Stainless Steel Valve Body for Global Valves

The Stainless Steel Valve Body for Globe Valves is a precision-engineered component designed for precise flow control and throttling in industrial pipelines. Manufactured from 304 (UNS S30400), 316 (UNS S31600), or high-performance alloys like 904L (UNS N08904), these bodies feature a contoured internal flow path optimized for minimal pressure drop and linear flow characteristics, with threaded, flanged, or welded end connections to meet ASME B16.34 and DIN EN 12516 standards.

Engineered with replaceable seat rings and stem guides, the valve bodies offer easy maintenance and long service life, even in high-cycle or severe-service applications.

This casting part is global valve body with feature of complex and compact internal structure. It’s produced by lost-wax with silica sol technique to get the smooth fluid passage and accurate dimensions.

The valve body is made by wear-resistant materials,making it suitable for high-pressure and high-temperature working conditions.

Flow Optimization: CFD-analyzed S-shaped flow passage reduces turbulence and noise (≤ 85 dBA), achieving up to 95% choke coefficient (Cv) for precise control of liquids, gases, and steam.

High-Temperature Performance: 316H (UNS S31609) bodies withstand continuous operation at 450°C (842°F), while Inconel 600 variants handle extreme heat (up to 1,000°C/1,832°F) in furnace bypass lines.

Precision Machining: CNC-machined bonnet faces (flatness ≤ 0.02mm) and stem bores (H7 tolerance) ensure zero stem leakage, with optional anti-cavitation trim for applications prone to vaporization.

Corrosion Resistance Matrix: Alloy selection matches media severity—304 for general service, 316 for chloride exposure, and 904L for concentrated sulfuric acid (≥ 70% concentration), with passivation ensuring surface purity.

The valve body is the main component of a global valve, which is used to regulate, control, or isolate fluid flow in pipelines.It houses the internal mechanisms, such as the plug and seat, which work together to provide precise flow adjustment.Its compact design and efficient flow path minimize pressure drop and ensure optimal performance in various fluid control systems.

Global valve body casings are widely applied in industries that require precise flow control, tight shut-off and reliable operation under different  conditions,such as water treatment industry, power generation industry, petrochemical industry, and chemical industry,etc.

Their versatility and robustness make them a key component in industrial fluid control systems.

Power Generation: Used in steam systems for turbine bypass and feedwater control, with 316H bodies resisting oxidation and thermal fatigue in superheated steam environments.

Chemical Processing: Controls the flow of corrosive chemicals like nitric acid, caustics, and solvents, with 904L bodies providing superior resistance to pitting in mixed acid conditions.

Petrochemical & Refining: Integral to hydrocarbon processing lines, where 316 bodies withstand hydrogen sulfide (H₂S) and amine solutions, paired with metal-seated trim for tight shutoff (bubble-tight to API 598).

HVAC & Water Systems: Regulates hot water and chilled water flow in commercial buildings, with 304 bodies offering cost-effective corrosion resistance in non-aggressive fluids.

Q: What is the difference between pressure seal and bolted bonnet designs?

A: Pressure seal bodies use medium pressure to load the bonnet gasket, ideal for high-pressure (≥ 100 bar) applications; bolted bonnets are standard for low-to-medium pressure (≤ 64 bar).

Q: Can these valve bodies be used for cryogenic services?

A: Yes—316L bodies with extended bonnets and cold-rated seals (Viton® GLT) handle temperatures as low as -196°C (-321°F), compliant with ASME B16.34 for cryogenic service.

Q: How is the flow characteristic adjusted for different applications?

A: Replaceable trim kits offer linear, equal percentage, or quick-opening characteristics, with plug shapes (e.g., V-port, cage-guided) optimized via flow testing in our ISO 5167-calibrated lab.