How to Choose an Elastomer for a Rubber Duckbill Check Valve

Flexible rubber diaphragm

The design and construction of a duck bill check valve can greatly affect the life of the valve and the types of matters that it can handle. The elastomer used to make this type of valve plays an important role in how long it will last and function properly. There are several factors to consider when choosing an elastomer for this type of valve.

Duckbill check valves are designed to allow for a forward flow and prevent backflow. These valves are made of rubber or synthetic elastomer and have a duck-like design. They automatically open when pressure increases upstream, and close when downstream pressure drops below the cracking pressure. Duckbill valves are often used in medical applications.


Non-mechanical rubber duckbill check valves are used to control the flow of fluids. They can be installed inside pipes. Before installation, ensure that the valve is lubricated and installed in a vertical position. Check that the outlet is upwards rather than downwards, and that the flanges are positioned in the correct pattern. If the flanges are not installed properly, the valve may rotate.

A duckbill check valve works by permitting or blocking flow, depending on the pressure of water coming in. As the pressure increases, the valve opens further to let the flow through. Then, when backpressure is removed, the valve will close, preventing backflow. The duckbill check valve will function even if it is worn out, because it will still seal around trapped solids. This feature helps duckbill check valves be more effective than flap gates. Moreover, they do not get damaged by rust, corrosion, or ultraviolet rays, which can cause other types of valves to malfunction.

Requires no maintenance

TheĀ find out here now No Maintenance Strategy involves the random and unplanned maintenance of assets. The most common triggers for this kind of maintenance are asset breakdowns and asset requirements. However, it is also possible to use time and events as triggers. For example, a news report about a fire caused by a similar asset can lead to a maintenance inspection.

Does not slam when closed

The duckbill check valve is an important safety valve in wastewater and other water-based applications. It closes when external pressure is higher than internal pressure. It can function in water depths of up to 8 m and is effective in protecting against backflow. These valves are available in various designs and are made from natural rubber. They can be installed on a variety of pipe types, including corrugated, steel, PVC, and cement.

The duckbill check valve was originally introduced in the 1980s to replace swing/flap valves, but has since become a popular option in industrial applications. The valve’s name is derived from the shape of its flaps, which resemble a duck’s bill. The flaps open and close according to the flow, and a soft rubber diaphragm works to prevent backflow. When the flow is reduced or eliminated, the flaps revert to their closed position.

Environmentally friendly

The Environmentally Friendly Rubber Duckbill Check Valve is an effective and affordable way to prevent backflow and protect the environment. These check valves are easy to install and remove and can be custom-built for your application. The rubber construction prevents the entry of suspended or trapped solids and ensures trouble-free backflow prevention. Moreover, this valve has no moving parts, which reduces the maintenance costs. It also has the lowest head loss of all check valves.

Rubber duckbill check valves are available in various styles, including flanged and slip-on. The latter type is suitable for installation in vertical and horizontal pipelines.