VELAN EE-1000 Maintenance Manual

EE-1000 MEMORY SEAL BALL VALVES
MAINTENANCE MANUAL
End-Entry, Threaded, Full Port
IV GENERAL MAINTENANCE
Normal maintenance consists of tightening the gland nut as necessary. However, it should not be
tightened excessively because it will result in high torque and high packing wear or packing damage.
It is recommended to relieve the system pressure if possible. Periodically observe the valve to be sure of
proper performance. More frequent observation is recommended under extreme conditions.
VEL-BVEE-97
1
/
4
I INTRODUCTION
These rugged and universal purpose valves are suited for many
fluids, in industrial, commercial and original equipment applica-
tions. Well-suited for steam service to 150 psi. Fire safe, ideal for
fuel lines, LP gas and a variety of petroleum and petrochemical
processes. Also available for oxygen, chlorine, high vacuum and
hydrogen peroxide services.
II PREPARATION AND INSTALLATION
1. Before installing a new valve in the line, make sure the seats and
seals are suited for the intended service.
2. This ball valve is designed for bi-directional flow, unless the ball
is drilled for cavity relief.
3. Valve must be installed with sufficient Teflon tape (or similar
suitable sealant) to ensure proper installation.
III WARNING
For safety reasons, it is important to take these precautions before
you start to work on the valve.
1. Personnel making any adjustments on the valves should wear
equipment normally used to work with the process where the
valve is installed.
2. Line and valve must be depressurized by shutting off the valves
and the bleed line, then cycling the valve once and leaving it half
open to relieve the pressure from the ball cavity.
3. When installing or removing the valve from the piping system,
place a wrench on the body end nearest to the end being worked
on. Make certain body end does not turn out of the valve body.
–2", Stainless Steel
Maintenance
Manuals