Forged Steel Valves

J61W Thermal Oil Welded Isolation Instrument Needle Valve

Valve Structure: Needle Type / Instrument Gauge Valve
Bonnet Design: Extended Bonnet with Heat Dissipation Fins
Connection Method: Socket-Welded (SW) / Butt-Welded (BW)
Flow Pattern: Straight-Through Pattern
Description: Premium DN10 J61W-160P stainless steel needle valve engineered for high-pressure instrument lines and high-temperature steam services. Featuring a heavy-duty forged 304SS square body, heat dissipation
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The J61W-160P series stainless steel needle valve is a compact, high-precision instrument-grade valve designed for severe isolation and throttling services in high-pressure steam, thermal oil, and chemical sampling lines. Fabricated from premium grade 304 stainless steel, the solid square-body construction eliminates common casting micro-porosities. Its distinct extended bonnet design features integrated cooling fins that effectively dissipate heat, protecting the packing area from extreme medium temperatures and ensuring smooth, low-torque handwheel operation over an extended service lifecycle.

Technical Specifications

Model Configuration: J61W-160P Series
Valve Mechanism: Needle / Conical Plug Flow Regulation
Nominal Size: DN10 (3/8 Inch)
Pressure Rating Group: PN160 / High Pressure Class (up to 16 MPa equivalent)
Body Material Grade: Stainless Steel 304 (SS304 / 1.4301)
Manufacturing Design: Solid Square-Block Body Construction
Bonnet Feature: Extended Bonnet with Heat Dissipation Radiator Fins
Connection Profile: Socket Welded (SW) / Butt Welded (BW) Ends
Design Guideline: ASME B16.34 / GB/T 12224 Standard
Stem Tip Facing: Hardened Stainless Steel Integrated Needle Tip
Sealing Performance: Metal-to-Metal Bubble-Tight Seat Integrity
Flow Directionality: Unidirectional Control (Marked with permanent directional arrow)
Actuation Interface: Manual Plastic-Coated Ergonomic Handwheel
Stem Configuration: Inside Screw, Rising Stem Thread Profile
Primary Service Medium: Superheated Steam, Thermal Oil, Instrument Gas, Corrosive Fluids
Core Application: Instrument Manifolds, Boiler Blowdown Sampling, Gauge Isolation Lines
Thermal Management: Engineered for Elevated Temperatures with Enhanced Heat Dissipation
Quality Testing Protocol: Hydrostatic Shell and High-Pressure Nitrogen Seat Leak Verified
Packing Component: High-Purity Die-Formed PTFE or Flexible Graphite Rings
Surface Presentation: Clean Natural Stainless Steel Bright Finish
Logistics Protection: Welded Sockets Machined and Fitted with Protective Plastic Caps