Product Description
3/8 VLV 1/2 O D FLARE PNEUOverview
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.
Product Specifications | |
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.: 1/2 in.; Nominal: 3/8 in. |
Connection Type | 45 deg. SAE flare |
Body Pattern | Three-way Mixing |
Spring Range (psi) | 3 psi to 10 psi |
Spring Range (kPa) | 21 kPa to 69 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 | 14 psid at 0 psi for Port A,50 psid at 17 psi for Port B |