Flowserve H71 User Manual

Worcester Control Valves

CAUTION: Flowserve recommends that all product that 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.

Worcester’s H71 valves will operate to 6000 psi at normal
ambient temperature (-40° to 185°F, -20° for carbon steel). If
used on liquid medias at these pressures, caution must be
practiced. Most liquid medias will flash or cavitate severely
when the pressure drop exceeds approximately 40% of the
system pressure. Severe valve and valve seat damage can
result.

Free discharge at these pressures is not recommended.

INSTALLATION

1. H71 valves may be installed for flow 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.

2. Weld End Valves:

NOTE: Prior to welding, THOROUGHLY CLEAN ALL JOINT SURFACES
to prevent contamination.

For all weld valves (SW, BW, End Connections):

a. Tack weld valve in place.

b. With valve open, remove all but one body bolt, loosen it and

swing out body. 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, lubricate ball and seat with Lubriplate

930AA and reassemble valve.

e. Tighten and torque body bolts evenly and diagonally opposite

each other, alternating in a criss-cross pattern. Use torque
figures shown.

CARBON STEEL STAINLESS STEEL

BOLTS - B7 BOLTS - B8 CL2/2B

Bolt Dia. In.-Lbs. Ft.-Lbs. Bolt Dia. In.-Lbs. Ft.-Lbs.

3/8" 480-540 40-45 3/8" 420-480 35-40

7/16" 680-720 55-60 7/16" 600-680 50-55

1/2" 984-1044 82-87 1/2" 960-984 80-82

5/8" 2100-2136 175-178 5/8" 1980-2040 165-170

3/4" 2940-3000 245-250 3/4" 2520-2580 210-215

NOTE: Stainless steel bolts and nuts are generally used in all three-
piece valves with stainless steel bodies.

f. Cycle the valve three times to break in the seats.

OPERATION

1. The operation consists of turning the handle and/or stem a
quarter-turn clockwise to close and a quarter-turn counter­clockwise to open. When the handle and/or stem flats are in line
with the pipeline, the valve is open.

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, all valves may contain a silicone­based lubricant (H71 valves also contain a lithium based grease).
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.

14932-D

High Pressure Series H71

(C0214, C0222, C0224) Ball Valves

Installation, Operation and Maintenance Instructions

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 the Worcester Actuator
Sizing Manual.

MAINTENANCE

Tighten retaining nut if seepage is noted at stem.

CAUTION: For maximum stem seal life, proper stem adjustment
procedure must be followed. Excessive tightening causes
higher torque and shorter stem seal life.

For 1/2"–1 1/2" Valves with two Stem Nuts and a Lockwasher (Manual
Valves):

1. Tighten retaining nut (lower nut) until Belleville washers are flat,
the nut will “bottom”.

2. Back off retaining nut 1/6 turn.

3. Tighten top nut securely to lock retaining nut in place.

For 1/2"–1 1/2" Valves with Self-Locking Stem Nut and four Belleville
washers (Automated Valves):

1. Tighten self-locking stem nut until Belleville washers are flat, the
nut will “bottom”.

2. Back off 1/3 turn.

CAUTION: The self-locking stem nut is difficult to tighten, and
must fully flatten Belleville washers before backing off.

For 2" Valves

1. Tighten retaining nut 1/6 turn at a time until seepage stops.

REBUILDING

a WARNING: Ball valves can trap high-pressure fluids in ball
cavity when closed.

If the valve has been used to control hazardous media, it must be
decontaminated before disassembly. It is recommended that the
following steps be taken for safe removal and disassembly:

• Relieve the line pressure. Operate the valve prior to attempting
removal from line.

• Place valve in half-open position and flush the line to remove any
hazardous material from valve. (See Caution, page 1,
paragraph 2.)

• All persons involved in the removal and disassembly of the valve
should wear the proper protective clothing such as face shield,
gloves, apron, etc.

1. A standard repair kit may be ordered for these valves, consisting
of seats and body seals, two or four Belleville washers, stem
seals, and thrust bearings. Specify the material of seats and body
seals, size, Series and R number (revision number) of valve or for
non-standard valve, the “P”, “T”, “C”, or similar number, as found
on the valve nameplate or on the actuator bracket nameplate. If
valve body is stainless steel, place a “6” after valve size in repair
kit ordering code.

To Order:

Valve Size/HRK71/Material/Rev. Number or P, T, C, etc. Number

Example: 1" 6 HRK71 XV C0222

CAUTION: If the seats and seals installed differ from those
removed, the valve nameplate or stop must be replaced or
remarked to indicate the altered materials and ratings, or valve
tagged to so indicate.

2. To replace seats and seals:

a. Place valve in open position, remove all but one of the body

nuts and bolts, loosen remaining one, swing out center
section from between pipe ends with valve open.

b. With valve in closed position, remove old seats, body seals,

and ball.

c. For 1/2"–1" valves remove handle nut, lockwasher, one-piece

handle and stop (if manual valve). (This step is not applicable
to valves with self-locking stem nut.)

For 1-1/2" valves only, remove handle nut, lockwasher, one­piece wrench/stop and extension (if manual valve). This step
is not applicable to valves with self-locking stem nut.

For 2" manual valves only, remove handle assembly (wrench
block and extension), by removing hex head screw.

d. Using handle or a wrench to prevent stem from turning,

remove retaining or self-locking stem nut, stop (2" manual
valve only, or stem spacer if automated valve), Belleville
washers (1/2"–1 1/2" only), and follower from stem. Remove
stem through body cavity.

e. Remove thrust bearing(s) from body or stem, stem seals, and

stem seal protector from recess in top of body.

f. Clean all sealing surfaces of valve including the ball.

NOTE: The ball and the surfaces against which the seats and seals are
installed should be undamaged, clean and free of pit marks and
scratches. Light marring from the action of the ball against the seats is
normal and will not affect the operation of the valve. Flaws which can
be seen but barely detected with fingertips are acceptable. The stem
and body surfaces that the thrust bearings and stem seals contact
must be undamaged, clean, and free from pit marks and scratches.

g. Lightly lubricate the ball, seats, body seals, stem seals, stem

seal protector, and thrust bearings with a lubricant compatible

Flow Control Division

Worcester Control Valves

2 14932-D