2-Way and 3-Way Control Valves Designed for Special Applications

Cematic's special 2-way and 3-way control valves are the ideal solution for precisely regulating the flow of liquids, gases, or steam in demanding industrial processes. Their pneumatic diaphragm or piston actuator offers fast response, high reliability, and low maintenance.

Furthermore, their wide variety of materials and configurations allows them to adapt to the most demanding conditions of pressure, temperature, and chemical compatibility.

Thanks to their versatile design, special 2-way and 3-way control valves operate in extreme temperature ranges, from -196°C to 565°C, and pressure, up to 2500LB. For this reason, they are one of the most specified solutions in industries such as petrochemical, power generation, and oil & gas, where precise flow control is critical for process safety and efficiency.

Design Options

• Body: WCB, CF8/CF8M, Duplex Steel, Titanium, Bronze. Other special materials under specific request (A216 WCB, A216WC6, A352 LCB, A351 CF8, A351 CF8M, A351 CF3M, A351 CF3 standards)
• Internal Parts (Trim): Stainless Steel 304, 316, 316L, Duplex Steel, Titanium, Bronze. Other special materials depending on process conditions.
• Packing: Graphite and PTFE (can be customized according to specific working conditions, such as ultra-high temperatures and toxic substances)
• Gasket: Stainless steel (304, 316, 316L), copper, aluminum.
• Connection Flanges: RF, FF, RTJ, LG (ANSI B16.5, JIS B2201, JB/T79.1, JB/T79.2 standards)
• Nominal Pressure: 150LB ~ 2500LB (for high pressure and large sizes, verify detailed working parameters)
• Temperature Range: -196°C ~ 565°C

Pneumatic Actuator

• Diaphragm Type: Precise control, low pressure, compact size, low air consumption.
• Piston Type: Greater thrust, ideal for high pressure or large diameters.
• Positioner: Pneumatic, Electro-pneumatic or Smart Type; with 4~20mA signal

Advantages

• Control Precision: They offer excellent throttling capability and linear flow control. Furthermore, they are essential for processes requiring fine and repeatable regulation.
• Reliable Pneumatic Actuator: Provides fast and reliable response in automatic control systems. Likewise, it is intrinsically safe in hazardous environments as it does not require electricity in the actuator.
• Material Versatility: The wide variety of materials allows their use with a great diversity of fluids and corrosion conditions. Therefore, they are suitable for both standard services and applications with toxic or corrosive substances.
• Wide Pressure and Temperature Range: They operate in extreme conditions from -196°C to 565°C and up to 2500LB. Consequently, they are suitable for the most demanding industrial processes.
• 2-Way and 3-Way Configuration: 2-way valves control linear flow, while 3-way valves allow mixing or diverting fluids. In this way, they expand their functionality in complex processes that require greater flexibility.

Applications of special 2-way and 3-way control valves

Chemical and Petrochemical Process Control: Regulate the flow of liquids and gases in reactors, distillation columns, and heat exchangers. Thanks to their internal materials such as duplex steel and titanium, they safely handle corrosive or toxic substances.

Power Generation: Regulate the flow of steam, feedwater, and gases in conventional and nuclear power plants. Therefore, they are the preferred choice in high-pressure and high-temperature applications.

Oil and Gas Industry: Control flow in pipelines, gas pipelines, and refineries with robustness and corrosion resistance. In particular, they stand out in applications where safety and reliability are priorities.

Industrial HVAC Systems: Regulate hot, cold water, and steam for heating, ventilation, and air conditioning in large facilities. Ultimately, they ensure comfort and energy efficiency in large-scale installations.

Compressed Air and Industrial Gas Systems: Regulate pressure and flow in industrial gas distribution networks. Likewise, their wide pressure range makes them suitable for both high and low-pressure systems.

Technical Data Sheet