Flanged check valve

Flanged check valve - this is a direct-acting protective pipeline fitting that allows flow in only one direction.

The flow passage in the check valve is automatically closed by the weight of the disc, the spring force, or a lever-weight mechanism. Depending on the flow direction, the pressure difference between the valve's inlet and outlet overcomes the disc's holding force and opens the passage, or, conversely, presses the disc further against the seat.

Working media

Flanged check valves are installed on pipelines that transport water, steam, compressed air, wastewater, and viscous media. All check valves in our catalog can be used for water, but for use with other media, please consult the suppliers.

Applications

The locations for installing check valves are determined by regulatory requirements or based on the conditions of the technological process. In building engineering systems, a check valve should be installed:

• On the pressure pipeline of each parallel-installed pump.
• On the water supply pipeline after each water meter.
• On the bypass between the supply and return pipelines in the heat point, connected by a dependent scheme with a mixing heat carrier.

Advantages

• High reliability
• Repairable
• No maintenance required
• Full-bore design possible
• Wide range of operating parameters
• Can be used for wastewater and viscous media

Disadvantages

• High cost
• Heavy weight
• Larger connection size
• Check valves with a non-full-bore design require hydraulic calculation checks, as they create high pressure losses.