Val-Matic 2-42 Sure Seal Foot Valve - Manual (Page 4)

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C WARNING: The line must be drained before
removing the valve or pressure
may be released causing injury.
MAINTENANCE
The Series 1900 Foot Valve requires no scheduled
lubrication or maintenance. If flow is stopped or
pump cavitation becomes apparent, it may be
necessary to flush debris from the valve inlet by
backflushing the valve or physically cleaning the
outside surfaces of the basket.
TABLE 2. FOOT VALVE PARTS LIST
TROUBLESHOOTING
Several problems and solutions are presented below
to assist you in trouble shooting the valve assembly
in an efficient manner.
•Leakage at Flanges: Tighten flange bolts, replace
gasket.
•Valve Leaks When Closed: Flush debris from seat
by cycling pump three times. If the valve continues
to leak after adjustment, check for the following
items and make the corrections.
1. Verify that there is no damage to the rubber
seat. Replace if torn or damaged.
2. Check that the metal seat in the body is clean
and free of scale and scratches.
3. Verify that the test pressure is less than the
cold working pressure (CWP) shown on the
valve nameplate.
4. Drain wet well with pressure on valve and
check basket flange seal. Tighten basket
flange bolts or replace gasket.
•Valve Slams: If adjustable pump, add time to the
shut down sequence. Check for trapped air in the
pump header, Check interior of valve bushing for
deposits or debris.
•Noisy Operation of Pump: Flow noise is normal.
Loud flow noise similar to hammering may be
cavitation from dropping high pressures suction
piping. Check for debris on outside surfaces of
basket or floor of wet well.
DISASSEMBLY
The valve should be removed from the pipeline for
disassembly. All work on the valve should be
performed by a skilled mechanic with proper tools.
Refer to Figure 2.
1. Remove the basket screen (12) by removing the
retainer screws (9).
2. Remove the ring plate (10) with the large bolts
(11).
3. Remove seat screws (6) (3 in. and larger
valves.) Remove the seat (2). Inspect resilient
seal for damage.
4. Remove the disc (3) and inspect the seating
surface for scoring or damage.
5. Remove the bushing nut (7) and bushing (5).
Inspect for wear or damage. The bushing
should be at least 1/32 in. Larger in diameter
than the disc stem.
Clean and inspect parts. Replace worn parts as
necessary and lubricate parts with FDA grease
C ITEM DESCRIPTION MATERIAL
1 Body Cast Iron
2 Seat* Bronze
3 Disc* Bronze
(with Buna-N)
5 Bushing* Bronze
6 Screw*
Stainless Steel
7 Retainer* Brass
8 Gasket* Fiber
9 Retainer Bolt* Stainless Steel
10 Ring Plate Steel
11 Bolt Assembly* Steel, Plated
12 Screen* Stainless Steel
*Recommended Spare Part
C WARNING: The basket flange can not be
removed with water pressure on
the valve or the seat may become
dislodged causing damage or
injury.