Flowserve 45 Series Worcester Controls - Manual

Worcester Controls
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.
A. INSTALLATION
1. Valve may be installed for flow or vacuum in either direction. Valves
with upstream relief hole (V3 option) are one-way valves. Use care to
exclude pipe sealants from valve cavity.
2. For weld end style valves (SW, BW):
Note: Prior to welding, THOROUGHLY CLEAN ALL JOINT SURFACES to
prevent contamination.
The PT59 and PT45 “AG” & “GG”, and the 2" PT59 “AZ” & “GZ”
valves (identified with V67 option code) are compatible with welding
temperatures and therefore are weld-as-is and do not have to be
disassembled prior to being welded inline. A red welding tag will be
attached to the valve. If for some reason these valves are
disassembled, new “S” gasket, grafoil laminated gasket or Graph-
Lock body seals, and new seat back seals must be used to prevent
leakage. When welding these valves, the ball must be open to
prevent adhesion of weld spatter to the ball. Use STICK or MIG
welding and allow valve and joint to cool to the touch between
passes. All other valves are not compatible with welding
temperatures and must be welded inline as follows:
a. Tack weld valve in place.
b. With the valve open, remove all of the body bolts or studs and
remove the center section from the valve. Note: For 2" AF59
valves, spread pipe ends to clear centering rings. Close valve and
remove the ball, seats and both body seals. Return the body back
to its original position in the pipeline and temporarily secure it with
two body bolts or studs diagonally opposite each other.
c. Proceed to weld valve inline. If gas welding, do not play flame on
valve body.
d. Allow valve to cool, remove two body bolts or studs and
reassemble the valve. Note that all valves with Teflon or UHMWPE
body seals are reassembled using the original white Teflon or
opaque white UHMWPE body seals, while 2 1 /
2
" 45 and 2" 59 valves
with “S” gasket body seals are reassembled using new “S”
gaskets, 2" 59 valves with Graph-Lock body seals are reassembled
using new Graph-Lock body seals, and valves with Grafoil
laminated gaskets are reassembled using new gaskets. “S”
gaskets, Graph-Lock body seals and Grafoil laminated gaskets are
shipped separately from the valve and the temporary seals, found
in the valve as received, are not to be reused. The wide flange of
the “S” gaskets must face the valve body.
e. Tighten the body bolts or studs evenly and diagonally opposite each
other, alternating in a criss-cross pattern to the following torques:
3. CAUTION
a. The “S” gasket body seals (G & M) and Graph-Lock body seals (Z),
found in some 2 1 /
2
" 45, 2" 59 valves, Grafoil laminated gaskets (G),
and the seat back seals (used with “A” or “G” seated valves) are not
reusable. Upon disassembly of the valve, the seals must be
replaced. Also ensure that the Teflon coating of the “S” gasket is not
scratched or damaged during installation. Light lubrication of these
seals and gaskets can help to prevent damage.
b. If graphite parts are used, handle them gently on the flat surfaces
rather than the O.D. These parts can be easily damaged by
squeezing the O.D. These parts will not work if they are cracked or
broken. Light flaking of the material is acceptable.
c. The ball used in “A” or “G” (filled metal) seated valves has a
special anti-galling coating. DO NOT use uncoated balls with filled
metal seats. To ensure proper contact with the seat, do not drop,
dent or scratch the ball during handling.
18484-F
2 1 /
2
" – 6" 45, 2" – 4" 59
Three-piece Ball Valve Including PT Series
Installation, Operation and Maintenance Instructions
Carbon Steel Bolts or Studs Stainless Steel Bolts or Studs
Bolt Dia. in-lbs ft.-lbs Bolt. Dia. in-lbs ft.-lbs
7 /
16
" 480-540 40-45 7 /
16
" 336-384 28-32
1 /
2
" 720-780 60-65 1 /
2
" 504-552 42-46
9 /
16
" 1080-1140 90-95 9 /
16
" 682-730 57-61
5 /
8
" 1370 -1430 114-119 5 /
8
" 972-1020 81-85
3 /
4
" 1800-1860 150-155 3 /
4
" 1402-1450 117-121