Spears YV-3A-0614 Información De Instalación

Y-Pattern Valve
Installation Instructions
Y-Pattern Valves are designed for
proportional throttling and control of
fl uid fl ow. Valves may be mounted in
any position, however, attention to
direction of fl ow is required for optimum
valve function and is designated by the
arrow on the valve body.
Read all applicable instructions and
procedures thoroughly before starting.
Suitability of the intended service
application must be determined prior
to installation. Plastic piping systems
must be engineered, installed, operated and maintained in accordance with
accepted standards and procedures for plastic piping systems. It is absolutely
necessary that all design, installation, operation and maintenance personnel
be trained in proper handling, installation requirements and precautions for
installation and use of plastic piping systems before starting. Y-Pattern Valves
are designed for direct in-line installation without any adjustments.
See "Precautions and Warnings" for all installations in this instruction.
SOLVENT CONNECTIONS
STEP 1
1
STEP 3
Unnecessary OVER TIGHTENING will cause damage to
both pipe and Y-Pattern valve threads.
FLANGED CONNECTIONS
Once a fl ange is attached to the pipe or valve, the method of joining two fl anges
are as follows:
STEP 1
Use of well lubricated bolts &
fl at washers are required. Use
an anti-seize lubricant such
as IMS Cooper Flake.
STEP 2
With a 1/8" gasket having a shore "A" durometer of approximately 60 in place,
align the bolt holes of the mating fl anges by rotating the ring into position.
Insert all bolts, washers, and nuts. Tighten the nuts by hand until they are
snug.
AT THIS TIME, BE SURE THAT THE FLANGE AND GASKET SURFACES
ARE FLUSH AND SQUARELY ALIGNED.
DO NOT USE BOLTS TO BRING TOGETHER
IMPROPERLY MATED FLANGES.
4
STEP 2
CAUTION: Care must be taken to prevent primer or cement contact with seat
or internal valve components.
YV-3A-0614
REPEAT PRIMER APPLICATION IF NECESSARY.
THE MOST FREQUENT CAUSE OF JOINT FAILURE IS INADEQUATE
PRIMER PENETRATION AND SOFTENING OF BONDING SURFACES
DURING THE WELDING OPERATION.
STEP 3
STEP 3
Tighten bolts in 5 ft. lbs.
increments.
3 3
1 1
2 2
4 4
Flange
Size
(in.)
1/2 - 1-1/2
2 - 4
Check the penetration and
softening by scraping the
primed surfaces. A few
thousandths of the semi-
fl uid surface should easily
be removed.
2
Recommended
Torque
(ft. lbs.)
12
25
5
STEP 4
HOLD 30 SECONDS
Allow joint to cure according to solvent
cement manufacturer's instructions.
THREADED CONNECTIONS
WARNING: SOME PIPE JOINT COMPOUNDS OR PTFE PASTES MAY
CONTAIN SUBSTANCES THAT COULD CAUSE STRESS CRACKING
TO PLASTIC. TRANSITIONS TO METAL PIPE REQUIRE THOROUGH
CLEANING AND DEGREASING TO REMOVE ANY PIPE THREAD
CUTTING OIL.
Spears ® Manufacturing Company highly recommends the use of Spears
BLUE 75™ thread sealant, which has been tested for compatibility with
Spears products.
®
STEP 1 STEP 2
Apply Joint Sealant
1 to 2 turns beyond "FINGER TIGHT" are generally all that is
required to make a sound plastic threaded connection.
3
PRECAUTIONS AND WARNINGS
CAUTION: The system must be designed and installed so as not to pull the
components in any direction. Pipe system must be cut and installed in such a
manner as to avoid all stress loads associated with bending, pulling, or shifting.
All piping systems must be supported.
CAUTION: BEFORE THE VALVE IS CYCLED, all dirt, sand, grit or
other material shall be fl ushed from the system. This is to prevent scarring of
internal components; e.g. ball, cup, wedge, seats, etc.
WARNING: System should not be operated or fl ushed out at fl ow velocities
greater than 5 feet per second.
All air must be bled from the system during the initial fl uid fi ll. Pressure testing
of the system must not be made until all solvent cement joints have properly
cured. Initial pressure testing must be made at approximately 10% of the
system hydrostatic pressure rating to identify potential problems prior to testing
at higher pressures.
NOT FOR DISTRIBUTION OF COMPRESSED AIR OR GAS.
SPEARS MANUFACTURING
®
COMPANY
CORPORATE OFFICE
15853 Olden Street, Sylmar, CA
91342
PO Box 9203, Sylmar, CA 91392
(818) 364-1611
www.spearsmfg.com
© Copyright 2014 Spears ® Manufacturing Company. All Rights Reserved.
Printed in the United States of America 06/14.
®
Assemble Joint
YV-3A-0614