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Founded in 2010 and headquartered in Anfeng Industrial Zone, Yongjia, Zhejiang, SUNAY has three manufacturing subsidiaries with a registered capital of 10.8 million RMB. Our products—including API 6D pipeline ball valves, gate, globe, check, plug valves, and API 609 butterfly valves- offer complete fluid control solutions for petrochemical, LNG, nuclear, marine, aerospace, and other industries.
Comprehensive Product Range
We offer 6 major valve types with 1,000+ specifications, including patented high-temperature, high-pressure, and particle-resistant valves.
Advanced Technology
Equipped with CAD design, 3D simulation, and professional testing platforms for continuous product optimization.
Strict Quality Management
International-standard production, ERP and SAP systems, and precision casting ensure reliable, standardized manufacturing.
Certified and Trusted
Holds ISO9001, ISO14001, ISO45001, CE, and AAA credit certifications; supplier to major national and international enterprises.
Gate valves utilize a gate or wedge-shaped valve disc to start or stop fluid flow, achieving full opening or full closing of pipelines. They are widely used in industrial, petrochemical, power, water, and marine systems.
Full Bore Flow
Provides straight-through flow for minimal pressure drop.
Reliable Shutoff
Designed for complete on/off isolation in pipelines.
High Pressure and Temperature Capacity
Handles high-pressure and high-temperature media better than many other valve types.
Versatile Media Handling
Gate valves can be used with water, oil, gas, steam, slurries, and other fluids.
Solid Wedge Gate Valve – Single-piece disc, suitable for general industrial applications, but may jam under extreme temperature or pipe stress.
Flexible Wedge Gate Valve – Disc with grooves or slots adapts to temperature changes and piping stress, reducing the risk of sticking.
Split Wedge Gate Valve – Two-piece disc design transfers stem force evenly, ideal for high temperature and high-pressure conditions.
Slab Gate Valve – A flat disc sliding between two parallel seats, offers full-bore flow and is commonly used in oil and gas pipelines.
Knife Gate Valve – Sharp-edged disc cuts through thick or viscous media, widely applied in wastewater and slurry systems.
Outside Stem Rising Gate Valve (OS&Y) – Stem rises when opening, making it easy to observe valve position; ideal for high-pressure industrial systems.
Inside Screw Non-Rising Stem Gate Valve (NRS) – Stem does not rise, suitable for space-limited or underground installations.
Standard Seal Gate Valve – Conventional seal design, simple structure, and cost-effective.
Bellows Seal Gate Valve – Stem isolated from the medium with bellows, providing tight sealing for high-temperature or corrosive fluids.
Ceramic Lined Gate Valve – Valve body or disc lined with ceramic for wear and corrosion resistance, ideal for slurry or abrasive media.
Oil and Gas
Controlling pipelines carrying crude oil, natural gas, and refined products.
Water Treatment and Supply
Managing potable water, wastewater, and industrial water systems.
Power Plants
Regulating steam, cooling water, and feedwater lines.
Marine and Shipbuilding
Handling seawater, ballast, and cooling systems.
Chemical and Corrosive Fluids
Safely isolating aggressive or high-temperature chemical media.
Mining and Industrial Processing
Controlling slurry, abrasive fluids, and other heavy-duty pipelines.
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Option |
Customizable Details |
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Material |
Stainless steel, carbon steel, alloy steel, brass, bronze, PVC, and corrosion-resistant alloys |
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Size |
Standard & non-standard diameters |
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Pressure |
low to high-pressure ratings |
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Gate Disc |
Solid, flexible, split, slab, or knife gate types |
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Sealing |
Standard, bellows, or ceramic seals for high temperature, corrosive, or abrasive media |
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Actuation |
Manual, electric, pneumatic, or hydraulic |
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Special Features |
Anti-corrosion, high-temperature resistance, abrasion resistance, or zero-leakage solutions |
As one of the most professional gate valve manufacturers and suppliers in China, we offer a wide range of valves with superior quality. Please feel free to wholesale high quality gate valve at competitive price from our factory. We also accept customized orders.
Bellow Seal Gate Valve, Inside Screw Non rising Stem Type Gate Valve, Outside Stem Type Gate Valve(0/10)
