WaStop - Stainless Steel Check Valves
The patented Wastop® inline check valve has been the innovator and industry leader since its inception. Wastop excels at preventing backflow, flooding, and sewage odor spread in pipe networks. It can be inserted into almost any existing pipe. Unlike any other check valve available today, Wastop® can be mounted horizontally, vertically, on an inlet, outlet, in a chamber, or utilizing flanges. Installation is a breeze!
For over 14 years Wastop has been leading with the lowest headloss in the industry. The secret to Wastop®’s effectiveness is its specialized Memory Membrane, inserted inside either stainless steel or pvc pipes depending on the application. The Memory Membrane is constructed of a specially formulated blend of elastomer which gives it exceptional shape retention and chemical resistance. This ensures Wastop® always opens when needed, but then immediately seals to prevent backflow.
WaStop Stainless Steel series can be used in sewer and storm/surface water applications as well as for stopping odour escaping from combined sewers. The stainless steel series is a complete range from DN 100mm (NPS 4″) to DN 1800mm (NPS 72″). The WaStop Stainless range fits inside the existing pipe. For more information regarding installation please see below.
How it works
The revolutionary patented and certified Wastop® inline check valve can be installed in minutes in a pipeline or chamber. It can be installed either horizontally or vertically and either at an inlet or outlet. WaStop® can be installed to prevent backflow in all cases.
Flow in the normal direction causes a slight pressure buildup against the membrane which in turn causes the membrane to open just enough to allow the flow to pass unhindered. When backflow occurs the membrane fills with water or gas and acts as a stopper blocking all back flow in the pipe or drain. WaStop® check valve can be designed to withstand up to 12 meters back pressure.
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- Installed for over 10 years worldwide with 100% satisfaction
- Superior construction materials
- Extremely low head loss
- Low life cycle cost and easy installation
- No moving parts - virtually maintenance-free
- Many dimensions 75 - 1800 mm std & non-standard pipes
- Stops liquids, gases, odours, insects and small animals
- Many installation options - vertical to horizontal
- The ORIGINAL inline check valve - leading development
WaStop® check valves are designed to fit inside standard dimension pipes of most materials. The inner diameter of the existing pipe is important for determining the correct WaStop for your applications. A graduted seal is used to ensure the WaStop fits tightly giving each WaStop dimension a wide range of pipes into which it fits. The standard WaStop is manufactured using stainless steel (EN1.4301/AISI 304). WaStop® can be customised to fit your specifications. Housing: Stainless steel SS2333 (EN.1.4301). Stainless Steel 2346 (EN.1.4404) can be ordered at extra cost.