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Control Valves

Pneumatic Three Way Control Valve

  • Simple Structure: Equipped with multi-spring diaphragm actuator with simple overall structure
  • Light Weight: Lightweight design for easy installation and maintenance
  • Responsive Operation: Responds quickly to control signals for timely regulation
  • Precise Flow Characteristics: Precisely controls fluid flow characteristics
  • Confluence/Diverter Function: Features both confluence (HMT) and diverter (HDT) forms to meet different process requirements
  • Wide Application: Suitable for multiple industry fields such as chemical, petroleum, and power
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Pneumatic Three Way Control Valve is an indispensable important component in industrial automation control systems, featuring the function of regulating medium flow, pressure and other parameters. The valve is mainly used for regulating interconnected three-way piping occasions, with two forms: confluence (HMT) and diverter (HDT). The pneumatic three-way control valve is equipped with a multi-spring diaphragm actuator, featuring simple structure, responsive operation, and precise flow characteristics. It is widely used for precise control of gases, liquids and other media, maintaining process parameters such as pressure, flow, temperature, and liquid level at set values.

Technical Standards

Item Technical Standard
Valve Size DN15-DN300
Nominal Pressure 1.0, 1.6, 4.0, 6.4 MPa
Operating Temperature -10℃ to +200℃
Actuator Multi-spring Diaphragm Actuator
Signal Range 20-100 kPa
Action Type Air-to-open (FO), Air-to-close (FC)
Flow Characteristic Linear, Equal Percentage
Connection Type Flanged Connection, Threaded Connection

Basic Models

Model Type Features
QLX Pneumatic Three-way Confluence Valve Used for mixing two fluids into one fluid
QLD Pneumatic Three-way Diverter Valve Used for splitting one fluid into two fluids
ZXX Pneumatic Diaphragm Three-way Control Valve Thin-wall window-type valve core structure, compact size
QXM Pneumatic Three-way Control Valve Equipped with multi-spring diaphragm actuator

Main Components Material Table

No. Part Name Material
1 Valve Body Cast Steel, Stainless Steel, Ductile Iron
2 Valve Core Stainless Steel, Carbide
3 Valve Seat Stainless Steel, Carbide
4 Valve Stem Stainless Steel, 316, 316L
5 Packing PTFE, Flexible Graphite
6 Actuator Aluminum Alloy, Cast Iron
7 Spring Carbon Steel, Stainless Steel
8 Diaphragm Synthetic Rubber, Fluororubber

No drawing available.