Tianjin Wanji Valve Co., Ltd.
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+8618802222292
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giix-wjfm@163.com
Fixed Cone Valve
PRODUCT PARAMETERS
Description
Designed for high-pressure large-volume discharge in dams & hydropower stations, it dissipates kinetic energy via hollow jet flow to reduce downstream erosion damage.Built-in radial guide ribs suppress cavitation and vibration; available for atmospheric or submerged underwater discharge.It delivers up to 96% regulating accuracy and minimizes water-hammer risk, with robust construction for long-term trouble-free operation.Hydraulic, electric and manual actuation available; widely used for reservoir flood discharge & ecological flow regulation.
Fixed Cone Valve Technical Specifications
Fixed Cone Valve (Hollow Jet Valve)
General Product Specifications
| Parameter | Specification |
|---|---|
| Product Name | Fixed Cone Valve |
| Alternate Name | Hollow Jet Valve |
| Primary Function | Shut-off and regulating valve for large-flow, high-pressure water discharge |
| Typical Applications | Dam bottom outlets, reservoirs, hydropower stations, water treatment systems, ecological flow control |
| Nominal Diameter Range | DN250–DN2500 (other sizes available on request) |
| Discharge Type | Free discharge to atmosphere; partially or fully submerged discharge |
| Energy Dissipation Method | Forms a hollow conical jet to dissipate flow energy and reduce downstream damage |
| Control Range | Up to 96% |
| Closing Characteristic | Smooth closing operation |
| Main Components | Valve body, cylindrical gate sleeve, seals, actuator, deflector / diffuser |
| Valve Body Structure | Welded laminated carbon-steel cylinder with radial ribs and a central cone |
| Gate Structure | Concentric cylindrical gate with stainless-steel / bronze sliding surfaces |
| Sealing System | Back sealing ring and seat sealing ring for watertight shut-off |
| Actuation Options | Hydraulic actuator, electric actuator, or manual gearbox with handwheel |
| Working Pressure | Designed according to project requirements; maximum pressure shall not exceed the specified operating limit |
| Hydrostatic Body Test | 1.5 × working pressure |
| Seal Test | 1.1 × working pressure |
| Internal Coating | Sandblasted to SA2.5; zinc-rich primer system 100 μm + asphalt epoxy topcoat 100 μm; total 200 μm |
| External Coating | Sandblasted to SA2.5; epoxy primer 50 μm + two-component epoxy topcoat 75 μm; total 125 μm |
| Custom Design Note | Each valve is designed according to project conditions such as pressure, flow, operation frequency, and control requirements |
Note: For submerged discharge applications, a diffuser is required to ensure sufficient air admission and stable hydraulic performance.
FAQs
What types of valves does WANJI VALVE manufacture?
WANJI VALVE offers a range of industrial valves, including large-diameter hydropower ball valves, fixed cone valves, top-entry eccentric half ball valves, triple eccentric metal-seated butterfly valves, and other flow control valves for water and industrial applications.
What industries are your valves suitable for?
Our valves are designed for applications such as hydropower stations, dams, reservoirs, municipal water supply, wastewater treatment, and industrial pipeline systems. Product selection depends on the operating medium, pressure, flow rate, and project conditions.
What sizes are available for your large-diameter hydropower ball valves?
Our hydropower ball valve design documentation covers nominal diameters from DN600 to DN4200. Please provide your required size, operating pressure, and project specifications so our team can confirm a suitable technical solution.
What manufacturing capabilities does WANJI VALVE have?
Our manufacturing operations include mechanical machining, valve assembly, inspection, and testing. We focus on the production of large-diameter valves and engineered flow control products, with manufacturing processes adapted to different product designs and technical requirements.
Can your valves be manufactured according to international standards?
Our product documentation references standards such as API 6D, API 608, ASME B16.5, and ASME B16.47 for applicable valve designs and connections. Please specify the required standard when submitting an inquiry so we can confirm its applicability to your selected product.