Bray Triad Series - Manual (Page 6)

Installation and Maintenance Manual
Triad Series Ball Valves
Date: August 2011 / Page 6 of 7
®
A Subsidiary of BRAY INTERNATIONAL, Inc.
FLOW-TEK, Inc. Tel: 832.912.2300 © 2011 Flow-Tek, Inc.
8323 N. Eldridge Pkwy #100 Fax: 832.912.2301
Houston, Texas 77041 www.flow-tek.com
9. INSTALLATION OF THREADED VALVES
Valve can be screwed on without the use of union or
with the end caps removed from the body.
The use of a thread sealant is recommended;
Apply wrench only on the valve end being tightened.
Do not tighten by applying torque to the opposite end
cap or other valve component. Tightening by using the
valve body, handle or the opposite end cap can seriously
damage the valve; Use a wrench on both the second
end cap and pipe to avoid applying torque to the body
through the bolting.
In some applications, screwed valves may be back-weld-
ed. Disassemble as per instructions for weld end valves.
Confirm that the end cap bolt holes are aligned with the
body screw holes on both ends and that the end caps
are parallel and correctly spaced to fit the valve body
before re-assembly or back welding.
Do not use the body screws to pull the pipe ends together
or into alignment.
10. INSTALLATION OF EXTENDED WELD END
VALVE
Insure that appropriate weld procedures are implemented
that are compatible with the materials used.
Butt weld valves with 3 inch or longer extended weld
ends do not require disassembly for installation welding.
Simply ensure that ball is in the full open position, and
perform normal welding procedures, using care that the
valve body does not reach a temperature above 200F.
11. INSTALLATION OF WELD-END VALVES
(FPISP2000, FPISP3000 Series)
Insure that appropriate weld procedures are implemented
that are compatible with the materials used.
Tack weld the valve to the pipe at four points on both
end caps.
With the valve in open position, (the valve is in the open
position when the handle is parallel to the axis of the
valve and pipe), loosen all body bolts, take the body out.
Turn the handle in the half open position to assist in the
removal of the seats and body gaskets.
Turn handle in closed position and remove ball.
Place all removed parts in a clean and secure place.
Replace the body and all bolts and tighten them slightly.
This operation is very important, so that the body and
end caps remain perfectly parallel, thus preventing any
leakage at the body joint after welding.
Finish welding both end caps onto the pipe.
When cool, clean end caps, turn valve to closed posi-
tion and replace ball. Turn valve in open position and
replace seats and body gaskets.
Place body between the two end connections; then
replace all bolts and tighten firmly
(See table 1. Tightening torques for end cap screws).