API600 High Pressure 1500LB Welded Y-Type Globe Valve

Product Overview

The API600 High Pressure 1500LB Welded Y-Type Globe Valve is a premium critical-service valve engineered for extreme high-pressure high-temperature (HTHP) industrial systems, fully compliant with API 600 standards and ASME B16.34 pressure-temperature ratings. Constructed from high-strength cast steel (WCB/WC6/WC9), this valve features butt welded (BW) end connections (per ASME B16.25), a streamlined Y-type flow channel, and an OS&Y (Outside Screw and Yoke) rising stem design. Rated for Class 1500LB (PN250 / 36.3 MPa) and operating temperatures from -29℃ to 570℃ (-20°F to 1058°F), it delivers precise throttling, bubble-tight shutoff (API 598 Class VI), and exceptional resistance to pressure spikes and media erosion. The Y-type structural design reduces flow resistance by up to 60% compared to standard globe valves , optimizing energy efficiency for high-pressure fluid transfer. Widely trusted in thermal power plants, petrochemical refineries, and oil & gas high-pressure pipelines, it balances API 600’s rigorous safety requirements, 1500LB pressure capacity, and welded connection reliability for critical flow control applications.

Key Features & Advantages

1.API 600 Compliance for Critical-Service Reliability

Fully adheres to API 600 (Bolted Bonnet Steel Gate Valves for Oil and Gas Industry) — the global benchmark for high-pressure critical-service valves, requiring thicker wall sections (20-30% exceeding ASME B16.34 minima) , mandatory metal-to-metal seating, and bolted/pressure seal bonnet designs . Complies with ASME B16.34 (pressure-temperature ratings), ASME B16.10 (face-to-face dimensions), and API 598 (inspection and testing) standards, ensuring bubble-tight shutoff (Class VI leakage) and fire-safe performance (API 607/ISO 10497 optional) . API 600’s structural rigor eliminates failure points in harsh service, with features like blow-out proof stems and backseat design for in-line maintenance — critical for 1500LB high-pressure systems.

2.1500LB (PN250) High-Pressure Rating & HTHP Performance

Rated for working pressure up to 36.3 MPa (5265 psi) at ambient temperature, with pressure-temperature ratings aligned to ASME B16.34 for WCB/WC6/WC9 materials . At 540℃ (1004°F), the valve retains a working pressure of 24.1 MPa (3495 psi) (WC9 material), making it ideal for supercritical steam systems and high-pressure process lines . The reinforced valve body (per API 600 wall thickness standards) handles cyclic pressure loads without deformation, while the pressure seal bonnet design enhances sealing reliability as system pressure increases — the higher the pressure, the tighter the seal .

3.Y-Type Streamline Design for Low Flow Resistance

Innovative Y-type flow channel (65° angle) with a near-straight passage reduces flow resistance by up to 60% compared to conventional globe valves , minimizing pressure drop and energy consumption . The streamlined design also reduces media erosion on internal components, extending service life in high-velocity fluid applications . The valve disc features a secondary throttling surface that diverts high-pressure fluid away from the main sealing face, protecting against cavitation and wear . Ideal for large-volume fluid transfer and throttling service in power plant steam lines and petrochemical process pipelines.

4.Butt Welded (BW) End Connections for Leak-Proof Integrity

Equipped with ASME B16.25 butt welded ends — the preferred connection for high-pressure (Class 1500LB+) applications. Welded design eliminates flange leakage risks, ensures structural integrity under HTHP conditions, and is suitable for long-distance pipelines where maintenance access is limited . The weld joint is designed for full penetration, complying with AWS D1.1 welding standards for maximum strength and corrosion resistance . Optional socket welded (SW) ends available for smaller sizes (DN50-DN100) per ASME B16.11.

5.High-Strength WCB/WC6/WC9 Material Options

Available in three premium material grades to match diverse HTHP requirements:

·ASTM A216 WCB Carbon Steel: Tensile strength 485-620 MPa, yield strength ≥250 MPa, operating temperature -29℃~425℃ . Cost-effective for medium-temperature high-pressure applications (e.g., boiler feedwater lines).

·ASTM A217 WC6 Low-Alloy Steel (1.25Cr-0.5Mo): Operating temperature up to 593℃, ideal for high-temperature steam systems with superior creep resistance .

·ASTM A217 WC9 Low-Alloy Steel (2.25Cr-1Mo): Tensile strength ≥485 MPa, yield strength ≥275 MPa, operating temperature up to 570℃ . Excels in supercritical power plant main steam lines, with 8+ years of leak-free service under 540℃/16MPa conditions .

All materials feature excellent weldability and machinability, with Stellite 6 overlay (hardness HRC ≥55) on disc/seat surfaces for enhanced wear and erosion resistance .

6.OS&Y Rising Stem & Low-Maintenance Design

Outside Screw and Yoke (OS&Y) rising stem design keeps threads isolated from media, preventing corrosion and extending service life . The visible stem position provides clear open/closed indication for operational safety. Pressure seal bonnet (standard for Class 1500LB) ensures reliable midsection sealing, while the backseat design allows in-line maintenance — replacement of packing or internal components without removing the valve from the pipeline . Integral forged stem (ASTM A182 F6a) resists bending and blow-out under high pressure, complying with API 600 safety requirements.

Technical Specifications

Applications

•Power Generation: Thermal power plant main steam lines, reheat steam systems, boiler feedwater lines, supercritical/subcritical unit auxiliary pipelines .

•Petrochemical & Refining: High-pressure hydrogenation reactors, ethylene crackers, catalytic cracking units, crude oil distillation columns .

•Oil & Gas Industry: High-pressure wellhead manifolds, offshore platform process lines, natural gas transmission pipelines (Class 1500LB+) .

•Industrial Boilers: High-pressure steam supply systems, boiler blowdown lines, thermal fluid heating systems .

•Metallurgy & Heavy Industry: Steel mill high-pressure water cooling systems, thermal energy recovery pipelines .

Why Choose Our API600 1500LB Welded Y-Type Globe Valve?

✅ API 600 Critical-Service Compliance: Meets rigorous standards for high-pressure safety, ideal for oil & gas/power critical applications.

✅ 1500LB High-Pressure Performance: 36.3 MPa rating with pressure seal bonnet, no leakage under cyclic pressure loads.

✅ Y-Type Low Resistance: 60% reduced pressure drop vs. standard globe valves, energy-saving for large-flow systems.

✅ Welded Connection Integrity: ASME B16.25 butt welds eliminate flange leakage risks, suitable for HTHP pipelines.

✅ HTHP Material Options: WCB/WC6/WC9 grades cover -29℃~570℃, steam/oil/gas media.

✅ Proven Industrial Reliability: Trusted in power plants and refineries worldwide for 8+ years of leak-free service.

Order Information

•Minimum Order Quantity (MOQ): 1 Unit

•Lead Time: 25~40 Working Days (Standard Sizes/Materials); 40~60 Working Days (Customized WC9/Electric Actuation)

•Payment Terms: T/T (30% Advance + 70% Against B/L Copy), L/C, Western Union

•Shipping Method: Sea Freight (FCL/LCL), Air Freight (Urgent Orders)

•Packaging: Anti-Corrosion Coating + Wooden Case + Steel Frame + Export Labeling (Compliant with International Shipping Standards)

•After-Sales Service: 18-Month Warranty, Technical Support, Spare Parts Supply, On-Site Installation Guidance

•Certifications Provided: Material Test Certificate (EN 10204 3.1), API 598 Test Report, ISO 9001 Certificate, API 600 Compliance Certificate, Welding Qualification (AWS D1.1)

Contact Our HTHP Valve Experts for customized quotes, 2D/3D drawings (per API 600/ASME B16.10), material certificates, or technical consultations. We specialize in API 600-compliant high-pressure valves for global industrial applications — let us tailor a solution for your steam, petrochemical, or oil & gas pipeline project.

What Is a High Pressure Welded Y-Type Globe Valve

A High Pressure Welded Y-Type Globe Valve is a flow control valve designed for demanding industrial systems involving elevated pressure and temperature. The Y type body structure positions the stem and seat at an angled path, reducing flow resistance compared with standard globe valves. Welded end connections create a strong and leak resistant pipeline joint. The valve is commonly used in steam, power generation, refinery, and petrochemical applications where accurate flow regulation and reliable shutoff are required.

Why the High Pressure Welded Y-Type Globe Valve Matters

This valve is important because it combines precise throttling performance with excellent pressure handling capability. The Y type design reduces turbulence and pressure loss, improving system efficiency. Welded connections strengthen pipeline integrity and minimize leakage risk in critical services. Its robust construction helps protect equipment from unstable flow conditions while maintaining safe and dependable operation in severe industrial environments involving high temperature and pressure.

Common Product Types by High Pressure Welded Y-Type Globe Valve

Common product types include bolted bonnet Y type globe valves, pressure seal Y type globe valves, and welded bonnet Y type globe valves. Manual, electric, and pneumatic operated versions are available for different control requirements. Various trim materials and hardfaced seat options can be selected for corrosive, erosive, or high temperature media. Butt welded and socket welded end configurations are commonly used in high pressure systems.

Key Advantages of High Pressure Welded Y-Type Globe Valve

The valve offers low flow resistance, accurate throttling capability, and dependable shutoff performance. The Y type body design improves flow efficiency and reduces pressure drop. Welded ends provide strong sealing and reduce external leakage points. The valve structure withstands severe pressure and thermal stress, while durable seat and disc materials support long service life and reduced maintenance in demanding process conditions.

High Pressure Welded Y-Type Globe Valve Machine Structure and Core Stations

Manufacturing begins with forging or casting the body, bonnet, disc, and stem components from high strength materials. Core stations include heat treatment, CNC machining of weld ends, seat surfaces, stem threads, and internal flow passages. Hardfacing may be applied to sealing surfaces for improved wear resistance. Assembly stations install the stem, disc, packing, and bonnet. Final operations include pressure testing, welding inspection, coating, marking, and packaging.