Design features
automatic reverse-flow prevention engineered for power-plant transients
Final dimensions, materials, ratings and documentation depend on the approved configuration.
Power station valves / LIANGGU
Power Station Check Valve
This model is a check valve distinguished by automatic reverse-flow prevention engineered for power-plant transients. For a project quotation, share the required size, pressure designation, materials, seating, connections and quantity. Final suitability is confirmed against the approved specification.
PRODUCT DETAILS
Understand this valve.
Working principle
forward differential pressure opens the closure element; falling or reversing flow returns it toward the seat; closing behavior depends on line velocity, orientation, inertia, spring force, and the system transient; verify orientation and pressure surge
Typical applications
boiler feed pumps, condensate pumps, heater systems, extraction lines, and utility water circuits
Selection priorities
closure response, orientation, pressure surge, disc travel, maintenance access, minimum flow, and reverse velocity
SPECIFICATION REVIEW
Define the required configuration.
Manufacturer-listed options remain subject to the selected design and service. They are not fixed specifications for every configuration.
| Size / DN or NPS | Project-specific — include in your RFQ |
|---|---|
| Pressure designation | Project-specific — include in your RFQ |
| Common material options | Manufacturer optionCarbon, low-alloy, or stainless steel selected from the approved pressure-temperature basis, thermal cycling, weldability, and plant material specification |
| End connection & standard | Manufacturer optionButt-welded, socket-welded, threaded, or flanged ends only within the selected product design and piping-class scope |
| Actuation & accessories | Manufacturer optionSelf-acting; no external actuator unless the approved design includes assisted closure or position indication |
| Design standards | Manufacturer optionAPI 594 may apply to flanged, lug, wafer, or butt-welded check valves; API 6D or ISO 14313 may apply to qualifying pipeline-valve service |
| Lead time & documentation | Confirmed in the written quotation |
Other materials & project configurations
Listed materials are common options, not an exhaustive range. Share the required grade and service conditions so we can review suitability, manufacturing feasibility and availability.
Catalogue information supports the enquiry. Approved technical documents define the final supply.
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