Flowserve TB59 - Manual

06784-E
Tank Bottom Valves 1" and 1 1 /
2
" TB59
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 area 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 Miser valves may be installed for flow or vacuum in
either direction. Use care to exclude pipe sealants from the valve
cavity.
2. For welding weld end valves in line (SW, BW):
NOTE: prior to welding or brazing, thoroughly clean all joint surfaces
to prevent contamination.
a. Tack weld valve in place.
b. Remove three body bolts, loosen fourth, swing out body, with
valve open. Close valve, remove ball, seats and 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 (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 found in the valve as received are not to be
reused.
e. Tighten and torque body bolts evenly and diagonally opposite
each other, alternating in a criss-cross pattern. Use torque
figures below:
1" & 1-1/2" 59 VALVES WITH STAINLESS STEEL BOLTS
Bolt Dia. In. Lbs. Ft.—Lbs.
3/8" 192-216 16-18
1/2" 504-552 42-46
3. CAUTION: The TFE body seals (code T) make excellent seals.
However, some points of caution in their use need
emphasizing:
a. No TFE part (except seats) is reusable. Upon disassembly of
the valve, they should be discarded and replaced with new
parts.
b. Care must be taken to avoid scratching the TFE body deals
during installation. Light lubrication of these seals can help
prevent damage.
B. Operation
1. The operation consists of turning the stem 1/4 turn clockwise to
close and 1/4 turn counter-clockwise to open. When the stem
flats are in line with the pipeline, the valve is open. These valves
may be automated or operated manually.
2. These valves will provide bubble-tight shut-off when used in
accordance with Worcester’s published pressure/temperature
chart.
3. 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.
4. As shipped from the factory, valves (expect 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.
5. Media which can solidify, crystallize or polymerize should not be
allowed to stand in the 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.