
API Standard Flat Gate Valve
The API Standard Flat Gate Valve is a slab gate valve that complies with API standards.
- Product Introduction
Product Introduction
The API Standard Flat Gate Valve is a slab gate valve that complies with API standards. Manufactured from cast steel, stainless steel, or forged steel, it features a full-bore design, low flow resistance, and superior sealing performance, making it widely utilized in petroleum, natural gas, refining, and long-distance pipeline systems.

Material for main parts
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Material for main parts |
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Part Name |
ASTM Materia |
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Body |
A216 WCB |
A351 CF8M |
A217 WC6 |
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Cover |
A105 |
A182-F316 |
A182-F11 |
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Gate |
A182-F6a |
A182-F316 |
A182-F6a+HF |
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Stem |
A276-410 |
A276-316 |
A276-410 |
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Seat |
A276-410 |
A182-F316 |
A276-410+HF |
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Gasket |
Graphite+304 |
Graphite+316 |
Graphite+304 |
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Cap bolt |
A193-B7 |
A193-B8M |
A193-B16 |
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Packing |
Graphite |
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Packing sleeve |
A276-410 |
A276-316 |
A276-410 |
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Packing plate |
A105 |
A182-F316 |
A182-F11 |
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Union bolt pin |
A276-410 |
A276-316 |
A276-410 |
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Live bolt |
A193-B7 |
A193-B8M |
A193-B16 |
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Union nut |
A194-2H |
A194-8M |
A194-2H |
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Stem nut |
A276-410 |
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Handwheel |
Malleable iron |
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Hand wheel nut |
Carbon steel |
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Application Scenarios
Oil Pipelines: Used for start-up, shut-down, and control within crude oil transmission systems.
Natural Gas Pipelines: Used for high-pressure gas transmission and emergency shut-off applications.
Refining & Petrochemical Systems: Used for the isolation of high-temperature and high-pressure media.
Chemical Industry: Used for the control of corrosive fluid transmission.
Power Generation Systems: Used in steam lines and industrial circulation piping.
Offshore Platforms: Used in offshore oil and gas transmission systems.
Long-Distance Pipelines: Used in large-diameter main pipelines to facilitate low-resistance transmission.
Production Capacity
Production Facilities
Equipped with CNC machining centers, CNC lathes, automated welding systems, and valve assembly lines.
Equipped with pressure testing, spectral analysis, and non-destructive testing equipment.
Manufacturing Capabilities
Utilizes precision casting, forging, and hard-facing (hard-seal overlay welding) processes.
Surface treatments include sandblasting, anti-corrosion coating, and rust prevention.
Production Capacity
Supports mass production for sizes ranging from DN50 to DN1200.
Ensures stable supply and is capable of fulfilling large-scale project orders.
Offers short lead times for standard products.
OEM / ODM Capabilities
Supports customization of materials, pressure ratings, connection types, and actuation methods.
Supports OEM customization for logos, nameplates, and packaging.
Quality System
Manufactures in strict compliance with API, ANSI, and ISO standards.
Implements comprehensive quality inspection throughout the entire production process; every valve undergoes pressure and seal testing prior to leaving the factory.
FAQ
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