Stainless Steel Forged Steel Flange Globe Valves

Stainless Steel Forged Steel Flange Globe Valves are manufactured with integral forging technology and belong to high-strength shut-off and regulating valves.The core structure consists of stainless steel forged body, bonnet and disc assembly. The valve achieves reliable on-off control and precise flow regulation by driving the disc up and down via the valve stem.

Compared with conventional cast steel valves, Stainless Steel Forged Steel Flange Globe Valves feature higher material density, greater mechanical strength and more stable impact resistance.With corrosion-resistant stainless steel and mature sealing structure, the valves can operate for a long time in high-temperature, high-pressure and corrosive media environments.Designed and manufactured in accordance with GB, API, ASME and other standards, they are widely used in oil & gas, high-pressure chemical, power station and offshore systems, serving as key control components for high-pressure pipelines.

Core Structure & Performance Features

■ Integral Forged BodyBody and bonnet are produced by open die or closed die forging, with dense internal structure and free from casting porosity.Structural stability is superior to cast valves under fluctuating pressure or impact conditions.

■ Straight-Through Flow PassageStandard straight-through design reduces local flow resistance and provides more linear flow regulation, ideal for process systems requiring stable control.

■ OS&Y Outside Screw & Yoke StructureRising stem design allows clear observation of valve position. Stem threads are isolated from the medium, extending service life.

■ Multiple Sealing SolutionsMetal hard seal or PTFE soft seal is available based on service conditions, enabling the valves to cover both high-temperature high-pressure and clean medium applications.

Core Technical Parameters

Main Material Configuration Body & Bonnet

Body & Bonnet

Trim & Sealing

● Valve Stem: 316 or 17-4PH precipitation hardening stainless steel

● Seat/Disc: Stellite hardfacing or body material seal

● Packing: Flexible graphite or PTFE reinforced type

● Flange Gasket: Spiral wound gasket / PTFE / RJ ring gasket

With the above material system, Stainless Steel Forged Steel Flange Globe Valves achieve balanced performance in wear resistance and sealing stability.

Actuation & Connection Options

With proper actuator configuration, Stainless Steel Forged Steel Flange Globe Valves can operate stably in automated systems.

Key Selection Guidelines

Selection by Pressure Class

● For PN100 and above or fluctuating pressure: forged structure preferred

● For ultra-high pressure: RJ flange face recommended

Material Selection by Corrosiveness

● General service: 304

● Chlorine or acid service: 316L

● For high temperature: verify allowable stress of material

Selection by Sealing Requirement

● High temperature, high pressure, particle-containing: metal hard seal

● Clean service with strict leakage control: PTFE soft seal

Matching by Operation Mode

● DN≤80 and low operation frequency: manual

● Remote or automatic control: electric/pneumatic

● Large-bore high-pressure: bevel gear

Installation, Operation & Maintenance

Installation

● Verify model, pressure class and material compatibility

● Check for mechanical damage on forged surfaces

● Install in flow direction marked on body: low inlet, high outlet

Commissioning & Operation

● Operate manually smoothly and slowly to avoid impact

● Conduct no-load and step-by-step pressure test for electric/pneumatic valves

● Ensure zero leakage before startup of high-pressure systems

Maintenance

● Regularly inspect packing gland and flange joints

● UT/MT non-destructive testing recommended for long-term service

● Repair disc and seat sealing surfaces if regulation performance declines

Restart After Shutdown

● Check for smooth operation by manual turning before startup

● Conduct shell and seal test if necessary

● Put into service only after passing inspection

Applications

With high-strength forged structure and reliable sealing system, Stainless Steel Forged Steel Flange Globe Valves are widely used in:

● Oil & Gas Transportation

● High-Pressure Chemical Plants

● Thermal & Nuclear Power Systems

● Offshore & Marine Platforms

● High-Temperature High-Pressure Process Pipelines