Flowserve R6 Installation, Operation And Maintenance Instructions

Visit www.boighill.com to request a quote.
Worcester Controls
Cryogenic Three-Piece Bodied
Extended Bonnet Ball Valve
/ " – 2" R6 and R7 C44, /
1 1
4
Installation, Operation and Maintenance Instructions
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.
1. INSTALLATION:
CAUTION: Tighten the packing nut before installing valve, due to
creep which occurs after initial assembly.
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. The arrow on the stem top or
bonnet will point downstream when the valve is open.
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 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.
Visit www.boighill.com to request a quote.
" – 2" R6 C4, / " – 2" R6 C4 V1-V2, and
1
4 2
/ " – 2" R7 C44 V1-V2
1
2
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 valve in place.
2. Remove three body bolts, loosen fourth, and swing out body
with ball open. Close the ball and remove the seats, ball and
fluoropolymer coated stainless steel gasket body seals.
(Discard the gaskets 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 body 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 new gaskets that are included with the valve.
6. IMPORTANT: The fluoropolymer-coated, stainless steel
gaskets that are included with the Worcester
Cryogenic valves make excellent seals, however, some points
of caution in their use require emphasizing:
a. The gasket body seals 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.
17646-L
/ " – 2"
1
4