Boot Seals Weatherproof WA-WGC Pipe Seals pipe not centered Pipe-Seals external units WA-GPP-T Pipe-Seals external WA-GP-B Pipe Seals- multi pipe seals WA-GP-W Pipe Seals water hammer isolation Pipe Seals & waterproof liner Pipe Seals vibration damping Pipe Sealing metal tank walls Pipe Seals axial movement WA-GP-NS Pipe Seals through floors End Seals casing pipes Pipe Plug Seals taper fit Manhole Seals joint jnflow Pipe Seal Boots Septic Tanks Connector Boots pipe to manhole Pipe Seals Weatherproof Split Boot Pipe Seals hi-temp silicone rubber Pipe Sealing Internal repair
Wall Sleeves for Large Pipes Wall Sleeves External Wall Wall Sleeves Split For Existing Pipes Wall Sleeves Split Boot Weatherproof Wall Sleeves Flange Connect Wall Sleeves Puddle Flange Wall Sleeves Tank Connection Wall Sleeves Multi-Conduit Wall Sleeves Tempoary Entry
Casing Spacers non-metallic Casing Spacers Multi Pipes Casing Spacers - Steel Casing Spacers Adjustment Legs Casing Spacer with Joint Restraint
Repair Clamp Split Bolted Repair Clamps Flange Leak Repair Clamps Pit Hole Leaks Repair Clamps Encapsulating Repair Clamps Pipe Bends Repair Inside Pipe Leak
Couplings Pipe Restraint Pipe Couplings Plastic PVC Couplings PVC To Steel Pipe Couplings Stainless Pipe Repair Bell Restraint Couplings High Pressure Pipe Couplings
Pipe Plugs Pneumatic Pipe Plug sectional large pipes Pipe Plugs Mechanical Packers Pipe Repair Internal
Heater Wraps Totes Heater Wraps DRUMS Heater Wraps PUMPS Heater Wraps TANKS Heater Traps CONCRETE Pipe Heater Wraps Drum Ovens 4 Barrel Heaters
BUILDING ENTRY PIPE SEALS
PUDDLE FLANGE EDPM PIPE SEALS
ELBOW CHECK VALVES
MANWAY HATCH COVERS
FLANGE ISOLATION KITS
MONOLITHIC ISOLATION JOINTS
FLAP VALVE HDPE - PUMP PRESSURE LINES
HDPE is resistant to most chemicals and is not subject to corrosion.
Flap Valves for pump pressure lines are used when large volumes of storm water need to be pumped out of containment structures. Flap valves prevent back flow through the pipe into the discharge lines.
WA-PWK Flap Valves are installed at pressure piping outfalls. Opening to allow pumping outflows and closing on pump shutdown to prevent flood water back flows.
WA-PWK flap valve units are equipped with venting valves for pump stop and run operations. The vent protects the flap door from drain back pressures.
WA-PWK models available for all pipe sizes: contact Westatlantic
The function of the air vent is not obvious during the time the pump is in operation. It only becomes clear when the pump stops.
As the pump stops, the flow reverses. In the very short time span between the pump stopping and the flap valve closing, the flow returning into the pipe can result in high pressures.
The vent prevents a vacuum formation by allowing air to enter the pipe through the air vent. As a result the valve closes slowly and in a controlled manner.
Pump Starts to Operate
When the pump starts up it compresses the air remaining in the pipe.
The compressed air leaves the pipe through the air vent.
The size of the vent pipe is approximately 10% to 15% of the flap valve bore.
Small flap valves up to 400 mm diameter are equipped with a threaded opening.
With larger diameters pipes the air vent will be equipped with a flange connection.
Contact us: Westatlantic Tech Corp, 902 455 4455
Flap Valves, HDPE Flap valves, HDPE, pipe outflows: USA and Canada, USA. Texas, TX, Houston, Florida, FL, Miami, Tampa, Naples. Louisiana, New York, NY, Illinois, IL, North Dakota, ND, Utah, UT, Salt Lake City, Iowa, IA, Ohio, OH, Michigan. New York, NY, Utah, Arkansas, Kentucky, KC, California, CA, Colorado, Denver. LA, Pennsylvania, PA. Wisconsin, WI. Canada, Ontario, Oakville, Toronto, London, Hamilton, Mississauga. Alberta, AB; Edmonton, British Colombia, BC; Vancouver, Victoria, Saskatchewan, SK; Regina, Manitoba MB; Winnipeg, Quebec, QC; Montreal, QC, Saskatchewan, Manitoba, Quebec, New Brunswick, NS, Newfoundland, NL.