Design features
hydraulic actuation for quick-closing duty, with the energy-storage arrangement and closing characteristics subject to confirmation for the selected design
Final dimensions, materials, ratings and documentation depend on the approved configuration.
Butterfly valves / LIANGGU
Hydraulic Quick-Closing Butterfly Valve
This model is a hydraulically actuated butterfly valve for quick-closing duty. The energy-storage arrangement, closing curve and fail-safe behavior require confirmation for the selected design. 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
a shaft rotates the disc through a quarter turn; seat geometry, differential pressure, flow direction, line velocity, cycle frequency, and actuator torque determine shutoff and control performance; verify trip logic and water-hammer limit
Typical applications
turbine inlet protection, pump discharge, hydropower, cooling-water systems, and emergency isolation
Selection priorities
accumulator capacity, trip logic, water-hammer limit, fail-safe mode, reset procedure, proof testing, and closing curve
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 steel, low-temperature steel, stainless steel, alloy steel, or another approved alloy after service and fabrication review |
| End connection & standard | Manufacturer optionFlanged or butt-welded ends matched to the approved piping class and selected product design |
| Actuation & accessories | Manufacturer optionHydraulic actuation; the energy-storage arrangement, trip and reset method, closing curve, damping and fail-safe behavior must be confirmed for the selected design and project duty. |
| Design standards | Manufacturer optionAPI 609 may apply to double-flanged, lug, or wafer butterfly configurations; testing, pressure design, interfaces, and actuator requirements must be specified separately |
| 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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