Install Instructions

SP470A AND B PNEUMATIC SWITCHES
Application
SP470
Fig. 9 shows a typical application for sequential
switching. In Position 1, the actuator exhausts through
Port 9 and the valve opens. In Position 2, the switch
connects the actuator to the direct-acting controller and
the valve is in the automatic mode. In Position 3, the
switch connects the actuator to main air and the valve
closes.
M
M
BM
N.O. VALVE
7
9 8
6
EXH
DA
CONTROLLER
NOTES:
POSITION 1, VALVES OPEN: PORTS 7 AND 9 CONNECTED,
PORTS 6 AND 8 BLOCKED
POSITION 2, VALVE AUTO: PORTS 7 AND 8 CONNECTED,
PORTS 6 AND 9 BLOCKED
POSITION 3, VALVE CLOSED: PORTS 7 AND 6 CONNECTED,
PORTS 8 AND 9 BLOCKED
C4290
Fig. 9. Typical three-position application.
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
95-7236EF J.H. Rev. 2-02
paper containing at least 10%
customer.honeywell.com
post-consumer paper fibers.