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OM-TBV-2100 Rev.05 – 05/07
TBV cryogenic ball valves are designed and engineered to provide long lasting, trouble-free
service when used in accordance with these instructions and specifications.
INSTALLATION
1.
Valve must be installed with extended bonnet within 30° of true vertical.
2.
TBV cryogenic ball valves are unidirectional and must be installed for flow in one direction as
indicated by the flow arrow marked on the body.
3.
When installed with the flow arrow pointing downstream (opposite the side that you wish to
maintain pressure), the valve cavity will self-relieve to the upstream side.
4.
During installation it is recommended that the valve ball be in the open position in order to
prevent any possible damage to the ball.
5.
After installation, cycle valve several times before putting into service.
CAUTION FOR BRAZING, SOLDERING OR WELDING
1.
If valve is to be brazed, soldered or welded, the seats and body seals must be removed before
installation in the following manner:
a.
Rotate valve ball into open position.
b.
Remove four body bolts.
c.
Rotate valve ball back to closed position and remove seats and ball.
d.
Remove body seals from pipe ends.
e.
Place ball, seats, and body seals in a clean suitable container during installation.
f.
Reassemble end plates to body.
2.
When brazing, follow standard procedures for brazing minimizing a direct flame on the valve
body (center section).
3.
When welding, it may be desirable to wrap a damp towel around the center section.
4.
After brazing or welding, allow the valve to cool. Reassemble the seats, seals and ball with the
valve.
5.
Carefully tighten the body bolts diagonally across from each other before securing to the
following recommended torque:
VALVE SIZE
RECOMMENDED BOLT
TORQUE
1/2" – 3/4"
10-12 foot-pounds
1"
20-24 foot-pounds
1 1/2“ – 2”
30-35 foot-pounds
