WHITTAKER CONTROLS, INC.
A MEGGITT PLC COMPANY
MAINTENANCE MANUAL
GAS VENT VALVE
C422425 • C422685 • C422695 • C422705 • C423095 • C423155
INDUSTRIAL PRODUCTS GROUP Revision 1.1 10/15/2004 Page 7
DESCRIPTION AND OPERATION
1. Description and Operation (See Figure 1)
A. Part Numbers C422425 and C422685
The Gas Vent Valve is a solenoid operated poppet shutoff valve. The valve is normally spring-
loaded to its open position. When the solenoid is energized, the solenoid plunger overcomes
the spring force to close the valve. Refer to Figure 2 for the electrical schematic diagram. Refer
to Table 2 for the characteristics and specifications.
B. Part Numbers C422695, C422705, C423095 and C423155
The Gas Vent Valve is a solenoid operated poppet shutoff valve. The valve is normally spring-
loaded to its closed position. When the solenoid is energized, the solenoid plunger overcomes
the spring force to open the valve. Refer to Figure 2 for the electrical schematic diagram. Refer
to Table 2 for the characteristics and specifications.
C. Closed Position Indicating Switch Circuit (Part Number C422425, C422695, C423095 and
C423155 Only)
The valve is equipped with a position indicating switch that is actuated by the solenoid plunger.
When the valve is in its closed position, the switch circuit is closed.
2. Detailed Specifications (Refer to Table 2)
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