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Two-way, Unitary, O.D. 5/8 in. 1.0 Cv


Two-way, unitary water valve with 5/8 in.O.D. and 1.0 Cv capacity

  • Product Info
  • Literature
  • Accessories & Replacement Parts


Single-seated, straight-through, pneumatic valves used for proportional control of unit air conditioners using hot and/or chilled water. Replacement devices are available for Johnson, Powers, Robertshaw, Barber-Colman, and older Honeywell devices.


  • Available in normally-open (A models) or normally-closed models (B models).
  • Straight-through pattern.
  • Rotating actuator for aligning air connection with control air piping.
  • Molded replaceable composition disc for tight shut-off.
  • Flare tube connections.
  • Small physical size.

Product Specifications

Dimensions (in.)
6 7/8 in. high x 5 1/8 in. diameter
Dimensions (mm)
175 mm high x 130 mm diameter
Temperature Range (F)
40 F to 240 F; Maximum Actuator Temperature--160 F
Temperature Range (C)
4 C to 116 C; Maximum Actuator Temperature--71 C
Operating Humidity Range (% RH)
5 to 95% RH
Connection Size (in.)
O.D.: 5/8 in.; Nominal: 1/2 in.
Connection Type
45 deg. SAE flare
Body Pattern
Two-way, Straight-through, Offset
Spring Range (psi)
9 psi to 13 psi
Spring Range (kPa)
62 kPa to 90 kPa
Air connections
1/8 in. NPT
Capacity (Cv)
1.0 Cv
Capacity (Kv)
0.86 Kv
Valve Action
Proportional Normally Closed
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
50 psid (345 kPa) at 7 psi (48 kPa)



Actuator assembly, 3 to 10 psi, 21 to 69 kPa, and 1/2 in. stroke.


Actuator Assembly, 3 to 7 psi, 21 to 48 kPa, and 1/2 in. stroke.


Actuator assembly, 8 to 12 psi, 55 to 83 kPa, and 1/2 in. stroke.