Flowserve Cryogenic Ball Valves - Manual

Worcester Controls
08164-S
Cryogenic Ball Valves
Installation, Operation and Maintenance Instructions
1 /
4
" – 2" R5 AND EARLIER THREE-PIECE, BODIED EXTENDED BONNET
1 /
4
" – 2" R6 AND EARLIER C4 THREE-PIECE BODIED NON EXTENDED BONNET
3" – 6" R12 AND EARLIER ONE-PIECE BODIED EXTENDED AND NON EXTENDED BONNET
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4
" – 2" R6 AND R7 C44 THREE-PIECE BODIED NON EXTENDED BONNET
IMPORTANT: Valves intended for ammonia service must be of
stainless (not brass) material, with welded bonnet joint. The standard
bonnet joint is brazed, not welded.
CAUTION: Flowserve recommends that all products which must be
stored prior to installation be stored indoors, in an environment
suitable for human occupancy. Do not store product in areas where
exposure to relative humidity above 85%, acid or alkali fumes,
radiation above normal background, ultraviolet light, or
temperatures above 120°F or below 40°F may occur. Do not store
within 50 feet of any source of ozone.
I. INSTALLATION
A. The Worcester Cryogenic Valve is unidirectional for flow in one
direction only and therefore can only be installed in one direction.
With the valve in the closed position, install it with the relief hole
in the ball on the upstream side to ensure that cavity relief is
upstream. Note arrow stamped on the body, on a metal tag
welded to the body, or on the bonnet plate indicating flow path.
B. The Worcester Cryogenic Diverter Valve must be installed with the
bottom port on the upstream line.
IMPORTANT: DO NOT install valves with extended bonnets with
the extension tilted more than 30° from the upright vertical
position.
The extended bonnet valve is designed to maintain stem seals at
normal ambient temperature. Do not insulate the extension fully
—allow 3"–4" of tube to protrude above the insulation.
C. To install valves with welded, brazed or soldered pipe ends
(BW, SW, SWO or TE):
NOTES: Prior to welding or brazing, THOROUGHLY CLEAN ALL
JOINT SURFACES to prevent contamination.
Worcester brass valves are of leaded forging brass. Brazing
cannot be successfully accomplished unless a white flux is used.
1. Tack weld the valve in place.
2. Remove three body bolts, loosen the fourth, swing out body
with ball open. Close the ball and remove the seats, ball and
body seals. (Discard the body seals when removed from the
valve.) Note the position of the seats so that they can be
replaced in the same position as they were removed.
3. Swing body in and secure it with one additional bolt
diagonally from first.
4. Weld pipe ends. When gas welding, DO NOT play the flame
upon the valve body.
5. Allow the valve to cool and then reassemble with ball, seats
and the new body seals that are included with the valve.
6. IMPORTANT:
The fluoropolymer-coated stainless steel gaskets that are
included with the Worcester
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4
"–2" Cryogenic Valves make
excellent seals, however, some points of caution in their use
require emphasis:
a. The gaskets are NOT reusable. Upon removal from valve,
they should be discarded and replaced with new parts.
b. Avoid scratching the fluoropolymer coating of the gaskets
during installation. Light lubrication of these seals can
help to prevent damage.