PP NRV Solid Flange ball Valve

Key Features and Specifications

These valves are primarily used for their robust material properties and specific function within a pipeline system.

Function: An NRV (Non-Return Valve), also known as a check or one-way valve, operates automatically based on fluid pressure. When fluid flows in the desired direction, it pushes open an internal mechanism (typically a ball), allowing flow. When flow stops or reverses, the mechanism returns to its seat, sealing the valve and preventing backflow.
Material: It is constructed from Polypropylene (PP), a durable plastic known for its excellent resistance to corrosion, chemicals, and acids, making it suitable for aggressive industrial environments.
Connection End: The "solid flange" connection means the valve has a flanged end that is bolted between matching pipe flanges as per standards like ANSI B 16.5 (150#) or BS 10, ensuring secure and straightforward installation.
Design: The internal design is often a ball type with a soft seat for effective sealing and low-pressure drop.
Applications: They are widely used in chemical processing plants, water treatment systems, irrigation networks, and other industrial pipelines where backflow prevention is essential.
Durability: The valve is lightweight yet robust, often UV stabilized for outdoor use, and requires minimal maintenance for a long service life.
Pressure & Temperature: Typical operating parameters include pressure ratings around PN10 (~10 kg/cm²) and maximum working temperatures consistently up to 50°C to 80°C, depending on the specific manufacturer's design.