Relais et commutateurs
RP971A Ratio Relay
RP971A ratio relays are 4-port non-bleed pneumatic relays that produce a modulating pressure output proportional to pilot input changes. They are used to control pneumatic valves or damper actuators in sequence from a single thermostat.
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RP971A ratio relay are 4-port non-bleed pneumatic relays that produce a modulating pressure output proportional to pilot input changes. They are used to control pneumatic valves or damper actuators in sequence from a single thermostat.
Features & Benefits:- Adjustable pilot start point pressures
- Two pilot pressure spans available
- Four sharp barb air connections
- Molded plastic construction with neoprene diaphragms and stainless steel valve seats
- 100 mesh stainless steel screens in main and branch ports
- Designed for in-line mounting but can be wall- or panel-mounted
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