Pneumatic 3-Way Globe Control Valve (Mixing / Diverting) - WCB Flanged | DELCO
The DELCO Pneumatic 3-Way Control Valve is a heavy-duty modulating valve designed for precise fluid Mixing (Confluence) or Diverting (Split) in heat exchange and industrial process loops. Powered by a responsive Multi-Spring Diaphragm Actuator with a smart positioner (4-20mA), it ensures accurate temperature and pressure control. Available in DN15–DN600 with Cast Steel (WCB) or Stainless Steel bodies, compliant with ANSI/DIN/JIS standards.
Features
Optimized for thermal management systems, this valve combines versatile 3-way flow configurations with robust pneumatic automation for stable control:
✅Versatile Mixing & Diverting Configurations
The valve utilizes a specialized spool design to handle two distinct flow modes: Mixing Type (Confluence) for blending two fluids into one, or Diverting Type (Split) for separating one fluid into two paths. This replaces the need for two separate 2-way valves, saving installation space and piping costs.
✅Multi-Spring Diaphragm Actuator
Equipped with a compact ZHA/ZHB type multi-spring pneumatic diaphragm actuator. It offers a low profile, high output force, and reliable fail-safe operation (Air-to-Open or Air-to-Close) to protect the system during air supply failure.
✅Precise 4-20mA Positioning
Integrated with an Electro-Pneumatic Valve Positioner, the valve accepts standard 4-20mA signals to convert electrical commands into precise stem displacement. This ensures rapid responsiveness for controlling heat transfer fluids, cooling water, and steam.
✅Wide Temperature Range (-40°C to +450°C)
Standard bodies (WCB) operate efficiently from -20°C to 200°C. For extreme thermal applications, we offer High-Temperature Bonnets with Cooling Fins (radiators) to dissipate heat, protecting the actuator and packing in temperatures up to 450°C.
✅Robust WCB/SS Construction & Standards
The valve body features a rigid guide structure to minimize vibration. Flange connections are machined to ANSI 150/300, DIN PN16/40, and JIS standards, allowing for seamless integration into global pipelines.
Key Application Fields
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Oil & Gas
DELCO API-certified valves ensuring safety and reliability in demanding high-pressure pipelines. -
Chemical & Petrochemical
DELCO corrosion-resistant solutions tailored for handling aggressive acids and hazardous fluids safely. -
Power Generation
DELCO solutions efficiently withstand extreme high-temperature and high-pressure steam cycles in power plants. -
Food & Pharmaceutical
DELCO sanitary valves with FDA-compliant, crevice-free designs to ensure absolute product purity. -
Water & Wastewater
Durable municipal solutions by DELCO, designed for zero leakage and long-term sustainability. -
HVAC & District Heating
DELCO valves ensure precise flow regulation to optimize energy efficiency in modern buildings.
Browse our case studies or talk directly with our engineers to discuss your application.
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