KJ61Y Erosion Resistant PN420 Pressure Seal Stop Valve

The KJ61Y (YK8868) series forged steel anti-scouring globe valve is a specialized flow isolation solution designed for severe utility services, such as high-pressure boiler drains, steam line vents, and continuous blowdown systems. Fabricated from premium forged alloy or stainless steel (such as F31), the valve features a robust integrated body that eliminates potential casting defects. Its unique internal geometry combined with an advanced pressure seal bonnet minimizes media velocity erosion and cavitation wear, ensuring extended service life in high-differential pressure environments.

Technical Specifications

• Valve Identification: KJ61Y / YK8868 Series

• Manufacturing Craft: Fully Forged Steel Body

• Functional Profile: Anti-Scouring / Erosion & Cavitation Resistant

• Nominal Size: DN40

• Pressure Designation: High Pressure Series (e.g., 420V / Class 2500)

• Body Material Grade: Forged Stainless Steel (F31) / High-Temp Alloy Steel

• Bonnet Joint Type: Pressure Seal / Self-Sealing Bonnet Design

• Connection Profile: Butt Welded (BW) or Socket Welded (SW)

• Design Specification: ASME B16.34 / JB/T 3595

• Disc & Seat Armoring: Overlaid with Cobalt-Based Stellite Hard Alloy

• Flow Geometry: Straight-Through Heavy Square Body Design

• Stem Configuration: Outside Screw and Yoke (OS&Y), Rising Stem

• Actuation Method: Manual Handwheel Operated (Actuator Adaptable)

• Flow Directionality: Unidirectional Flow (As indicated by arrow on body)

• Primary Service Medium: Superheated Steam, High-Temperature Drain Water

• Target Industrial Application: Power Station Boiler Island, Steam Headers

• Thermal Management: Engineered for High-Temperature Thermal Cycling

• Pressure Test Standard: Hydrostatic Shell and Seat Leakage Verified

• Stem Packing Compound: High-Purity Die-Formed Flexible Graphite Rings

• Surface Presentation: Clean Matte Silver Protective / Anti-Corrosion Finish

• Logistics Preservation: Machined Ends Sealed with Fitted Plastic Caps

• Data Traceability: Stamped with Heat Number, Size, Material, and Pressure Code