AMES 672GD-19 Installatie-, Bedienings- en Onderhoudshandleiding - Pagina 7

Blader online of download pdf Installatie-, Bedienings- en Onderhoudshandleiding voor {categorie_naam} AMES 672GD-19. AMES 672GD-19 12 pagina's.

Valve Disassembly Instructions

Before undertaking valve disassembly, it is recommended to gather the following tools to aid you during the process:

• Small & large adjustable wrenches

• Screwdriver set

• Machinist fine metal file

• Fine wire brush

• Bench vise

• Basic valve IO&M manual

• Hammer & dull cold chisel

• Heavy-duty ratchet & socket set

• Hexagonal wrench set

• 320 grit/fine Emery cloth

• Appropriate technical bulletins for

valve start-up procedures.

1. Isolate the valve from line pressure and depressurize it to ensure safe working conditions. Disconnect any electrical

connections if so equipped.

2. Carefully remove Position Indicator or Limit Switches if equipped. Remove all tubing, fittings, and Control Pilots

necessary to easily access and remove the cover. Remove cover nuts and washers.

3. Remove the cover. If cover is not free to be removed, loosen it by tapping upward along its outside edge with a dull cold chisel, pic-

tured above.

a. Large valves may require the installation of lifting "eye" bolts in order to facilitate cover removal; installation ports are provided on

the cover for this purpose.

4. Remove the Disc and Diaphragm Assembly from the valve body by lifting straight up.

a. Large diameter valves may require a lifting "eye" bolt to be installed in the valve stem accessory threads located on the very

top of the valve stem.

5. Before removing Stem Nut, examine stem threads for mineral build-up. Remove deposits with a fine wire brush. Extreme care should

be taken not to damage the finish on stem guiding surfaces when disassembling. Avoid applying pipe wrenches to top or bottom

stem guide surfaces.

IOM-A-ACV-972-19_672-19 2115

EDP# 1917110

VALVE COVER

BRASS BAR STOCK

(ANGLE UPWARD)

HAMMER