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.
Product Specifications
- 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
- Includes
- 14003030-001, 1 1/2 in. Mounting Clip for Mounting relay to wall or panel
- 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
- Capacity
- 0.039 scfm at 1 psi differential (18 mL/s at 5 kPa differential)
- Operation
- Lockout,Lower-of-two pressures,repeater relay
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