Design features
a pressure-seal bonnet with internal pressure supporting gasket compression
Final dimensions, materials, ratings and documentation depend on the approved configuration.
Gate valves / LIANGGU
High Pressure Self-Sealing Gate Valve
This model is a gate valve distinguished by a pressure-seal bonnet with internal pressure supporting gasket compression. 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 stem moves a wedge or parallel gate clear of the bore for isolation; the valve should normally be fully open or fully closed, not used as a routine throttling device; verify stem thrust and warm-up practice
Typical applications
high-pressure steam, boiler feedwater, power auxiliaries, and severe thermal services
Selection priorities
body material, stem thrust, warm-up practice, inspection access, pressure-temperature envelope, and bonnet sealing geometry
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 optionButt-welded, socket-welded, threaded, or flanged ends only within the selected product design and piping-class scope |
| Actuation & accessories | Manufacturer optionManual, geared, electric, pneumatic, or hydraulic operation only where the selected design and duty support it |
| Design standards | Manufacturer optionThe applicable product standard, pressure-design basis, testing requirements and piping interfaces must be confirmed for the selected pressure-seal design. |
| 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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