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

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2”-42” SERIES 1900 FOOT VALVE
OPERATION, MAINTENANCE AND INSTALLATION
INTRODUCTION
This manual will provide you with the information to
properly install and maintain the valve to ensure a
long service life. The Series 1900 Foot Valve is
ruggedly constructed with bronze or stainless steel
trim to give years of trouble free operation. The
valve should be installed in a vertical suction pipe
carrying clean water.
The Foot Valve is designed to open fully to provide
flow in the forward direction and close rapidly upon
flow reversal. The valves are used to prevent
reverse flow and maintain the prime on pumps. The
size, cold working pressure, and model number are
stamped on the nameplate for reference.
This valve is not intended for fluids containing
suspended solids such as wastewater. For
wastewater and other high turbidity applications, use
Val-Matic Series 500 Swing-Flex
® Check Valves.
RECEIVING AND STORAGE
Inspect valves upon receipt for damage in shipment.
Unload all valves carefully to the ground without
dropping. When lifting, the valve should be secured
by the body and never lifted by the basket or trim.
The valves should remain crated, clean and dry until
installed to prevent weather related damage. For
long term storage greater than six months, indoor
storage is recommended. Do not expose the
resilient seat to sunlight or ozone for any extended
period.
FIGURE 1. FOOT VALVE WITH INLET SCREEN
DESCRIPTION OF OPERATION
As shown in Figure 1, the valve consists of a body, a
disc, and a seat with a resilient seal. The valves are
designed to prevent reverse flow and maintain a
flooded suction when installed at the foot or end of
the suction piping. The resilient seal provides drop-
tight shutoff and the basket prevent debris from
entering the valve and piping system.
The seat and seal are rigidly held in the bottom of
the valve. As the flow enters the valve from the
bottom, the disc is lifted by the flow and guided to
the open positions by bushings in the body. Upon
pump shut down, the return flow and weight of the
disc close the valve rapidly and maintain the pump
prime.
CAUTION: This valve is not intended for
fluids containing suspended
solids or hazardous fluids.