Bray Flow-Tek Triad Series - 8.6 Installation of Weld-end (Non-Extended) Valves

TRIAD SERIES 3-PIECE BALL VALVE
Installation, Operation, and Maintenance Manual
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Follow the appropriate welding procedures per the applicable
industry standards that are compatible with the valve and piping
materials being joined While welding monitor the valve body
temperature near the seat pockets using a temperature indicator
stick ensuring that the temperature does not exceed C
(F)
After welding follow the appropriate post weld heat treatment
(PWHT) procedures per the applicable standards PWHT shall
be performed localized To avoid excessive body temperatures
perform PWHT to one end of the valve and then normalize to
ambient temperature before proceeding to the second end of the
valve
After installation with the valve still in the open position flush
the piping system and valve clean again to remove any dirt burrs
and welding residue that may have accumulated during valve
installation
After installation and flushing of the piping system verify smooth
operation by cycling the valve several times
 Installation of Weld-end (Non-Extended) Valves
NOTICE
Ensure that appropriate weld procedures are implemented that
are compatible with the materials used
 Ensure that the piping and valve end connections are
properly aligned to avoid line bind
 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 remove the body from
between the end caps
 Turn the handle in the half open position to assist in the
removal of the seats and inner 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 body bolts and tighten them hand
tight 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
 Apply a welding ground strap adjacent to the valve end being
welded to prevent current flow through the valve