Flowserve E818 Series - Manual

Worcester Controls
WCAIM2057
(Part 16774)
E818/828 Series Fugitive Emissions 150# and 300#
Flanged 2" - 8" Two-Piece Ball Valves
Installation, Operation and Maintenance Instructions
CAUTION: Flowserve recommends that all products 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 the
valve cavity.
2. When installing, use standard gaskets suitable for the specific
service. Tighten flange bolts or studs evenly. Follow ANSI
standards for flange bolt torques.
B. OPERATION
1. The operation consists of turning the stem (by manual or
automated means) 1 /
4
turn clockwise to close, and 1 /
4
turn
counterclockwise to open. When the handle (if used) and/or stem
flats or groove are in line with the pipeline, the valve is open.
2. These valves will provide bubble-tight shutoff when used in
accordance with Worcester’s published Pressure-Temperature
Chart.
3. Do not leave the ball valve partly open (throttling operation) without
having first determined whether the pressure drop and/or flow rate
are detrimental to the valve seats. These conditions should be
checked with Worcester’s Control Valve Brochure or the factory.
4. As shipped from the factory, valves (except oxygen prepared
(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.
5. Media which can solidify, crystallize or polymerize should not be
allowed to stand in ball valve cavities.
6. 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.
CAUTION: The fluoropolymer body seal (T) and the graphite
body seal (Z) make excellent seals. However, some points of
caution in their use need emphasizing.
• No fluoropolymer part (except seats) is reusable. Graphite body
seals are also not reusable. Upon disassembly of the valve,
they should be discarded and replaced with new parts.
• Care must be taken to avoid scratching the fluoropolymer
during installation. Light lubrication of these seals can help to
prevent damage.
C. MAINTENANCE
For maximum stem seal life, proper packing adjustments procedure
must be followed.
Tighten packing gland bolts to the torque values in the table on the next
page. Alternate between the two gland bolts when tightening to
maintain the alignment of the gland plate with the top of the valve body.
Some rocking of the gland plate can be tolerated; however, excessive
misalignment may cause premature failure of the stem packing.
NOTE: After adjustments, packing creep will occur over several hours.
Bolt torque measured then will be less.