Relays
54 customer.honeywell.com 70-6925
RP471 Snap-Acting Pneumatic Relay
The four port, snap acting relay converts a proportional air
pressure change from a controller to a positive (two-position)
pressure change. It can also divert a supply line to one of two
branches. Replacement device is available for Johnson, Powers,
Robertshaw, Barber-Colman, and older Honeywell devices.
• Manually adjustable switching pressure.
• Sharp barb connections for 5/32 inch (4 mm) O.D. plastic tubing.
• Molded plastic construction with neoprene diaphragms and
stainless steel lever.
• Mounts in any position with mounting clip.
RP471A Typical Piping
Type: Pneumatic, four-port, snap acting relay
Dimensions, Approximate: 1 1/2 in. diameter x 2 3/4 in. deep
(38 mm diameter x 70 mm deep)
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)
Mounting: Wall or Panel
Operating Humidity Range (% RH): 5 to 95% RH
Temperature Range: 0 F to 140 F (-18 C to +60 C)
Maximum Safe Operating Pressure: 30 psi (205 kPa)
Nominal Switch Differential: 0.5 psi (3 kPa)
M
MB
OUTDOOR AIR
THERMOSTAT
3
6
8
7
M
RP471A
N.O.
HEATING
VALVE
PERIMETER
HEAT
TO
MIXING
BOXES
M
DA SPACE
THERMOSTAT
C4486
Product Number Operation
Differential Pressure
Range Setpoint Range
Description Includes(psi) (kPa) (psi) (kPa)
RP471A1002 Proportional to 2-
position converter
1 psi
maximum
7 kPa
maximum
Adjustable
between 3 to
15 psi
Adjustable
between 21 to
103 kPa
Wall or Panel Mounted
Pneumatic, four-port,
snap acting relay, SPDT
14003030-001, 1 1/2 in.
Mounting Clip for Mounting
relay to wall or panel
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