Flowserve 51 Series - Manual

Worcester Controls
12230-N
3" - 10" 51/52, 3" - 6" 4, 151/301
Flanged and Wafer One-Piece Ball Valves
(Including D, PT, CL, AF and FZ Series Valves)
Installation, Operation and Maintenance Instructions
CAUTION: Worcester 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.
A. INSTALLATION
1. Standard valves may be installed for flow or vacuum in either
direction. Valves with upstream relief hole in ball (V3 option) are
one-way valves. Use care to exclude pipe sealants from valve
cavity.
Diverter valves (D51) may be installed using the bottom port as
the inlet port. The flow can then be diverted to either one of the
two side outlet ports.
For chlorine valves, the maximum pressure rating is 300 psi. The
Chlorine Institute Pamphlet #6 recommends that the relief hole in
the ball be upstream when valve is closed, toward the pressure
source.
2. When installing, use standard gaskets suitable for the specific
service. Tighten flange bolts or studs evenly.
3. On 151 and 301 wafer valves, it is recommended to leave the ball
in the open position while installing, to eliminate possibility of
damaging ball finish.
B. OPERATION
1. The operation consists of turning the handle and/or stem 1 /
4
turn
clockwise to close, and 1 /
4
turn counterclockwise to open. When
stop plate pointer and/or stem groove is in line with the pipeline,
the valve is open. These valves may also be automated.
2. These valves will provide bubble-tight shutoff 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 output
port when used as described with the bottom port as the inlet.
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) 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 partially open (throttling
operation) without knowledge of the pressure drop and flow at that
position. These conditions should be checked with Flowserve.
5. As shipped from the factory, all valves (except chlorine, oxygen
prepared (V20, V33 or prefix code “X”) and valves with V38 or V46
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.