Submittal Sheet

RP971A Ratio Relay

77-9849

SPECIFICATION DATA

GENERAL

The RP971A Ratio Relay is a four port nonbleed pneumatic

relay which produces a modulating pressure output

proportional to pilot input changes. It is used to control

pneumatic valve or damper actuators in sequence from a

single thermostat.

FEATURES

• 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

PAGE 1
RP971A Ratio Relay SPECIFICATION DATA FEATURES • • • • • • 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 GENERAL The RP971A Ratio Relay is a four port nonbleed pneumatic relay which produces a modulating pressure output proportional to pilot i
PAGE 2
RP971A RATIO RELAY DESCRIPTION The RP971A Ratio Relay is a four port nonbleed pneumatic relay which produces a modulating pressure output proportional to pilot input changes. It is used to control pneumatic valve or damper actuators in sequence from a single thermostat. Air Consumption: 0.002 scfm (0.