Flowserve CPT Series Metal Characterized Seat Control Valves - Manual

1
Worcester Controls
CAUTION: Flowserve recommends that all product 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. CPT 94 Series three-piece and flanged one-piece valves may be
installed for flow in either direction. Use care to exclude pipe
sealants from the valve cavity.
B. When installing CPT 94 flanged one-piece valves, use standard
gaskets suitable for the specific service. Tighten flange bolts or
studs evenly. Follow ANSI standards for flange bolt torque.
C. For Weld End Valves (SW, BW):
NOTES: Prior to welding, THOROUGHLY CLEAN ALL JOINT
SURFACES to prevent contamination. Valves with “PG”, “RG”,
“XG”, “AG” and “GG” seat/body seal combinations and V67 option
code are compatible with welding temperatures. Therefore, these
valves are weld-as-is and do not have to be disassembled to be
welded inline. A red welding tag will be attached to the valve. If
these valves are disassembled, the graphite coated stainless steel
gasket body seals (Code “G”), and the seat back seals (used with
“A” or “G” seats only) must be replaced. When welding these
valves, the valve must be open to prevent adhesion of weld spatter
to the ball. Use STICK or MIG welding, allow valve and joint to cool
to the touch between passes.
For All Other Weld End Valves:
1. Tack weld the valve in place.
2. Remove all four body nuts and bolts, and place the valve in
the open position. Remove center section from between pipe
ends by separating the pipe ends from the body by at least
1 /
8
"
to allow locating diameter on the back of the metal
characterized seat (inserted into oversized pipe end bore) to
clear pipe end flange. With valve in closed position, remove
seats, seat back seal(s), body seals and ball.
3. Return the body to its original position and temporarily secure
it with two bolts diagonally opposite each other.
4. Weld valve inline. If gas welding is used, do not play flame on
valve body.
5. Allow valve to cool. Remove body and with stem in the closed
position, replace ball, seats and install new seat back seal(s),
which are shipped separately from valve. Do not reuse old
seat back seal(s). The characterized seat has a “V” or “Slot”
cut in it for improved flow control, and must be properly
oriented to function. A locating pin is provided in the body,
and a groove in the seat, to assure that proper alignment is
accomplished. The seat must fit properly and not jam on the
pin. The opposite seat has a standard round port in it.
6. Open the valve and replace body seals, or add new body
seals, if they were shipped separately from the valve.
Temporary Buna body seals, if found in the valve as received,
are not to be reused. If coated stainless steel “S” gasket body
seals are used (Code M or G), install them with wide flange
facing the body (see view A-A on page 7). Before putting the
center section between the pipe ends, make sure that the seat
back seal is centered on the back of the seat. If it is not, it
could be damaged or cause the valve to leak.
7. Place center section between pipe ends by separating the pipe
ends from the body by at least 1 /
8
" to allow locating diameter
on the back of the metal characterized seat (for insertion into
oversized pipe end bore) to clear pipe end flange. Replace
actuator and body bolts and nuts. Tighten and torque the
body bolts evenly and diagonally opposite each other,
alternating in a criss-cross pattern to the figures on the
following page.
D. CAUTION
The fluoropolymer body seals (code T) and the coated stainless
steel gaskets (codes M & G) make excellent seals. However, some
points of caution in their use need emphasizing:
1. No coated stainless steel gasket body seal, graphite seat back
seal or fluoropolymer part (except a seat) is reusable. Upon
disassembly of the valve, they should be discarded and
replaced with new parts.
09015-G
Metal Characterized Seated Control Valve
1 /
2
"-2" CPT 94, Three-Piece Ball Valves, 1 /
2
"-4" CPT 94 150/300,
1"-2" CPT 94 600 Flanged One-Piece Ball Valves
Installation, Operation and Maintenance Instructions