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Y-Strainer
Installation Instructions
Y-Pattern Strainers may be mounted in either
horizontal or vertical positions.
attention should be paid to fl ow direction
as indicated on the strainer body.
strainer basket should be pointed downward
to properly collect sediment and facilitate
fl ushing.
Read all applicable instructions & 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-Strainers are
designed for direct in-line installation without any adjustments.
See "Precautions and Warnings" for all installations in this instruction.
True Union Y-Strainer
Socket
Y-Strainer
SR Threaded Y-Strainer
Flanged Y-Strainer
SOLVENT CEMENT WELDED JOINTS
STEP 1
Prepare connecting pipes as required.
Bevel and deburr.
1
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
Copper 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.
DO NOT USE BOLTS
TO BRING TOGETHER
IMPROPERLY
MATED FLANGES.
SPECIAL SPLIT
RING FLANGE
INSTRUCTIONS FOR
3" & 4" STRAINERS
Place rings as shown over the fl ange hubs at each end of the strainer body.
Insert new bolts, washers and nuts into new pipe system fl anges, through
gasket and into the split ring fl ange in alignment. Continue to instruction 3.
BOLT TORQUES
Strainer Size
Torque Value
1/2" to 1-1/2"
12 ft. lbs.
2" to 4"
25 ft. lbs.
6" Venturied
40 ft. lbs.
4
CAUTION: Care must be taken to prevent primer or cement contact with
seat or internal strainer components. True Union style End Connectors
should be removed from strainer body for installation.
STEP 2
YS-3A-0713
However,
Apply Primer.
The
THE MOST FREQUENT CAUSE OF JOINT FAILURE IS INADEQUATE
PRIMER PENETRATION AND SOFTENING OF BONDING SURFACES
DURING THE WELDING OPERATION.
STEP 3
Typical Strainer Support
STEP 4
STEP 3
5 5
3 3
7 7
2 2
6 6
MAINTENANCE & SERVICE INSTRUCTIONS
The Screen Support Housing can be easily accessed from the Bonnet Nut
for screen replacement or internal component service. CAUTION: Before
servicing, the system should be shut down, depressurized and drained.
STEP 1
counterclockwise direction. NOTE: Screen housing is attached to the inside
of the bonnet nut and will slide out when nut is removed. Remove Screen
Support Ring and Screen. Clean all components and replace as necessary.
To service or replace O-ring, remove Retaining Clip from top of Bonnet Nut
and separate Screen Support Housing from Bonnet Nut. Examine O-rings for
debris or damage. Clean or replace as necessary.
STEP 2
then install Screen Support Ring. NOTE: Make sure that tabs on Screen
Support Ring are aligned properly with end of Screen Support Housing
before snapping into place. Apply a mild soap & water solution to O-ring and
slide the reassembled Screen Support Housing back into the Strainer Body.
NOTE: If O-ring was serviced, insert Screen Support Housing into Bonnet
Nut and reinstall Retaining Clip. Turn Bonnet Nut in a clockwise direction until
properly seated.
Apply Cement.
Hold 30 seconds.
Allow joint to cure according to solvent cement
manufacturer's instructions.
2
1
1
8 8
Tighten bolts in 5 ft. lbs.
increments.
4 4
Remove Bonnet Nut by turning it in a
Plug
O-ring
Retaining Clip
Bonnet
Screen Support
Magnetic Plug
Housing
(Optional)
Housing O-ring
Screen
Screen
Support Ring
Strainer Body
Reinstall Screen into Screen Support Housing, and
5
STEP 5
DO NOT USE THE REMAINING UNION NUT TO DRAW TOGETHER ANY
GAPS BETWEEN THE END CONNECTOR AND THE STRAINER BODY
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
Apply Thread Sealant.
STEP 2
Assemble Joint -
"FINGER TIGHT"
STEP 3
Only 1 to 2 turns beyond "FINGER TIGHT".
Unnecessary OVER TIGHTENING
will cause damage to both pipe and
Y-Strainer socket.
Strainer Basket must be pointed DOWN
for proper operation.
3
QUICK FLUSH
STEP 1
Depressurize system (Or install a Bleed-off valve) and remove O-ring sealed
Drain plug.
STEP 2
Flush to remove debris.
STEP 3
Re install drain plug.
Tighten snug.
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.
WARNING: System should not be operated or fl ushed out at fl ow velocities
greater than 5 feet per second.
WARNING: 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
15853 Olden Street, Sylmar, CA
91342
PO Box 9203, Sylmar, CA 91392
(818) 364-1611
www.spearsmfg.com
© Copyright 2021 Spears
®
Manufacturing Company.
Printed in the United States of America 11/21.
HAND
TIGHTEN
ONLY
®
All Rights Reserved.
YS-3A-0713
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