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 A
LIST OF EFFECTIVE PAGES
On a revised page, the portion of text or illustrations affected by the change is indicated by a vertical line
in the outer margin of the page. When a revision is issued, the entire document is reissued with the current
revision number and date shown on all pages. For major revisions, the basic number is incremented. For
minor revisions, the number following the decimal is incremented. Dates of issue for original and subse-
quent revisions are as follows:
Revision 1.0 ...........................................10/01/2003
Revision 1.1 ...........................................10/15/2004
The total number of pages in this technical document is 18 consisting of the following:
Title, A, 1 – 16
TABLE OF CONTENTS
SUBJECT PAGE
Introduction ....................................................................... 4
Description and Operation ........................................................... 7
Installation ...................................................................... 11
Fault Isolation .................................................................... 15
LIST OF ILLUSTRATIONS
FIGURE PAGE
1. 1/2-Inch Gas Vent Valve .................................................... 8
2. Electrical Schematic Diagram ................................................ 9
3. Key Dimensions .......................................................... 13
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