Flowserve 51 Series Flanged Ball Valves - Manual

Worcester Controls
WCAIM2014
(Part 12224)
1 /
2
" - 2" 51/52 One-piece, Flanged Ball Valves
(Includes D, S, W, W2, AF, FZ, PT and CL Series)
Installation, Operation and Maintenance Instructions
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.
INSTALLATION
Valve 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.
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.
Note that for CL51/52 valves, the maximum pressure rating is 300 psi
per the Chlorine Institute. The Chlorine Institute recommends that the
relief hole in the ball be upstream, toward the pressure source. An
arrow stamped on the body or on a metal tag welded to the body
indicates flow path.
When installing, use standard gaskets suitable for the specific service.
Tighten flange bolts or studs evenly.
OPERATION
The operation consists of turning the handle and/or stem 1 /
4
turn
clockwise to close. The valve is open when the handle and/or stem
flats are in-line with the pipeline. These valves may also be
automated.
These valves will provide bubble-tight shutoff when used in
accordance with the Worcester’s published pressure/temperature
chart. Valves with “G” seats meet the leakage rates of ANSI B16.104
Class VI.
The diverter valve will allow no leakage through the closed outlet 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 stopped 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 stopped in the 90° position. (There is no stop in this
position.) This valve may be automated with an electric actuator only.
It is not good practice to leave ball valves partially open (throttling
operation) without knowledge of the pressure drop and flow at
that position.
As shipped from the factory, valves (except CL Series oxygen
prepared (V20, V33 or prefix code “X”) and valves with V38 or V46
option) 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.
Media which can solidify, crystallize or polymerize should not be
allowed to stand in ball cavities.
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.
NOTE: Media which contain fine powders (25 microns or less) will
significantly raise ball valve torque requirements.