User manual

Contents

Variable Leak Valve User Manual / 87-400-085-01 (D) 5/36

Contents

Instructions for Use 7

Safety Information 9

General 10

Variable Leak Valve Outline 13

Flange Connection 14

Inlet Gas Connection 14

Use 15

To Establish a New Stop Position 16

To Set Stop Position at any Leak Rate 17

Operating at Low Leak Rates 17

Changes in Leak Rate with Variation in Room Temperature 18

Bakeout Procedure 18

To Use as a Roughing Valve 19

Adjustment of Handle Position 20

If Valve Will not Close Leak-Tight 21

Lubrication Instructions 24

Loss of Sensitivity at High Leak Rates 26

Replacement Parts 28

Accessories 30