Cast Steel Globe Valve | WCB Class150‑1500 ANSI Flanged Industrial Valve

Specification

VALVEFAC ANSI/BS/DIN/JIS/API Manual Flanged Globe Valve (150LB~1500LB, WCB)
I. Product Overview
VALVEFAC manual flanged globe valve is a versatile industrial flow control solution engineered to meet global standards. Crafted with WCB cast carbon steel, it integrates precise throttling capabilities and reliable sealing to handle water, oil, gas, and other industrial media. Designed for 150LB~1500LB pressure and compatible with ANSI, BS, DIN, JIS, and API specifications, it features a flanged connection and manual operation for straightforward installation and control. Ideal for petrochemical, power generation, and general industrial systems, it balances performance, durability, and cost-effectiveness, serving as a cornerstone of stable pipeline operations.
API Globe Valve Technical Standard
Design and Manufacturer Face to face end Flange Dimension Pressure Temperature Rating Inspection and Test
ANSI B16.34, BS1873 ANSI B16.10 ANSI B16.5 ANSI B16.34 API 598
API Globe Valve Pressure
Pressure unit 150 300 600 900 1500
Shell Test Mpa 3 7.7 15.3 23
Water Seal Test Mpa 2.2 5.7 11.2 17
Air Seal Test Mpa 0.6
API Globe Valve  Material
Body Stem Gasket Seal face Working temperature Medium
WCB 2Cr13 PTFE, RPTFE, graphite 13Cr, 304, 316, stellite 425 C water
CF8 304 400C nitric acid
CF8M 316 acetic acid
Product Name: Globe valve .ANSI flanged globe valve 150LB 300LB 600LB
Material: stainless steel CF8 CF8M CF3 CF3M F304 F316etc
End Connection: RF ,FF ,RTJ flanged end ,NPT ,BSP,SW/ BW welded end
Standard: DIN GB ISO JIS BA ANSI
Pressure Grade: DIN GB ISO JIS BA ANSI
Brade: VALVEFAC
Working temperature: Working temperature-29~425℃ WCB -40~500℃ SS
Used Medium: Water,Oil,Gas,Niric Acid ,etc

II. Key Attribute Parameters
Size & Pressure
Port Size: 1/2″~40″ (DN15~DN1000), covering small to large-diameter pipelines. From 1/2″ instrument lines to 24″ main process pipelines, it adapts to diverse flow control needs, ensuring compatibility with standard industrial layouts.
Pressure Rating: 150LB~1500LB (2.0MPa~10.0MPa). 150LB suits low-pressure systems (e.g., municipal water); 300LB/600LB handle medium to high pressure (e.g., oil transmission, steam pipelines).
Material & Sealing
Body & Bonnet: WCB cast carbon steel (ASTM A216), offering high strength (tensile strength ≥485MPa) and temperature resistance up to 425℃. It withstands water, oil, gas, and mild industrial fluids without corrosion in non-aggressive environments.
Seal Components:
Valve Seat/Disc: Metal-to-metal (13Cr stainless steel or stellite coated) for high pressure/temperature; optional PTFE soft seals for corrosive media. Stellite’s hardness (HRC55~60) resists wear from frequent operation.
Flange Gaskets: Graphite (for high temperature) or PTFE (for chemicals), ensuring leak-tight flange connections per standard specifications.
Stem: 2Cr13 alloy steel, corrosion-resistant and torque-resistant, preventing seizing during manual operation.
Connection & Operation
Connection Type: Flanged (RF/FF/RTJ), compatible with ANSI B16.5 (US), BS 10 (UK), DIN 2501 (EU), and JIS B2220 (Japan) standards. This flexibility allows integration into global pipeline systems without adaptation.
Actuation: Manual (handwheel), with precision threading for fine flow adjustment. The handwheel’s ergonomic design reduces operator fatigue during frequent throttling (e.g., regulating boiler water level).
Standards Compliance
Design & Manufacturing: API 602 (small sizes), API 600 (large sizes), ANSI B16.34 (pressure-temperature ratings).
Testing: API 598 (hydrostatic shell test at 1.5×rated pressure; seat test at 1.1×rated pressure) to verify strength and sealing.
Product Overview
III. Features Description
Precise Throttling Control: The globe valve’s linear stem movement (disc lifts/lowers perpendicular to flow) creates a variable flow area, enabling fine flow rate adjustment. This makes it superior to ball valves for applications requiring stable regulation (e.g., controlling fuel supply to industrial burners).
Global Standard Compatibility: Flange dimensions, face-to-face lengths, and pressure ratings align with ANSI, BS, DIN, JIS, and API standards. This eliminates installation barriers in cross-border projects, from North American refineries to European chemical plants.
Metal Hard Sealing Reliability: Metal-to-metal seals maintain tight shut-off under 600LB pressure and 425℃ temperature, outperforming soft seals in high-pressure steam or hot oil systems. They avoid degradation from heat or pressure surges, ensuring long-term sealing integrity.
Cost-Effective Durability: WCB material balances performance and cost, avoiding the premium of stainless steel for non-corrosive media. Cast construction eliminates internal defects, while precision-machined components reduce maintenance needs, lowering lifecycle costs.
Straightforward Maintenance: Flanged connections allow easy disassembly for seal replacement or stem lubrication. Standardized parts (e.g., gaskets, stems) simplify spare part procurement globally.
IV. Manufacturing Processes
Casting: WCB steel is melted and poured into precision molds. Automated casting ensures uniform density; post-casting annealing relieves internal stresses to prevent warping.
Machining: Valve body, disc, and stem are CNC-machined to tight tolerances (±0.02mm). Seal faces are ground to Ra ≤1.6μm, ensuring uniform contact between seat and disc for tight sealing.
Seal Assembly: Metal seats are press-fitted or welded into the body; stellite coating is applied via plasma welding, then lapped for flatness. Flange gasket grooves are machined to match standard dimensions (e.g., ANSI B16.5 RTJ grooves).
Testing:
Hydrostatic Shell Test: 150LB valves tested at 3.0MPa, 600LB at 15.0MPa for 30 minutes to check for body leaks.
Seat Leakage Test: 1.1×rated pressure (e.g., 2.2MPa for 150LB) with water, ensuring leakage ≤0.1×DN (mm)/min (API 598 standards).
Operation Test: 100+ open/close cycles verify smooth handwheel operation and consistent sealing.