AMOT 02GGH, Installation, Operation And Maintenance Manual

Page: 15 / 84

15
Valve Body
OMMGGP00185 Rev 5 – MAY 2019
Section 3
Valve Body
Contents
Para Page
3.1 Description ............................................................................... 15
3.2 Installation ............................................................................... 15
3.3 Operation ................................................................................. 15
3.4 Maintenance ............................................................................. 16
3.4.1 Dismantle and Assemble .................................................. 16
3.4.2 Recommended Spares ..................................................... 19
3.1 Description
The G Valve is a compact and rugged 3-way control valve designed for
temperature control using ‘diverting’ or ‘mixing’ techniques.
3.2 Installation
Refer to Section 10 (System Integration) for valve installation details.
3.3 Operation
CAUTION
Damage can be caused to the valve assembly if an extension bar is
used on the handwheel. Do not use any mechanical aid to turn the
handwheel.
Under normal conditions, the valve is operated pneumatically by the actuator.
Manual operation is possible at any time by using the geared manual override
(if fitted).
If the valve fails to operate correctly, refer to the troubleshooting guide in
Section 11.