The Fig 90G Check Valve is designed for use with Anvil Gruvlok
couplings for fast and easy installation on grooved pipe.
Grooved ends conform to the requirements of AWWA C606.
The valve is fitted with a large bonnet closure for ease of field
servicing.
All Fig 90G Check Valves are supplied with a ½" NPT pipe plug
installed in the bonnet cap.
The valve is available with Bonnet Gaskets and Clapper Seals made
from EPDM or Nitrile.
The 400G is a center guided, spring loaded, silent
check valve. Designed and engineered for silent
operation with low head loss, the valve disc will close
prior to the reversal of flow, thereby preventing or
minimizing water hammer and damaging shock.
• The 400G can be used in any HVAC, industrial or
commercial grooved piping systems.
• The valve is designed for liquid service with any
pipe orientation, flow up or down.
• Bronze metal seats are standard, with Stainless
Steel or resilient seats available as an option.
• Flow coefficients for this valve are some of the
lowest in the industry and are listed for each size
on the drawing.
The Gruvlok Series 7800 Check Valve is a compact, cost effective valve
offering low pressure-drop, non-slam performance. The Series 7800 Check
Valve assembly is lighter and faster to install, and costs less than flanged and
wafer valve assemblies.
In the fully open position the Series 7800 swing clapper is held tightly against
the valve body, out of the flow stream, to provide maximum flow area and
prevention of clapper flutter. The clapper design produces quick, non-slam
closure before flow reversal can occur, while meeting FM requirements for an
anti-water hammer valve rating.
Each valve is hydrostatically tested for leak tightness to 500 PSI. The clapper-
seat design permits leak free sealing of back pressures in service conditions
ranging from 300 PSI (20.7 bar) to as low as 1 PSI (0.07 bar) (head pressure: 28").
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