·Butterfly Valve
TRI-CHECK Heavy-Duty Metal-Seated Check Valve
Zwick TRI-CHECK is a triple-offset check valve built on the same cone-in-cone geometry as the TRI-CON butterfly valve. Virtually friction-free opening and closing, a laminated seal ring on a self-centering floating disc, and an adjustable hydraulic damper with counterweight deliver zero-leakage check performance and water-hammer protection — proven for two decades as an ideal pump-protection valve.
Key Benefits
- 01Zero-leakage reverse sealing based on proven TRI-CON triple-offset geometry
- 02Hydraulic damper mitigates pressure surges and water-hammer during reverse flow
- 03Smooth soft-close in the final degrees of travel protects sealing parts
- 04Counterweight adjustable on-site to match installation orientation and process
- 05Can function as a combined check + isolating valve or with power-assisted actuation
Technical Features
- 01Triple-offset cone-in-cone geometry inherited from the TRI-CON series
- 02Statically held laminated seal ring on a floating, self-centering disc
- 03Hydraulic damper with adjustable closing rate
- 04Counterweight adjustable to installation orientation
- 05Non-parallel seat design reduces fluid-dynamic resistance
- 06Reduced disc travel for faster open response to forward flow
- 07EFD-simulation-optimized hydrodynamic design
- 08Power-assisted opening/closing option
- 09Combined check and isolation valve configuration available
Applications
- Single and multiple pump discharge protection
- Water-hammer-prone piping systems
- Critical process isolation requiring zero reverse leakage
- Combined check-and-isolation valve duty in a single body
- Long-service-life non-return applications in chemical and oil and gas piping
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