• No mechanical parts
  • Stops the migration of dangerous sewer gases into living spaces or other occupied areas
  • Responds to very low inlet pressures
  • Self cleaning - minimal maintenance, completely smooth lower pipe.
  • Simple installation, even in existing pipes and chambers
  • Protects against flooding

The WaStop® low pressure check valve consists of two parts, the polyurethane sleeve and the pipe. The pipe is supplied with 304 stainless steel and is also available with 316 SS or plastic for specific applications. The sleeve simply folds up and out of the way with very little inlet pressure to allow the flow to pass through the valve.  Inversely the sleeve is capable of resisting several metres of pressure in the opposite direction.

Dimensions DN 110-1200 can be manufactured in plastic, with or without flange.

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Item #

Item Name

DN

Outside Diameter A

Lenght L

ws97std N/A WaStop® Stainless Steel N/A 100 N/A 97 N/A 220
ws101std N/A WaStop® Stainless Steel N/A 110 N/A 101 N/A 220
ws118std N/A WaStop® Stainless Steel N/A 125 N/A 118 N/A 250
ws146std N/A WaStop® Stainless Steel N/A 150 N/A 146 N/A 300
ws183std N/A WaStop® Stainless Steel N/A 200 N/A 183 N/A 400
ws193std N/A WaStop® Stainless Steel N/A 200 N/A 193 N/A 410
ws215std N/A WaStop® Stainless Steel N/A 225 N/A 215 N/A 450
ws230std N/A WaStop® Stainless Steel N/A 250 N/A 230 N/A 480
ws240std N/A WaStop® Stainless Steel N/A 250 N/A 240 N/A 520
ws290std N/A WaStop® Stainless Steel N/A 300 N/A 290 N/A 600
ws390std N/A WaStop® Stainless Steel N/A 400 N/A 390 N/A 750
ws440std N/A WaStop® Stainless Steel N/A 450 N/A 440 N/A 900
ws490std N/A WaStop® Stainless Steel N/A 500 N/A 490 N/A 900
ws590std N/A WaStop® Stainless Steel N/A 600 N/A 590 N/A 1200
ws690std N/A WaStop® Stainless Steel N/A 700 N/A 690 N/A 1300
ws790std N/A WaStop® Stainless Steel N/A 800 N/A 790 N/A 1500
ws885std N/A WaStop® Stainless Steel N/A 900 N/A 885 N/A 1700
ws985std N/A WaStop® Stainless Steel N/A 1000 N/A 985 N/A 1800
ws1185std N/A WaStop® Stainless Steel N/A 1200 N/A 1185 N/A 2250
ws75pl N/A WaStop® Plastic N/A 75 N/A 75 N/A 125
ws110pI N/A WaStop® Plastic N/A 110 N/A 110 N/A 220
ws160pl N/A WaStop® Plastic N/A 160 N/A 160 N/A 300
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