Install Instructions

RP470A AND B PNEUMATIC SELECTOR RELAYS
Port 5 blocks Port 3 until the signal at Port 2 builds up a
matching pressure, thus maintaining Port 3 equal to Port
5. Port 3 acts as an exhaust port.
INPUT 1
0.005 IN. OR 0.007 IN.
(0.013 OR 0.018 MM)
RESTRICTOR
M
RP470B
2
5
3
EXH
OUTPUT
C4490-1
Fig. 8. RP470B piped as a repeater.
Fig. 9 shows the RP470B in a lowest-of-several-
pressures application. In this application, the RP470B
acts as a repeater, but repeat only the lowest input
pressure.
NOTE: All inputs are isolated and a restricted main is
required.
INPUT 1 INPUT 2 INPUT X
2
5
3
EXH
RESTRICTOR
RP470B
2
5
3
EXH
RP470B
2
5
3
EXH
RP470B
M
OUTPUT
C4489
Fig. 9. RP470B piped for lowest-of-several-pressures
selection.
Fig. 10 shows the RP470B piped for the lowest-of-two-
pressures selection with a capacity-type device input.
INPUT 1
RP470B
RESTRICTOR
EXH
CAPACITY-TYPE
DEVICE INPUT
2
5
3
OUTPUT
C4488
Fig. 10. RP470B piped for lowest-of-two-pressures
selection with capacity-type device input.
Fig. 11 shows the RP470B piped for a lowest-of-two
pressures selection with a one pipe, bleed-type device
input.
INPUT 1
BLEED-TYPE
ONE-PIPE
DEVICE INPUT
RP470B
2
5
3
RESTRICTOR
EXH
M
OUTPUT
C4487
Fig. 11. RP470B piped for lowest-of-two-pressures
selection with a one-pipe, bleed-type device input.
Automation and Control Solutions
Honeywell Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MN 55422 Scarborough, Ontario
M1V 4Z9
Printed in U.S.A. on recycled
95-7231EF J.H. Rev. 2-02 customer.honeywell.com
paper containing at least 10%
post-consumer paper fibers.