ss 304 gate valve Description
Stainless steel 340 gate valves refer to gate valves made of 304/316L stainless steel, the '340' in the model number may be associated with a specific design standard or pressure class (e.g. Class 150/300), suitable for highly corrosive media or high pressure conditions, fluid shut-off57. High-pressure conditions of the fluid cut-off. The nominal diameters range from DN50 to DN600 (NPS 2 to 24) and are suitable for flanged or welded connections.
Core structural features
Gate and seal design:
Adopt wedge-type elastic gate or parallel double gate structure, sealing surface surfacing Stellite cobalt-based hard alloy, resistant to scouring, high temperature (≤ 550 ℃).
Combination of mandatory sealing and self-sealing, adapting to high-pressure differential (such as PN40 ~ PN160) and low temperature (-29 ℃) scenarios.
Drive and stem:
The valve stem is tempered and surface nitrided to resist corrosion and abrasion; it supports open or concealed stem design and is suitable for manual, pneumatic or electric actuators.
Performance Parameters and Standards
Pressure resistance grade:
Comply with GB/T12234-2007 standard, the highest pressure up to PN160 (Class 2500).
Medium resistance capacity:
Applicable media include water, steam, acid and alkali, sulfur-containing natural gas and other corrosive fluids.
Certification Requirements:
Passed API 598 sealing test, some models meet ISO 15848 micro-leakage certification.
ss 304 gate valve specification
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Application |
General |
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Place of Origin |
China |
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Henan |
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Power |
Electric |
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Temperature of Media |
Normal Temperature |
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Structure |
Gate |
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Customized support |
OEM |
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Product name |
SS304 Gate Valve |
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Size |
2in ,2 1/2in, 3in,4in, 5in,6in ,8in |
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Temperature |
Normal Temperature |
Our factory & quipment
Applications
Energy & Chemical:
Liquefied natural gas (LNG) storage and transport pipelines, high temperature and high pressure media cut-off in refineries.
Industrial Systems:
Thermal power station steam pipeline, chemical plant corrosive fluid control system.
Special working conditions:
Slurry pipeline containing solid particles, high viscosity fluid (such as asphalt) opening and closing control.
Selection recommendations
Seal type:
Metal hard seal is preferred for high temperature scenario, PTFE soft seal is available for low temperature or clean medium.
Actuator:
Large diameter (DN ≥ 300) recommended worm gear drive or electric actuator to reduce the operating torque.
Maintenance requirements:
Regularly check the valve stem lubrication and sealing surface wear to extend the service life.
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