High Quality Flanged Manual Stainless Steel Forged Globe Valve For Water Oil Gas

Product Attribute: port size:1/2″-2″,DN15-DN50
structure:stop valve
application:General
power:Manual
temperature of media:Normal
brand name:TIANYU
media:Water
Standard or Nonstandard:BSPT,Optional(NPT, BSP, BSPP)
Material:Stainless Steel,A105,LF2,F11,F304(L),F316(L),F5,F22,Carbon steel etc
Operating Temperature:- 20℃ ~ + 425°C
Working Pressure:JIS10-20K,API607,ANSI150-1500LB,16-160Bar,PN16-160,PN16,200WOG
Connection:JIS10-20K,API607,ANSI150-1500LB,16-160Bar,PN16-160,PN16,200WOG
Medium:Water Oil Gas

INFO@TYFLUIDGROUP.COM

Specification

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

I. Product Overview

TIANYU 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)

Valve Details

V. Core Product Advantages

High-Pressure Adaptability
- Petrochemical: 316 body resists oil corrosion, 5-year leak-free operation in 425℃ steam
- Power: Class 600 suits high-pressure feedwater systems, erosion-resistant seat lasts >8 years
- Metallurgy: Forged body withstands high-pressure shocks, stable torque at 6.0MPa
Long-Term Reliability
- Replaceable seat design reduces on-site maintenance cost by 50%
- Maintenance-free cycle reaches 10,000 operations, 20% longer than similar products
Global Certification
- Certified to API 600, CE-PED, SIL 3 functional safety
- Provides API 598 test reports, Material Test Reports (MTR), and third-party inspection

Application

VI. Application Fields & Cases

Refinery atmospheric-vacuum unit: DN40 Class 600 valve controls 380℃ residue oil, STL seat wear ≤0.1mm/year
Gas-fired power plant: DN50 316 valve in 2.5MPa natural gas line, anti-static design meets API 607
Pharmaceutical pure water system: DN25 electropolished body (Ra≤0.8μm), FDA-certified seals for GMP compliance

VII. Installation & Maintenance Guide

Installation: Align media flow with body arrow, torque flange bolts diagonally in three steps (ASME PCC-1)
Routine Maintenance: Inspect packing quarterly, replace grease annually (molybdenum disulfide for high temp)
Troubleshooting: Adjust gland bolts (torque increase ≤15%) online for seal leakage, no disassembly needed

High Quality Flanged Manual Stainless Steel Forged Globe Valve For Water Oil Gas

Specification