Dwyer GFC User Manual
Page 19
15
4-40 SOCKET
SCREW
SPIDER SPRING
STEM
SEAT-VITON
INSERT
ORIFICE
O-RING
BLOCK
CORE
SPIRAL SPRING
COMPRESSION
SPRING
O-RING
O-RING
ADJUST. SCREW
VALVE BODY
05-19-2006
GUARD
ASSEMBLY
NUT
FIGURE 6-a SOLENOID VALVE
Various corrosive gases may demand more frequent replacement of VITON
®
O-rings and seals inside the valve. Be sure to use an elastomer material, appro-
priate for your specific gas application. Contact your distributor or Dwyer for
optional sealing materials available.
6.2.3 Valve Maintenance for GFC-110/111/113/114 Models
The solenoid valve consists of 316 and 416 stainless steel, and VITON
®
(or
optional NEOPRENE
®
or KALREZ
®
) O rings and seals. No regular maintenance
is required except for periodic cleaning.
It is advisable that at least one calibration point be checked after re-installing the
inlet fitting - see section (7).