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Three-pipe, sequencing, pneumatically operated water valve for controlling both hot and cold water flow in fan-coil and induction units. Replacement devices are available for Johnson, Powers, Robertshaw, Barber-Colman, and older Honeywell devices.


  • Corrosion resistant.
  • Molded-in composition discs for tight shutoff.
  • Flare connections for easy installation.
  • Operator rotates 360 degrees for convenient air piping alignment.

Product Specifications

Dimensions (in.)
9 7/8 in. high x 5 1/8 in. diameter
Dimensions (mm)
257 mm high x 130 mm diameter
Temperature Range (F)
35 F to 250 F; Maximum Actuator Temperature--160 F
Temperature Range (C)
2 C to 121 C; Maximum Actuator Temperature--71 C
Operating Humidity Range (% RH)
5 to 95% RH
Connection Size (in.)
O.D.: 7/8 in.; Nominal: 3/4 in.
Connection Type
45 deg. SAE flare
Body Pattern
Three-way Mixing
Spring Range (psi)
2 psi to 13 psi
Spring Range (kPa)
14 kPa to 90 kPa
Air connections
1/8 in. NPT
Capacity (Cv)
Port A: 4 Cv, Port B: 2.5 Cv
Capacity (Kv)
Port A: 3.5 Kv, Port B: 2.2 Kv
Valve Action
Valve Type
Body Pressure (psi)
250 psi
Body Pressure (kPa)
1724 kPa
Maximum Diaphragm Pressure (psi)
25 psi
Maximum Diaphragm Pressure (kPa)
172 kPa
Controlled Fluid
Close-off Ratings at Branch Line Pressure
45 psid at 13 psi
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