Wastop Backflow Valve

A Wastop backflow valve is a highly effective way to stop water backflow in pipes. Its patented Memory Membrane is a specially formulated elastomer that’s inserted inside pvc or stainless steel pipes. It has exceptional chemical resistance and shape retention. This membrane ensures that Wastop(r) backflow valves open only when necessary and seal instantly to prevent backflow.


The WaStop backflow valve is highly versatile, providing a wide range of applications. It is capable of preventing backflow, flooding, and sewage odor. It can be installed in virtually any pipe. The valve can be installed horizontally or vertically and uses flanges to attach to an inlet or outlet pipe. Once installed, the valve does not allow backflow and is easy to operate.

The spring check valve is versatile and ideal for many applications in water pipelines. It provides reliable backflow prevention while reducing the potential for system downtime or contamination. It can also help relieve pressure on the pipeline for proper system operation.

Easy to install

The Easy to install Wastop backflow valve is a simple, yet highly effective way to prevent flooding, sewage odors, and backflow from sewer systems. It can be installed in either plastic or stainless steel pipes. The valve’s elastomer sleeve is specially formulated for excellent shape retention and chemical resistance. The sleeve is designed to withstand several meters of pressure in the opposite direction, yet it closes immediately to prevent backflow from entering.

The unique patented construction of the Wastop prevents backflow from sewers. It also prevents flooding, odours, and other harmful contaminants from affecting people’s health and property. And it doesn’t need electricity or constant maintenance to operate. Moreover, the valve’s construction prevents infiltration of a pipeline by small animals, insects, and flotsam.

Environmentally friendly

The WaStop backflow valve is a simple but effective way to prevent backflow. It is made of a flexible membrane that opens when forward flow moves under it and closes when reverse flow fills it. It is available in a variety of sizes ranging from 3 inches to 72 inches. It complements other backflow valves such as the J&S HedFlex check valve, which is the exclusive distributor of WaStop in North America.

A backflow valve is an important safety measure that prevents flooding in the event of backflow. Backflow occurs when rainwater backs up into the stormwater pipe network during high tide, blocking it from draining. Nor’easter winds can also amplify the effect of tidal flooding by forcing tide water up the stormwater pipe network, causing more severe flooding. When installing a backflow valve, be sure to use a system that promotes solids passage.


The Wastop backflow valve is designed to prevent backflow. It uses a specially formulated Memory Membrane that is inserted into pvc and stainless steel pipes. This check membrane provides excellent chemical and shape retention. This unique feature ensures that the Wastop opens when it is needed and seals instantly to prevent backflow.

Its simple construction makes it easy to install and maintain. It comprises a sleeve made of elastomer and a pipe made of plastic or stainless steel. The sleeve has a special polymer blend for excellent chemical resistance and shape retention. The sleeve is designed to withstand pressures of several meters in the opposite direction. The pressure builds up as water flows into the inlet side of the valve.