FIGURE 6-1
SOLENOID VALVE
Various corrosive gases may demand more frequent replacement of FKM
O-rings and seals inside the valve. Be sure to use an elastomer material, appro-
priate for your specific gas application. Contact OMEGA
®
for optional sealing
materials available.
Set the FMA 5400A/5500A into PURGE mode (see Figure 2-1), and attempt to
flush through with a clean, filtered, and neutral gas such as nitrogen. [Another
option for fully opening the valve is to remove the plastic cap on top of the valve,
and turning the set screw counterclockwise until it stops. See section 7.3 for valve
adjustment, to return the valve to functional use.]
17
SPIDER SPRING
STEM
SEAT-VITON
INSERT
ORIFICE
O-RING
BLOCK
CORE
SPIRAL SPRING
COMPRESSION
SPRING
O-RING
O-RING
ADJUST. SCREW
11-20-2013
NUT
GUARD
TOP
GUARD
COIL
GUARD
BASE
VALVE
BODY
4-40
SOCKET
SCREW
