Polymer Check Valve
The Vispar polymer check valve is manufactured from two high‑quality materials—polypropylene (PP) and polyacetal (POM)—and is considered one of our most durable and reliable products. This check valve is used in semi‑mobile classic sprinkler irrigation systems and remains fixed on the ground throughout the irrigation period.
As part of sprinkler irrigation equipment, the polymer check valve is sometimes referred to as a plastic check valve. It is one of the essential components of any sprinkler irrigation system. Made from polypropylene, it offers excellent resistance to sunlight and chemicals, with a nominal pressure rating of 6 bar. The pressure drop across this PP check valve is low, and its internal components are replaceable.
To purchase the polymer check valve, you can contact our sales team.
Technical Specifications of the Polymer Check Valve
The body of polymer check valves is made from two high‑performance polymers—polyacetal (POM) and polypropylene (PP). These materials provide excellent resistance to moisture and temperature fluctuations, abrasion, UV radiation, and
chemical corrosion, making them a highly reliable alternative to traditional metal valve bodies.
Other key specifications you should know before purchasing a polymer check valve include:
- Nominal Pressure: 6 bar
- Low Pressure Drop: Designed for minimal hydraulic loss
- Chemical and UV Resistance: Suitable for harsh outdoor and agricultural environments
- Replaceable Components: Internal parts can be serviced or replaced
- Certified Quality: Approved by the Water and Soil Deputy of the Ministry of Agriculture
- Available Sizes: Produced in 1″, 1½”, and 2″ sizes with replaceable components, ensuring optimal performance up to 6 bar with minimal hydraulic pressure loss
Applications of the Polymer Check Valve
The polymer check valve is one of the most widely used components in sprinkler irrigation systems. In classic semi‑mobile sprinkler irrigation setups, the Vispar check valve enables quick and easy connection of the sprinkler riser to the lateral (sub‑main pipe) and allows fast water intake from the lateral line.
By using the 6‑bar polymer check valve, farmers can efficiently transfer water into sprinkler risers and direct it from the polymer riser to the sprinkler nozzle. This ensures proper irrigation, and once the valve is closed, the water flow stops immediately.
To learn more about authorized our check valve distributors in your city, you may contact our sales experts through the Contact Us page.
How the Polymer Check Valve Works
The operation of the bushing, O‑ring, and sealing pack in the polymer check valve is precisely engineered to prevent leakage and water loss when the valve is either open or closed. This optimized sealing mechanism ensures reliable performance throughout the irrigation cycle.
The use of stainless steel in the check valve spring provides excellent strength, high elasticity, and outstanding corrosion resistance under various water conditions. This enhances the long‑term durability and consistent performance of the valve in agricultural environments.
It is important to note that when the check valve is not in use, the cap should remain closed to prevent soil particles and debris from entering the valve and causing potential damage.