Red Valve Tideflex Series Installation, Operation And Maintenance Manual page 2

INSTALLATION
1. INSPECTION OF VALVE:
Inspect the body and mating flanges for signs of damage. Check
all inspection and drain plugs to ensure that they are securely in
place. The mating upstream and downstream pipes should be
plumb and square to the 39F.
2. GASKETS:
The Series 39F contains a gasket between the body flanges.
This gasket is formed from 1/8" thick rubber and seals the area
between the ID of the body flange and the inside of the bolt circle.
The body flanges are serrated. Should the valve need to be
dismantled, new 1/8" thick gasket material must be obtained and
installed between the body flange ID and inside of the bolt circle.
There is a large inspection port at the top of the valve that is either
plugged or blind flanged at the factory, and two drain ports at the
bottom of the valve, also plugged at the factory.
Pipe tape is used to ensure a tight seal. Gasket for the mating
upstream and downstream flange is supplied by others.
1. INSTALLING FLANGE BOLTS:
Insert the bolts and tighten in a star pattern. Tighten all bolts
uniformly so as to distribute pressure evenly around the flange.
2. VALVE ORIENTATION:
When the Series 39F is installed in a horizontal pipeline, the bill of
the internal Tideflex valve should be vertical.
®
3. EXTERNAL VALVE SUPPORT:
Valve supports must be supplied at the locations and dimensions
shown on the submittal drawing. The supports ensure the valve
and mating pipe are not exposed to excessive stress due to the
weight of the valve and water in it. Note, the support shown is cas
concrete, but support weldments are suitable provided they are
manufactured to the dimensions shown on the submittal drawing.
120
o
OPERATION
The Series 39F operates solely on differential pressure. Forward
differential pressure will cause the Tideflex
the flow media. Reverse differential pressure with cause the Tideflex
Valve to close preventing backflow. The Series 39F Check Valve is a
self-contained check valve for use in gravity fed and pumped systems
provided the pressure conditions are within what was supplied when the
valve was ordered. The Tideflex
on the maximum line and backpressure. Backpressure in excess of
the supplied backpressure may damage or invert the sleeve and cause
failure. Should the conditions for which the valve has been designed
be altered or changed in any way, it could affect the normal operation
of the valve. Consult the factory with the new system specifications to
determine if the valve will operate properly.
Valve to open and discharge
®
check valve sleeve is fabricated based
®
Upstream Body
Body
Clamps
Flange
Upstream
Flange
Body
Flange
Lifting
Lug
Drain Plugs
MAINTENANCE
1. INSPECTION:
The valve should occasionally be inspected for damage and wear.
The inspection period should be determined by the severity of the
service and environment. If the valve is periodically inspected and
preventative maintenance done, the valve will last longer and operate
better.
CAUTION: DO NOT REMOVE ANY PARTS WITH PRESSURE IN
THE PIPELINE.
®
There is a large inspection port
located at the top of the valve and
two drain plugs located at the
bottom of the valve. The internal
Tideflex check valve should be
®
periodically inspected for damage,
wear, or entrapped solids in the bill. All pressure must be removed
and the valve body should be drained prior to removing the
inspection plug. Following inspection of the valve, reinstall the
inspection plug (use pipe joint compound or tape) and tighten.
Tideflex
®
Lifting
Lug
Downstream
Flange