Forged Steel Valves

PN420 Pneumatic Actuated Pressure Seal Globe Valve High Pressure

Actuation Mode: Pneumatic Actuated with Manual Override
Bonnet Structure: Pressure Seal Bonnet
Special Attribute: Anti-Scouring / Erosion Resistant
End Connection: Butt-Welded Ends (BW)
Description: High-performance PN420 KJ661Y pneumatic actuated globe valve engineered for automated high-pressure steam and drain systems in power plants. Featuring a robust forged steel body, leak-proof pressure s
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The KJ661Y series pneumatic actuated globe valve is an advanced flow control and isolation solution designed for heavy-duty automation in high-temperature, high-pressure steam and boiler water systems. Equipped with a high-thrust pneumatic cylinder actuator, top-mounted manual handwheel override, solenoid valves, and limit switches, it supports seamless integration into distributed control systems (DCS). Its premium forged steel construction and special internal geometric design efficiently resist fluid scouring, cavitation, and flashing, making it perfect for critical power plant drainage and vents.

Technical Specifications

Model System: KJ661Y Series
Actuation System: Pneumatic Cylinder Actuator
Emergency Operation: Top-Mounted Manual Handwheel Override
Bonnet Construction: Self-Sealing Pressure Seal Bonnet Design
Valve Function: Anti-Scouring / Flashing & Cavitation Resistant
Nominal Pressure: PN420 / 320V Series
Body Material Craft: Heavy-Duty Forged Carbon Steel / Cr-Mo Alloy Steel
Connection Profile: Butt Welded Ends (BW)
Design Guideline: ASME B16.34 / JB/T 3595
Disc & Seat Face: Overlaid with Cobalt-Based Stellite Hard Alloy
Flow Geometry: Heavy Straight-Through Pattern
Stem Configuration: Outside Screw and Yoke (OS&Y), Rising Stem
Control Accessories: Solenoid Valve and Air Filter Regulator Pre-installed
Signal Feedback: Proximity / Mechanical Limit Switches Integrated
Working Medium: High-Pressure Superheated Steam, Severe Boiler Drain Water
Core Application: Power Plant Boiler Island, Steam Line Drainage Insulation
Thermal Management: Engineered for Frequent High-Temperature Thermal Cycles
Inspection Standard: Hydrostatic Shell and High-Pressure Seating Leakage Tested
Sealing Component: Die-Formed High-Purity Flexible Graphite Packing
Surface Coating: Heat-Resistant Industrial Blue Protective Finish
End Protection: Clean Machined Bevels Fitted with Sturdy Plastic Covers
Data Traceability: Stamped Permanently with Heat Number, Size, Material, and Rating