Overview
Three-port relays are used in HVAC systems, to perform a variety of relay functions, such as; transmit the higher of two input signals, lock out one pressure signal when a second signal is higher, or transmit the lower of two pressure signals.
Features
Uses diaphragm-logic technology.In-line, wall, or panel mounted.Sharp-barb air connections.Molded plastic construction.
- Application : Pneumatic Three-port Selector Relay
- Dimensions (in.) : 1 1/2 in. diameter x 1 in. deep
- Dimensions (mm) : 38 mm diameter x 25 mm deep
- Maximum Safe Operating Pressure (psi) : 30 psi, maximum
- Maximum Safe Operating Pressure (kPa) : 205 kPa, maximum
- Temperature Range (F) : 0 F to 140 F
- Temperature Range (C) : -18 C to +60 C
- Mounting : Wall or In-line or panel
- Operating Humidity Range (% RH) : 5 to 95% RH
- Pressure Range (psi) : Input Operating--0 to 20 psi
- Pressure Range (kPa) : Input Operating--0 to 138 kPa
- Air connections : Barb fittings 5/32 in. (4 mm) O.D. plastic tubing
- Operation : Lockout,Lower-of-two pressures,repeater relay
