Engineered for automated flow regulation and reliable shut-off in general industrial applications, the Class 300 BS 1873 Flanged Pneumatic WCB Cast Steel Globe Valve delivers exceptional performance and operational efficiency.
Manufactured from high-quality ASTM A216 WCB cast steel, this valve offers excellent mechanical strength and suitability for water, oil, gas, and steam services. Designed strictly to BS 1873 standards and compatible with ASME B16.5 flange dimensions, it features a robust bolted bonnet construction and a plug-shaped disc that moves linearly along the valve seat centerline. Equipped with a high-performance pneumatic actuator for automated remote control, this WCB globe valve ensures smooth flow modulation, precise process control, and seamless integration into critical chemical, petrochemical, and power generation piping systems.
Key Features & Benefits
· BS 1873 Standard Compliance: Designed and manufactured strictly to BS 1873 specifications, ensuring dimensional compatibility, structural safety, and reliable performance in global industrial infrastructure.
· WCB Cast Steel Construction: Crafted from premium ASTM A216 WCB cast steel, providing superior strength, durability, and resistance to high-pressure environments for general industrial media.
· Automated Pneumatic Actuation: Integrated with a robust pneumatic actuator for precise, remote flow control, allowing seamless integration into plant DCS/PLC systems and reducing manual labor in hazardous areas.
· Precise Throttling & Shut-off: The plug-shaped disc moves linearly along the valve seat, with the port change directly proportional to the disc stroke, making it ideal for both precise flow regulation and reliable isolation.
· RF Flanged End Connections: Compliant with ASME B16.5 standards, ensuring easy installation, secure sealing with non-metallic gaskets, and leak-proof performance in standard piping systems.
· OS&Y Rising Stem Mechanism: Features an Outside Screw and Yoke design with a non-rotating rising stem, providing a clear visual indication of valve position and protecting stem threads from media exposure.
Technical Specifications
Parameter | Specification |
Valve Type | Flanged Pneumatic Globe Valve |
Design Standard | BS 1873 |
Body Material | Carbon Steel (ASTM A216 WCB) |
End Connection | Flanged (RF) per ASME B16.5 |
Pressure Rating | Class 300 (PN50) |
Size Range | 1/2" - 24" (DN15 - DN600) |
Temperature Range | -29°C to +425°C |
Trim Material | 13% Cr, Stainless Steel, or Stellite Hard-Faced |
Operation | Pneumatic Actuator (Double Acting / Spring Return) |
Testing & Inspection | API 598 / BS 6755 |
Applications
This versatile Class 300 BS 1873 WCB pneumatic globe valve is widely deployed in:
· Chemical Processing: Automated fluid handling, chemical distribution, and process control systems requiring precise flow modulation.
· Petrochemical Plants: Corrosive fluid isolation and throttling in processing and distribution systems with remote control needs.
· Power Generation: Auxiliary water, steam, and general industrial utility lines requiring automated flow regulation.
· Oil & Gas Industry: Gathering, transportation, and processing pipelines requiring reliable automated isolation and throttling.
· Water & Wastewater Treatment: Main water supply lines, industrial cooling water systems, and automated flow control applications.
FAQ
Q: What is the advantage of a pneumatic actuator for a BS 1873 globe valve?
A: Pneumatic actuators provide precise, remote automated control without the need for manual operation. They offer fast response times, high reliability, and seamless integration into plant automation systems (DCS/PLC), making them ideal for hazardous areas or applications requiring frequent flow modulation.
Q: Why choose WCB cast steel for pneumatic globe valves?
A: WCB (ASTM A216) is a standard carbon steel casting that offers excellent weldability, good mechanical strength, and suitability for high-temperature services up to 425°C. It is the most cost-effective and widely used material for general industrial pneumatic valves handling water, oil, gas, and steam.
Q: What are the common types of pneumatic actuators for globe valves?
A: Common types include double-acting actuators (requiring air pressure for both opening and closing) and spring-return actuators (using air pressure for one direction and a spring for fail-safe return). The choice depends on the specific process control requirements and safety considerations.
