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Supplier Details - ChemTec Equipment
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ChemTec Equipment
is a leading manufacturer of flow monitors, flow switches, flow meters and excess flow valves (EFV's). ChemTec's broad line of products are offered in a variety of materials to insure fluid compatibility, including Teflon, 316L stainless steel, brass, PVC, polypropylene and acrylic.
Visit ChemTec Equipment online.
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Featured Products
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Excess Flow Valves - Automatic Reset
Excess Flow Valves are normally open valves that close automatically at a predetermined flow rate. Models are designed to operate in the lower flow ranges, i.e. 120 SCFM air, 20 GPM water or less.
In this auto reset model, after actuation, the piston rests on a metal to metal seat which
allows a controlled bleed. To reset the unit, pressure must be equalized on both sides of
the piston. If the source is turned off, either upstream or downstream, the bleed will
equalize the pressure and the valve will automatically reopen by magnetic repulsion from
the fixed magnet located in the valve body.
Datasheet 
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Excess Flow Valves - Manual Reset
Excess Flow Valves are normally open valves that close automatically at a predetermined flow rate. Models are designed to operate in the lower flow ranges, i.e. 120 SCFM air, 20 GPM water or less. In this manual reset model, after actuation, the piston makes a bubble tight seal when it comes in contact with the seat. To reopen the unit, turn the balancing valve handle on the side. This ports the upstream pipeline to the downstream pipeline. When the pressure is equalized on each side of the piston, it will reset. The unit is returned to normal operation by closing the balancing valve.
Datasheet
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