46440
50090
22530
24920
27830
31590
33980
36890
40660
45960
49720
23410
26220
29850
32150
34960
38590
43710
47340
24610
28110
30320
33030
36530
41460
44950
24730
27100
30010
33750
39030
42780
21350
23880
26980
30970
36610
40600
21850
24830
28680
31120
34110
37960
22940
26840
29310
32330
36230
25310
27970
30910
34160
19480
22230
25600
29940
20440
25650
To size the PTF4 in a closed system:
Establish available motive pressure.
Establish static back pressure on Pump/Trap combination.
Place established pressures in formula below:
• Pump Motive Pressure (psig) – min. VAV delta P (psig) > Back Pressure (psig)
• Capacity charts to be read as normal, i.e. at pump motive and back pressure.
• If, Pump Motive Pressure (psig) – min. VAV delta P (psig) < Back Pressure (psig), then
isolate or remove VAV and multiply capacity by 0.77 to find reduced capacity without VAV.
Sizing Example: 1
A closed system has the following conditions:
Motive steam available = 150 psig. Static Back Pressure = 45 psig.
Open System.
PTF4
Capacity charts show capacity at 150 psig motive with 45 psig back pressure.
Closed System.
The Vent Assist Valve on the PTF4 requires at least 75 psig differential
pressure to operate in a closed system.
Condensate
Recovery
200
200
200
200
200
200
200
200
200
200
200
180
180
180
180
180
180
180
180
160
160
160
160
160
160
160
160
160
140
140
140
140
140
140
140
140
120
120
120
120
120
120
120
100
100
100
100
100
100
80
80
80
80
80
80
70
70
70
70
70
70
60
60
60
60
60
50
50
50
50
40
40
40
40
30
30
Back
Pressure
psig
To size the PTF4 pump:
Pump Motive Pressure – min. VAV delta P > Back Pressure.
150 psig – 75 psig > 45 psig
As the motive pressure is 150 psig and the VAV requires a minimum 120 psig to operate
(75 + 45 = 120), this combination is sized correctly.
Local regulation may restrict the use of this product below the conditions quoted. Limiting conditions refer to standard connections only.
In the interests of development and improvement of the product, we reserve the right to change the specification.
Non-Electric
Pumps
Motive
Pressure
psig
TI-5-030-US
4.13
3:277
The Pivotrol® Pump
Capacity Charts
Selection and Sizing
Patented
2" x 2" Pivotrol® Pump
0
0
B a ck
P ress
ure (
23ft
IG B
)
a ck
30 P
P re
S IG
s
s
ure
B ac
40
(4 6
PS
kP
IG
ft)
re s
B ac
su r
50 P
e (6
kP
S IG
9ft)
res
Ba
su r
ck
60 P
e
P
(92
S IG
re s
ft)
sur
B ac
e (1
kP
16
res
ft)
sur
80 P
e(
1 39
S IG
ft)
Ba
ck
P re
100
ssu
PS
re
IG
( 18
Ba
5ft
ck
)
P re
120
s
s
PS
u re
IG
(23
Ba
1f
ck
t)
P
140
r
e
PS
s
su
IG
re
Ba
(27
ck
7f
Pr
t
es
su
re
( 32
3f
t)
20
20 P S
30
40
50
60
70
80
Motive Pressure PSIG
10
90
100
110
120
130
140
150
160
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
)
170
180
10500
11000
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
(22)
11500
10000
(13)
12000
9500
(11) (12)
9000
(10)
8500
(9)
8000
(8)
7500
(7)
6500
(6)
7000
(5)
6000
(4)
5000
(3)
5500
(2)
4500
3000
(1)
3500
2500
200
2000
200
1500
190
1000
190
500
Non-Electric
Pumps
180
4000
Condensate
Recovery
170
Motive Pressure PSIG
10 P S IG
10
lb/hr
(23)
(24)
(GPM)
3" x 2" Pivotrol® Pump
0
0
10
10
40
50
60
Motive Pressure PSI
G
70
80
90
100
110
120
130
140
150
160
20
30
40
50
60
70
80
90
100
110
120
130
G
30
10 P S IG
B a ck P
re ssur
20 P S IG
e (23ft
B a ck P
)
re ssur
30 P S IG B
e (46ft
ack P re
)
ssure (6
9ft)
40 P S IG
B a ck P
re ssure
50 P S IG
(92ft)
B a ck
P re ss
60 P S IG
u
r
e
(116f
B a ck P
t)
re ssu
re (13
9ft)
80 P S
IG B a
ck P r
e s su
re (1
85ft)
100 P
S IG
B ac
k Pr
e ss
ure
120
(23
PS
1 ft)
IG B
ack
P re
140 P S
ss u
IG B
re
ack
(27
P re
7f
s
6
1 0P
s
u
S IG
re
B ac
(32
kP
3f
res
t)
sur
e (3
70
ft)
Motive Pressure PSI
20
140
150
160
(26)
(27)
(28)
(29) (30)
17500
(25)
17000
(24)
16500
(23)
15500
(22)
16000
(21)
15000
(20)
14500
(19)
14000
(18)
13500
(17)
13000
(16)
12500
10000
(15)
11500
9500
(14)
12000
9000
(13)
10500
8500
(11) (12)
11000
8000
200
7500
(9) (10)
190
7000
(8)
180
6500
(7)
170
6000
(6)
5500
4500
(5)
5000
4000
(4)
3500
200
2500
190
3000
180
2000
t)
170
(31)
(32)
(33)
(33)
(34)
Local regulation may restrict the use of this product below the conditions quoted. Limiting conditions refer to standard connections only.
In the interests of development and improvement of the product, we reserve the right to change the specification.
3:278
lb/hr
(GPM)
TI-5-030-US
4.13
The Pivotrol® Pump
Patented
Selection and Sizing
PTF4 Capacity Chart
0
20
40
80
100
120
140
Condensate
Recovery
160
180
Non-Electric
Pumps
52,000
50,000
48,000
46,000
44,000
42,000
40,000
38,000
36,000
34,000
32,000
30,000
28,000
26,000
24,000
22,000
20,000
18,000
16,000
200
14,000
Motive Pressure PSIG
60
Capacity, lbs/hr
Local regulation may restrict the use of this product below the conditions quoted. Limiting conditions refer to standard connections only.
In the interests of development and improvement of the product, we reserve the right to change the specification.
TI-5-030-US
4.13
3:279
The Pivotrol® Pump
Selection and Sizing
Patented
3" x 2" PTF-HP Pivotrol® Pump
0
20
20 P
40 PS
IG B
SIG
B
SIG
260
280
2
4,000
6.000
8,000
(2) (4)
(8)
(12)
(16)
10,000
1,000
2,000
300
ft)
(20) (24)
30,000
240
28,000
220
26,000
200
24,000
180
22,000
160
20,000
140
18,000
120
16,000
100
ack
14,000
80
Condensate
Recovery
B
ac
ack
kP
Pr
re
es
Pre
ss
s
60
ss u
ur
ur
e(
PS
re
e(
46
IG
(92
23
f
Ba
t
80
ft)
)
ft)
ck
PS
Pr
IG
e
s
Ba
10
su
0P
ck
re
Pr
SI
(1
G
e
39
ss
12 B
ft)
ac
ur
0
e
PS k P
(1
re
IG
85
s
ft
Ba sur
e( )
ck
2
P
1
3
1
18 60
re
1ft
40
0P P
ss
)
PS
SIG SI
ur
IG
e
Ba G B
Ba
(2
ck ac
77
ck
Pr k P
es r
f t)
P
s
20 ure essu ress
0
(
PS 416 re (3 ure
IG ft) 70 (32
3ft
ft)
(4
6
)
60
12,000
MOTIVE PRESSURE (PSIG)
40
10
P
(lb/hr)
(28)
(32)
(36)
(40)
(44)
(48)
(52)
(56)
(60)
(GPM)
CAPACITY
Non-Electric
Pumps
Pivotrol® Steam Consumption Chart
•
•
PTF4 without insulation
• insulation
PTF - HP without
PTC / PTF without insulation
PTC / PTF with insulation
PTF4 with insulation
PTF - HP with insulation
14
•
13
Steam used per 1000lbs water
12
11
•
10
9
•
8
7
•
6
•
5
•
4
•
3
2
•
•
•
•
•
1
0
0
10
20
30
40
50
60
70
80
90
100
110
120
130 140
150
160
170
180
190
200
Back Pressure (psig)
TI-5-030-US
3:280
4.13
Patented
Selection and Sizing
TI-5-030-US
Spirax Sarco, Inc., 1150 Northpoint Blvd, Blythewood, SC 29016
4.13
© Spirax Sarco, Inc. 2013
Non-Electric
Pumps
Condensate
Recovery
The Pivotrol® Pump
Telephone: (803) 714-2000 FAX (803) 714-2222
3:281