Rubber Duckbill Check Valves are an efficient and economical way to control back pressure from sewage treatment plants, outfalls and other applications. They are designed to handle a variety of fluids and can be manufactured in a range of materials, designs and sizes to meet your specific requirements.
A rubber duckbill check valve can be used in a number of applications, such as sewage treatment plants, wastewater outfalls and stormwater drains. They are a simple and reliable alternative to flap type check valves that may seize, rust, or bind with obstructions such as debris.
They are also great for use on coastal / beach outfalls, river outfalls, and in floodplains. They are self-clearing, seal tight and will not bind with large obstructions or clog like traditional flap valves.
This makes them an ideal choice for use as a tidal valve on ocean or river outfalls and in floodplains, saving sewage systems and treatment plants money on costly maintenance repairs. They also offer quiet operation and low opening pressure which can deter unauthorised access to outfalls.
There are many different types of check valves available, from ball and spring check valves to diaphragm style check valves. All have their benefits, but it is important to specify the correct valve for your application.
These types of check valves can be a costly investment in some cases, so it is worth taking the time to select the best one for your application. The most effective option will depend on a wide range of factors, including the nature and volume of liquids in use.
Specify the material:
The most common and widely used duckbill check valve is made from natural or neoprene rubber. The rubber material ensures the valves are robust and can withstand high abrasion and wear over long periods of use.
Depending on the type of rubber duckbill check valve you need, you can choose from slip on or flanged versions to suit your needs. Slip on duckbill check valves are easy to install and can be slipped over the end of the pipe, secured by tightening a few fasteners.
If the valve is a flanged version, you will need to fit it onto a headwall or pipe flange and then fasten it up. The flanged valve will then act as a gasket between the two mating flanges. Make sure that the flanges are the same size and the pipes are in the right position before you start installing them.
When lubricating the rubber duckbill check valve before installation, you can also help to protect it from damage during the process. This is particularly important if you are fitting the flanged model.
Measure the section of the pipe that the rubber duckbill check valve will fit to, and mark it with a permanent marker so you know where it should slide over the end of the pipe. Once you have done this, lubricate the inside of the rubber and insert it into the pipe where you have marked.