文档介绍：Pneumatic Control Valves
Type 3241-1 and Type 3241-7
Type 3241-1
Type 3241-7
Fig. 1 · Type 3241 Valve with Type 3271 Actuator and with Type 3277 Actuator
Mounting and
Operating Instructions
EB 8015 EN
Edition July 2007
Contents
Contents Page
1 Design and principle of operation . . . . . . . . . . . . . . . . . . . 4
2 Assembling valve and actuator . . . . . . . . . . . . . . . . . . . . . 4
Assembly and adjustment . . . . . . . . . . . . . . . . . . . . . . . . 4
Pretensioning springs in actuator version “Actuator stem extends”. . . . . 7
Valve and actuator with different rated travels . . . . . . . . . . . . . . 8
3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Mounting position . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Signal pressure line. . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Strainer, bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Test connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5 Maintenance – Replacing parts . . . . . . . . . . . . . . . . . . . . 10