Overview
Three-way pneumatic mixing valve provides proportional control of hot and/or cold water in unit air conditioners and fan coil systems. Replacement devices are available for Johnson, Powers, Robertshaw, Barber-Colman, and older Honeywell devices.
Features
Small size permits installation where space is limited.Direct-acting, rolling diaphragm actuator with integral high temperature plastic air connector for 1/4 in. (6-mm) O.D. plastic tubing.Spring loaded, self-adjusting Buna-N "V"-ring packing replaceable.Brass seats (integral lower, removable upper) and contoured plug provide metal-to-metal seating.Stainless steel stem.Linear and constant total flow throughout full plug travel.
- Dimensions (in.) : 4 7/8 in. high x 3 1/8 in. wide
- Dimensions (mm) : 124 mm high x 79 mm wide
- Temperature Range (F) : 35 F to 250 F, Maximum Safe Actuator Diaphragm Temperature--230 F
- Temperature Range (C) : 2 C to 121 C, Maximum Safe Actuator Diaphragm Temperature--110 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 : Three-way Mixing
- Spring Range (psi) : 8 psi to 11 psi
- Spring Range (kPa) : 55 kPa to 76 kPa
- Air connections : Push on for 1/4 in. O.D. plastic tubing
- Capacity (Cv) : 1.6 Cv
- Capacity (Kv) : 1.38 Kv
- Valve Action : Proportional Normally Open Ports B to AB
- Valve Type : Unitary
- Body Pressure (psi) : 250 psi
- Body Pressure (kPa) : 1724 kPa
- Maximum Diaphragm Pressure (psi) : 29 psi
- Maximum Diaphragm Pressure (kPa) : 200 kPa
- Controlled Fluid : Water
- Close-off Ratings at Branch Line Pressure : 58 psid at 0 psi for Port A,50 psid at 18 psi for Port B
