Red Valve Tideflex Series Installation, Operation And Maintenance Manual page 3

2.ELASTOMER SLEEVE REPLACEMENT
1. If the Tideflex
valve needs to be replaced in the valve, the
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following steps should be performed:
A. Remove internal pressure and drain water.
B. Remove bolts from mating flanges.
C. Remove valve from the line and place on a solid, flat surface
capable of supporting its weight.
D. Secure the upstream body half by suspending it from above. A
sling should be used around the pipe stub. DO NOT connect wire
or chain to the flange bolt holes, as this may damage the flange.
E. Slide the upstream body half and body out of the downstream half.
Place it on wood beams or another soft surface with the upstream
flange resting on the wood beams and the Tideflex
vertically upward. Take care not to damage the flange.
CAUTION: The internal Tideflex
upstream body half. It must be pulled out horizontally until the
internal Tideflex check valve is clear of the plate. Do not attempt
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to lift the plate vertically. Damage to the Tideflex
occur.
NOTE: Use the "Tideflex All-Rubber Check Valve" IOM for proper
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handling, storage, and installation instruction for the Tideflex
Check Valve.
F. Remove the bolts that are used as pins in the Tideflex
G. Loosen and remove the clamps.
H. Lift the Tideflex valve off of the pipe stub. Install the new Tideflex
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valve with the bill in the correct position (vertical after assembled)
onto the pipe stub. Ensure that the valve slides on the stub far
enough to hit the cuff stop. This will ensure the valve is properly
located.
I. Once the Tideflex valve is installed, locate the clamps on the cuff
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and tighten. Rotate the "ears" of the clamp (90
for three) to ensure an adequate seal around the cuff.
J. Use the four predrilled holes in each of the clamps as a template
and use a 1" drill bit to drill through the rubber cuff and through the
metal stub. Install the four 7/8" bolts in each clamp and tighten the
nuts to ensure valve is pinned to stub.
K. Wire brush the gasket material from both of the large body flanges.
Attach 1/8" thick gasket material to the downstream body flange
and fill the area between the ID of the flange and the inside of the
bolt holes. Overlap any seams.
L. Slide the upstream body half, with Tideflex
downstream body half. Line up the bolt holes. Install bolts and
tighten in a star pattern.
M.The valve is now ready to be reinstalled into the pipeline.
Red Valve • 750 Holiday Drive, Suite 400, Pittsburgh, PA 15220 • 412-279-0044 •
valve pointing
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check valve is clamped to the
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valve could
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clamps.
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for two clamps, 60
o
valve installed, into the
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© 2023 Red Valve Company
STORAGE
If your Series 39F Check Valve is to be stored for a period of
time prior to installation, the following storage guidelines will help
preserve your valve and ensure a trouble free installation.
1. Store in a clean, cool, dry area. Avoid exposure to light, electric
motors, dirt or chemicals.
2. Store valve in a manner to prevent other items from contacting the
check sleeve or flanges to prevent possible damage.
3. Store this manual with the valve so that it is readily available at the
time of installation.
TROUBLESHOOTING GUIDE
SYMPTOM: VALVE WILL NOT CLOSE FULLY, OR CHECK
• Possible obstruction in line. Inspect the valve for entrapped foreign
objects which may have lodged between the lips of the valve.
• Ensure there is clearance below the Tideflex
bottom of the body.
• Backpressure may not be sufficient to completely seal the valve.
SYMPTOM: SLEEVE RUPTURE/INVERSION
• Excess backpressure. Verify static backpressure and identify possible
surge pressure or vacuum pressure.
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SYMPTOM: LEAKING FROM FLANGES
• Loosen and retighten bolts in a star pattern to ensure even pressure
distribution around flange.
• If leakage persists, replace flange gasket and retighten bolts in star
pattern.
o
Upstream Body Half
Inspection Ports
support@redvalve.com
check Vvlve and the
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Downstream Body Half
Drain Plugs
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