Flowserve Worcester Controls Miser Ball Valves - Manual (Page 2)

Flow Control Division
Worcester Controls
2 Miser Ball Valves WCAIM2030
c. Weld valve in line (when gas welding or brazing do not play
flame on valve body.)
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:
Carbon Steel Bolts Stainless Steel and Alloy 20 Bolts
Bolt Dia. In-Lbs Ft-Lbs Bolt Dia. In-Lbs Ft-Lbs
1 /
4
" 96-120 8-10 1 /
4
" 72-94 6-8
5 /
16
" 156-204 13-17 5 /
16
" 120-144 10-12
3 /
8
" 216-264 18-22 3 /
8
" 192-216 16-18
7 /
16
" 480-540 40-45 7 /
16
" 336-384 28-32
1 /
2
" 720-780 60-65 1 /
2
" 504-552 42-46
Note: Stainless steel bolts and nuts are generally used in all
three-piece valves with stainless steel bodies, FZ valves and
valves with “G” seats.
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. These include R12,
R14, R15, R17, R20, R22 or current R1 and R3 Revision level
44 and 59 valves. 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.
c. Care must also be taken when handling a graphite thrust
bearing, stem seal, or seat back seal. These parts can be
easily damaged by squeezing the O.D. of the seal. Parts are to
be handled on the flat surfaces rather than the O.D.
d. The ball used in valves with “A” and “G” (filled metal) seats is
round to special tolerances. To ensure proper contact with the
seat, do not drop, dent or scratch the ball during handling.
These balls also have an anti-galling coating. DO NOT use
uncoated balls with filled metal seats.
e. Standard WK44 and CL44 valves are furnished with one-
piece seat/body seals. More care than normal must be taken
to not damage the back face of these seats during
disassembly and reassembly.
f. WK44 valves and repair kits have been assembled, cleaned,
and packaged for ultra high purity systems, and caution
should be used to maintain the integrity of the valve parts.
g. WK44 valves are assembled with no lubrication.
B. OPERATION
1. The operation consists of turning the handle and/or stem 1 /
4
turn
clockwise to close and 1 /
4
turn counter-clockwise to open. When
the handle and/or stem flats are in line with the pipeline, the valve
is open. These valves may also be automated.
2. These valves will provide bubble-tight shut-off when used in
accordance with Worcester’s published pressure/temperature
chart. Valves with “G” seats meet the leakage rates of ANSI
B16.104 Class VI.
3. The diverter valve will allow no leakage through the closed outlet
port when used as described with the bottom port as the inlet. If
other inlet ports are needed, the three-way valve is to be used
which also does not allow leakage through the closed port.
The porting one (V1) style valve is operated by turning the handle
one quarter-turn to change selection of sources. With this style of
valve the flow is never shut-off and some mixing of the media is
possible. This valve is easily automated with a pneumatic or
electric actuator.
The porting two (V2) style valve is operated by turning the handle
one-half turn to direct the flow from one side to the other. With
this style valve, the flow is shut-off in the 90° position. (There is
no stop in this position.) This valve may be automated with an
electric actuator only.
4. It is not good practice to leave a ball valve partly open (throttling
operation) without knowledge of the pressure drop and flow at
that position.
5. As shipped from the factory, all valves (except CL44, WK44,
oxygen prepared (V20, V33 or prefix code “X”), and valves with
V38 or V6 options) contain a silicone-based lubricant. This is for
break-in purposes, and may be removed if it is objectionable for a
particular application by disassembling and solvent washing.
Lacquer thinner will remove the lubricant. “A” or “G” (filled metal)
seated valves should not be operated without a break-in lubricant.
6. Media which can solidify, crystallize or polymerize should not be
allowed to stand in ball valve cavities.
7. Torque Requirements – Operating torque requirements will vary
depending on the length of time between cycles, line pressure,
type of valve seats, and the media in the system. For a detailed
analysis of valve torque requirements, see Worcester’s Actuator
Sizing Manual.