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Check valves are automatic non-return valves. Forward flow opens the closure element; reverse flow causes it to close. The current Trekre range includes swing, lift, wafer and foot-valve designs, with product-specific flanged and wafer connections for industrial systems.

Trekre Check Valves Series

What Is a Check Valve?

A check valve is an automatic non-return valve. Forward flow opens its closure element; reverse flow causes closure to reduce or prevent reverse flow. Check valves generally do not require an external actuator.

Check Valve Types Available

Swing, Lift and Wafer Check Valve Designs

The current category includes swing, lift, and wafer designs. These are selected according to piping layout, installation space, flow conditions, connection, closing characteristics, size, applicable standard, and project specification. No design is universally better than another.

Connection and Installation Options

Current product titles identify flanged swing, lift, and foot valves, plus wafer check valves. Permitted installation orientation depends on the check valve design and product series. Confirm flow direction, orientation, and connection requirements with the selected product drawing.

How to Select a Check Valve

  • Flow direction and minimum/normal flow condition
  • Pressure, temperature, medium, and line size
  • Installation orientation and available space
  • Connection, body/trim material, and closing characteristics
  • Potential pressure-surge or water-hammer considerations
  • Applicable standard and product-specific documentation

Typical Applications

Check valves are used where reverse flow needs to be considered in an industrial piping system. Selection depends on the actual medium, flow conditions, installation arrangement, materials, and product design.

Standards and Testing

Current product titles reference ANSI and JIS configurations. Design, connection and testing standards vary by check valve design and order specification. See About Us and Valve Technical Knowledge.

Check Valve Selection Considerations

Consider closing response and potential pressure surge as part of the project review. Do not assume any check valve eliminates water hammer, prevents all reverse flow, or has a common leakage performance.

FAQ

What is a check valve?

A check valve is an automatic valve intended to reduce or prevent reverse flow.

What is the difference between swing and wafer check valves?

Select based on layout, space, flow conditions, size, standard, and the product specification.

How do I select a check valve?

Provide medium, pressure, temperature, line size, flow direction, orientation, connection, materials, standard, and documentation.

Can check valves be installed vertically?

Permitted orientation depends on the check valve design and product series.

What causes check valve slam?

Closing behaviour depends on flow conditions, system design, and valve construction. Evaluate surge risk for the installation.

What is the difference between a check valve and a foot valve?

A foot valve is a product-specific check-valve configuration used at an intake or suction point where the selected design is appropriate.