Application: Man Hours 1.5
This applies to those valves that are equipped with electric or pneumatic motors
or hydraulic drivers. The primary difference between these and other valves is
the use of motors to drive them open or closed. They are applied wherever
automatic or remote operation is essential. Motor operated valves use
diaphragms, bellows, or small electric modulating motors to operate the valve,
whereas the Hydraulic/Pneumatic/Electric valves use electric motors and gear box,
air turbines, or hydraulic pistons.
Special Instructions:
1. Schedule an outage with operating personnel if required.
2. Secure, tag, and lock out associated electric circuits,
pneumatic or hydraulic lines before servicing motor, gear box, or piston.
Items to Check & Initial Completion:
1.___ Clean unit and visually examine all parts.
2.___ Operate from limit to limit and observe. Look for binding, sluggishness,
action of limits, etc.
3.___ Determine if valve seats and holds properly.
4.___ Apply graphite to moving parts of valve.
5.___ Clean solenoids.
6.___ Inspect cylinder, piston, washers or "O" rings, controls, and switches.
7.___ Clean and adjust as necessary.
8.___ Clean up work site.
Tools and Materials:
1. Standard Tool Kit
Plus Pipe wrenches to 24"
Tubing cutters
Flaring tool
Small acetylene outfit
Packing tool kit and packing
3/4" socket set
Crescent wrenches to 14"
2. Cleaning equipment and materials. Consult the Material Safety Data Sheets
(MSDS) for hazardous ingredients and proper personal protective equipment
(PPE).
3. Lubricants. Consult the MSDS for hazardous ingredients and proper PPE.
Table of Contents | Next