Flowserve 608 Series Ball Valve - Manual

Installation, Operation
and Maintenance
Instructions
Series 608 Ball Valve
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.
1.0 INSTALLATION
1. 608 valves may be installed for flow or vacuum
in either direction. Use care to exclude pipe
sealants from the valve cavity. Valves with
upstream relief hole in ball (V3 option) are one-
way valves.
2. Weld End Valves (TE, SW, BW): NOTE: Prior
to welding , THOROUGHLY CLEAN ALLJOINT
SURFACES to prevent contamination. Valves with
“PG”, “RG”, “XG”, “AG”, and “GG” seat and 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 in the line. These
valves will have a red welding tag attached. If
these valves are disassembled, the graphite-
coated stainless steel gasket body seals and the
seat back seals (used with “A” or “G” seats only)
must be replaced. 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. For all other weld valves:
a. Tack weld valve in place.
b. With valve open, remove three body bolts,
loosen fourth and swing out body. Remove fourth
bolt and spread pipe ends Close valve, remove
ball, seats, body seals. Return body to its original
position and temporarily secure it with two body
bolts diagonally opposite each other.
c. Weld valve in line.
d. Allow valve to cool, reassemble valve. Install
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), the wide flange of
the “S” gasket must face the valve body. See
View A-A detail on page 5.
e. Tighten and torque body bolts evenly and
diagonally opposite each other, alternating in a
criss-cross pattern. Use torque figures below:
Note: Stainless steel bolts and nuts are generally
used in all three-piece valves with stainless steel
bodies.
CAUTION: The fluoropolymer and UHMWPE
body seals (codes T and U), and the coated
stainless steel gaskets (codes M and G) make
excellent seals. However, some points of
caution in their use need emphasizing.
3.
a. No fluoropolymer or UHMWPE part (except a
seat) or seat back seal is reusable. Coated
stainless steel gaskets are also not reusable and
cannot be used in stainless bodies with cast
surfaces or serrations in body seal area. Upon
disassembly of the valve, these seals or gaskets
should be discarded and replaced with new parts.
b. Care must be taken to avoid scratching the
fluoropolymer or UHMWPE seals or the coating of
the stainless steel gaskets during installation.
Light lubrication of these seals can help to prevent
damage.