Specification
ANSI 1500LBS Forged Steel Manual High-Pressure Self-Sealing Welded Gate Valve
I. Product Overview: Precision Interception for High-Pressure Applications
Newway’s ANSI 1500LBS forged steel manual high-pressure self-sealing welded gate valve, designed to ASME B16.34 standards, uses A105 forged carbon steel or 316 stainless steel, developed for high-pressure pipeline systems in petroleum, chemical, and power industries. The valve employs a self-sealing structure that uses medium pressure to dynamically seal the bonnet and body, combined with a bevel gear drive mechanism, maintaining zero-leakage interception performance under Class 1500 (PN250) high-pressure conditions. Its core advantages lie in the high-strength impact resistance of forged steel and the reliability of the self-sealing structure in high-pressure scenarios, suitable for media control (water, steam, oil) at -29℃~425℃.
II. Key Attribute Parameters: Comprehensive Technical Specifications
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Parameter Category |
Technical Indicators |
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Nominal Diameter Range |
DN50~DN600 (NPS2″~NPS24″), supporting raised face flanges, ring joint faces, and butt weld ends |
|
Pressure Class |
Class 1500 (PN250), compatible with Class 600/900/2500 pressure systems |
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Execution Standards |
Design: API 600, ASME B16.34; Face-to-Face: ANSI B16.10; Welding: ANSI B16.25 |
|
Material System |
– Body/bonnet: A105 forged carbon steel (≤425℃), F316 stainless steel (≤200℃); |
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Connection Types |
Butt Weld (BW), Raised Face (RF) flanges, Ring Type Joint (RTJ), compliant with ANSI B16.5 |
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Operation Mode |
Manual bevel gear drive, customizable with electric/pneumatic actuators |
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Applicable Media |
Water, steam, oil products, natural gas, and non-corrosive industrial fluids |
Product Overview
III. Core Features: Self-Sealing Technology & Forged Steel Advantages
Self-Sealing Structure Design
The bonnet adopts a wedge-type self-sealing structure: higher medium pressure increases sealing specific pressure, completely eliminating leakage risks from traditional flange bolt loosening. Test data shows that under Class 1500 conditions, the self-sealing structure has a leakage rate 92% lower than flange seals, especially suitable for safety-critical scenarios like high-pressure steam pipelines and wellhead devices.
Forged Steel Material Advantages
The valve body uses A105 forged carbon steel, formed by high-temperature forging at 1100℃, with a dense grain structure. Tensile strength is 30% higher than cast steel, and impact toughness increases by 40%. Ultrasonic testing (UT) shows internal defect rate ≤0.5%, suitable for particle-containing media or vibrating conditions.
Multi-Pressure Class Compatibility
The same body structure is compatible with Class 600~2500 pressure classes. Upgrading pressure classes is achieved by replacing sealing surface materials and bolt specifications, reducing project spare parts types and procurement costs.
Bevel Gear Drive Optimization
Uses 20CrMnTi carburized quenched gears with a 1:4 transmission ratio, reducing operating torque by 60% compared to ordinary manual valves. Enables single-person operation for DN600 valves and supports limit switch installation for remote status monitoring.