Specification

NEWWAY Forged Stainless Steel Globe Valve: High-Pressure Precision Flow Control Solution

I. Product Overview

NEWWAY forged stainless steel globe valves feature A182 F304/F316 forged stainless steel bodies, compliant with ASME B16.34 standards for Class 600 (PN100) high-pressure applications. The lift-type disc enables flow cutoff and regulation, covering DN15-DN50 (1/2″-2″) with -20℃~425℃ temperature resistance for water, oil, and gas in high-pressure pipelines. Forged construction and dual sealing ensure reliable operation in petrochemical, power, and metallurgical industries.

II. Core Technical Parameters

Specifications & Pressure-Temperature Range

Nominal Diameter: DN15/20/25/32/40/50 (1/2″-2″)

Pressure Class: Class 600 (PN100, 10.0MPa), compatible with Class 150-1500LB

Temperature Range: -20℃~425℃ (standard), -196℃~600℃ (special materials)

Materials & Sealing System

Body/Bonnet: A182 F304/F316 forged stainless steel (tensile strength ≥515MPa)

Disc/Seat: 304 with STL alloy overlay (HRC58-62), sealing surface roughness Ra≤0.2μm

Packing: V-type flexible graphite + PTFE, leakage rate ≤1×10⁻⁶cc/s (API 598)

Connections: Flanged (RF face, ASME B16.5), threaded (NPT, API 5B)

Actuation & Operation

Actuation: Manual (gear handwheel standard), electric (explosion-proof actuator), pneumatic

Operating Torque: DN50 manual ≤80N·m, electric actuation time ≤8s

Protection Grade: IP65 (body), Ex d IIB T4 (explosion-proof)

Product Overview

III. Structural Design & Technical Features

High-Pressure Seal Optimization

Wedge disc with 5° tapered seat self-seals via medium pressure, sealing specific pressure ≥25MPa

Dual sealing: metal hard seal + packing auxiliary seal for bidirectional bubble-tight performance

Hydrodynamic Design

Streamlined flow path reduces pressure drop by 15% vs. conventional globe valves, DN50 pressure loss ≤0.2MPa

Balanced disc design minimizes on-off resistance under high pressure differential (≤8.0MPa)

Material Reliability

Forged body eliminates casting defects, grain flow enhances fatigue resistance by 30%

Chrome-plated stem (HRC35+) resists corrosion and wear

IV. Manufacturing Processes & Quality Control

Precision Forging

Body formed by die forging, solution treated at 1100℃, passes intergranular corrosion test (ASTM A262 E method)

STL overlay on disc tempered at 550℃ to eliminate stress, hardness variation ≤±2HRC

High-Precision Machining

Seat sealing surface ground by 5-axis grinder, taper error ≤0.01°, red lead test contact rate ≥90%

Stem straightness ≤0.005mm/m, coaxiality with packing ≤0.03mm

3D Quality Inspection

Hydrostatic test: 1.5x pressure (15.0MPa) for shell, 1.1x (11.0MPa) for sealing—zero leakage

Spectral analysis: element deviation ≤0.05% per heat, traceable to heat number

Impact test: -40℃ impact energy ≥27J (Charpy V-notch, 316 material)