Flat Gate Valve with Diversion Hole
Nominal Diameter: 2" ~ 36"
Nominal Pressure: 150 ~ 2500 lb
Mediums: Water, steam, oil, gas, chemicals, slurry
Temperature Range: ≤ 450°C
Product Overview
The Flat Gate Valve with Diversion Hole is an advanced industrial valve designed for systems requiring controlled fluid flow during opening and closing, minimizing water hammer and pressure surge in pipelines. The diversion hole (bypass or pressure-balancing hole) allows a small amount of fluid to flow before full opening, ensuring smooth operation in high-pressure or high-temperature pipelines.
Constructed with high-quality carbon steel, alloy steel, or stainless steel, this valve combines the flat gate sealing design with a diversion hole feature, providing reliable shut-off, excellent wear resistance, and reduced impact on the system during operation.
This valve is suitable for power plants, petrochemical facilities, marine applications, and industrial piping systems. It is compliant with international standards including ASME, ANSI, API, and can be fully customized to meet regional and project-specific requirements.
We provide full OEM/ODM services tailored for industrial projects:
| Customization Item | Options / Scope |
|---|---|
| Valve Size | DN15 – DN1200 (½" – 48") |
| Pressure Rating | ANSI/ASME Class 150–2500 |
| Body & Trim Materials | Carbon Steel, Alloy Steel, Stainless Steel, Duplex/ Super Duplex |
| Seat Type | Metal Seat, Soft Seal, Hybrid Designs |
| Diversion Hole Size | Customized per flow/pressure requirements |
| End Connection | RF, RTJ, FF, BW, SW |
| Actuation | Manual, Gear, Electric, Pneumatic, Hydraulic |
| Coating & Finish | Epoxy, High-Temp Paint, C5-M, Custom Paint |
| Documentation | MTC EN10204 3.1, PMI, RT, UT, Third-Party Inspection |
| Branding | Custom Logo & Nameplate |
| Packaging | Export-standard packaging, anti-corrosion protection |
OEM Services Include:
Parameter Specifications
| Parameter | Specification |
|---|---|
| Product Type | Flat Gate Valve with Diversion Hole |
| Valve Design | Flat Gate, Full Bore, Diversion Hole |
| Connection Type | Flanged, Butt Weld, Socket Weld |
| Size Range | DN15 – DN1200 (½" – 48") |
| Pressure Rating | ANSI/ASME Class 150–2500 |
| Design Standard | ASME B16.34, API 600, BS 1414 |
| Face-to-Face Standard | ASME B16.10 |
| Flange Standard | ASME B16.5, ASME B16.47 |
| Testing Standard | API 598, ISO 5208 |
| Body Materials | WCB, WC6, WC9, C5, C12A, CF8, CF8M, Duplex Stainless Steel |
| Trim Materials | 13Cr, F6a, Stellite, SS304, SS316 |
| Operating Temperature | Up to 600°C (1112°F) |
| Applicable Media | Steam, Water, Oil, Gas, Thermal Oil, Corrosive & Non-Corrosive Fluids |
| Sealing Type | Flat Metal-to-Metal, Optional Soft Seal |
| Diversion Hole | Reduces water hammer; size customizable |
| Operation | Manual, Gear, Electric, Pneumatic |
| Leakage Class | API 598, Class IV / V |
Industry Applications
Material customization plan
Customized 316L stainless steel valves forGerman chemical enterprises. Resistant tostrong corrosion, suitable for their acidicmedium transportation systems, with aservice life extended to over 8 years.
Structural optimization design
For the Saudi desert project, the valve stemsealing structure was changed to a doublebellows design to address the leakage issuein the high-temperature and dustyenvironment, and it was highly recognizedby the customers.
Interface standard adaptation
Customized API 600 standard valves for acertain company in the United States. Theflange size is fully compatible with ANSIB16.5, ensuring zero error during on-siteinstallation and reducing the constructionperiod by 30%.
