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Environmental & Combustion Controls
Pneumatic Valves

Compare Select and Compare the Product Models below.  Limited to five.  Some groupings may not be comparable.
  
VP512
Pneumatic Unit Ventilator Valve. A normally open, single seated straight through pneumatic valve used for proportional control of steam of hot water in unit ventilator applications.
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VP513
Pneumatic Water Valve. A single-seated, straight-through, pneumatic valve used for proportional control of unit air conditioners using hot and/or chilled water. Models available in Normally Open or Normally Closed.
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VP519
Two-Position, Three-Way Air Valve used to control main airflow in large Day-Nite or Summer-Winter pneumatic control systems.
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VP522
Pneumatic Sequencing Water Valve. Three-pipe, sequencing, pneumatically operated water valve for controlling both hot and cold water flow in fan-coil and induction units. Models available for mixing and diverting.
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VP525
Pneumatic radiator valve. Normally-open, single seated pneumatic radiator valve with straight through or angle body construction provides proportional control of two-pipe, hot-water or steam systems.
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VP526
Three-way Pneumatic High Pressure Water Valve provides proportional control of hot and/or cold water in unit air conditioners and fan coil systems. Models available with 5/8 in or 1/2 in (flare) pipe sizes.
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VP527
Pneumatic Water Valve. Normally open, single seated, high pressure valve provides proportional control of hot and/or cold water in unit air conditioners and fan coil units. Straight-through with 1/2 in (flare) piping.
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VP531
Pneumatic Terminal Unit Valve. Normally open, single seated valve provides proportional control of steam, hot, or cold water in terminal units. Models available in 1/2 in or 3/4 in NPT or 5/8 in or 7/8 in solder connections.
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Pneumatic Valve Accessories
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Pneumatic Valve Replacement Parts
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Compare Select and Compare the Product Models above.  Limited to five.  Some groupings may not be comparable.
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Body Pattern
AccessoryReplacement Part
Three-wayThree-way Diverting, Sequencing
Three-way MixingTwo-way
Two-way, Right AngleTwo-way, Straight-through
Two-way, Straight-through, OffsetUsed to change actuator pressure range.
Capacity (Cv)
0.63 Cv1.0 Cv
1.6 Cv10 Cv
16 Cv2 Cv
2.3 Cv2.5 Cv
2.6 Cv3 Cv
3.3 Cv4 Cv
5 Cv5.5 Cv
6.3 CvPort A: 1.5 Cv, Port B: 1.5 Cv
Port A: 2.5 Cv, Port B: 1.6 CvPort A: 2.5 Cv, Port B: 2.5 Cv
Port A: 4 Cv, Port B: 2.5 CvPort A: 4 Cv, Port B: 3.5 Cv
Capacity (Kv)
0.54 Kv0.86 Kv
1.38 Kv1.73 Kv
1.99 Kv13.7 Kv
2.16 Kv2.24 Kv
2.59 Kv2.85 Kv
3.46 Kv4.32 Kv
4.75 Kv5.44 Kv
8.57 Kv8.7 Kv
Port A: 1.3 Kv, Port B: 1.3 KvPort A: 2.2 Kv, Port B: 1.4 Kv
Port A: 2.2 Kv, Port B: 2.2 KvPort A: 3.5 Kv, Port B: 2.2 Kv
Port A: 3.5 Kv, Port B: 3.0 Kv
Spring Range (psi)
2 psi to 13 psi2 psi to 5 psi
3 psi to 10 psi3 psi to 11.5 psi
3 psi to 12 psi3 psi to 7 psi
3 psi to 8 psi6 psi to 9 psi
8 psi to 11 psi8 psi to 12 psi
9 psi to 13 psiAdjustable
Spring Range (kPa)
14 kPa to 34 kPa14 kPa to 90 kPa
21 kPa to 48 kPa21 kPa to 55 kPa
21 kPa to 69 kPa21 kPa to 79 kPa
21 kPa to 82 kPa41 kPa to 62 kPa
55 kPa to 76 kPa55 kPa to 82 kPa
62 kPa to 90 kPaAdjustable
Valve Action
Diverting/SequencingProportional Normally Closed
Proportional Normally OpenProportional Normally Open Ports B to AB
Proportional/SequencingThree-way Mixing Proportional
Two Position
Valve Type
Globe ValveUnitary
Type of End Connection
45 deg. SAE flareInlet - Internal NPT
NPTNPT- Angle Male union
NPT- StraightNPT- Straight Male Union
Outlet - External NPT UnionSolder
End Connection Size (in.)
1 1/4 in.1 1/4 in. with 1 in. port
1 in.1/2 in.
1/4 in.3/4 in.
O.D.: 1/2 in.; Nominal: 3/8 in.O.D.: 5/8 in.; Nominal: 1/2 in.
O.D.: 7/8 in.; Nominal: 3/4 in.
End Connection Size (mm)
12.7 mm19.1 mm
25 mm32 mm
32 mm with 25 mm portO.D.: 12.7 mm; Nominal: 9.5 mm
O.D.: 15.9 mm; Nominal: 12.7 mmO.D.: 22.2 mm; Nominal: 19.1 mm
Body Pressure (psi)
150 psi250 psi
Body Pressure (kPa)
1034 kPa1724 kPa
Maximum Diaphragm Pressure (psi)
25 psi29 psi
30 psi
Maximum Diaphragm Pressure (kPa)
172 kPa200 kPa
205 kPa
Dimensions (in.)
4 1/8 in. high x 3 1/8 in. wide4 7/8 in. high x 3 1/8 in. wide
4 7/8 in. high x 3 3/4 in. wide5 1/8 in. diameter x 7 11/16 high
5 1/8 in. diameter x 7 15/32 high5 3/4 in. high x 5 1/8 in. diameter
6 13/16 in. high x 5 1/8 in. dia.6 7/8 in. high x 5 1/8 in. diameter
7 7/8 in. high x 5 1/8 in. diameter8 7/16 in. high x 5 1/8 in. in. diameter
9 7/8 in. high x 5 1/8 in. diameterPipe centerline to top of actuator: 3 1/2 in. Face-to-face: 2 13/32 in.
Pipe centerline to top of actuator: 3 1/2 in. Face-to-face: 2 21/32 in.Pipe centerline to top of actuator: 3 1/2 in. Face-to-face: 2 9/32 in.
Pipe centerline to top of actuator: 3 1/2 in. Face-to-face: 3 1/32 in.
Dimensions (mm)
105 mm high x 79 mm wide124 mm high x 79 mm wide
124 mm high x 92 mm wide127 mm diameter x 190 mm high
127 mm diameter x 195 mm high146 mm high x 130 mm diameter
173 mm high x 130 mm dia.175 mm high x 130 mm diameter
200 mm high x 130 mm diameter215 mm high x 130 mm diameter
257 mm high x 130 mm diameterPipe centerline to top of actuator: 89 mm; Face-to-face: 58 mm
Pipe centerline to top of actuator: 89 mm; Face-to-face: 61 mmPipe centerline to top of actuator: 89 mm; Face-to-face: 67 mm
Pipe centerline to top of actuator: 89 mm; Face-to-face: 77 mm
Temperature Range (F)
35 F to 115 F35 F to 200 F
35 F to 250 F40 F to 240 F
40 F to 240 F (140 F max difference, alternating hot and cold water service)41 F to 240 F
For Steam: 212 F to 275 FFor Water: 115 F to 240 F
Temperature Range (C)
1 C to 93 C2 C to 121 C
2 C to 46 C4 C to 116 C
4 C to 116 C (78 K max difference, alternating hot and cold water service)5 C to 116 C
Close-off Ratings at Branch Line Pressure
110 psid (759 kPa) at 20 psi (138 kPa)110 psid (759kPa) at 20 psi (138 kPa)
12 psid at 13 psi120 psid at 18 psi
130 psid at 13 psi130 psid at 8 psi
15 psid at 13 psi150 psid (1034 kPa) at 20 psi (138 kPa)
18 psi (124 kPa) at 8 psi (55 kPa)40 psi at 13 psi
42 psid (290 kPa) at 20 psi (138 kPa)45 psid at 13 psi
45 psid at 8 psi50 psid (345 kPa) at 7 psi (48 kPa)
50 psid at 13 psi50 psid between max inlet and min outlet pressure with 2 psi at actuator
55 psid (379 kPa) at 20 psi (138 kPa)70 psid at 20 psi (with 2 to 5 psi spring)
78 psi at 13 psi79 psid (545 kPa) at 13 psi (90 kPa)
Close-off Ratings at Branch Line Pressure for Port A
14 psid at 0 psi5 psid at 0 psi
58 psid at 0 psi
Close-off Ratings at Branch Line Pressure for Port B
50 psid at 12 psi50 psid at 17 psi
50 psid at 18 psi
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