Signal Processing Valves
Description
Flow Controls for Precision Process Control
What are Signal Processing Valves?
Signal processing valves (also called logic valves) are an essential component in pneumatic automation systems. They allow machinery and processes to make logical decisions based on the presence, absence or combination of compressed air input signals. Common signal processing valves include shuttle valves, AND gates, and OR gates.
Types of Signal Processing Valves
There are two main types of signal processing valves:
- Shuttle Valves function like an OR gate, allowing output when either input is pressurised. They route air flow to the output port.
- AND/OR Gates only produce an output signal if their logical conditions are met. AND gates output when both inputs are pressurised, while OR gates output if either input is pressurised.
Dimensions and Specifications
TecnAir signal processing valves have industry-standard threaded G1/8 ports for compatibility. Table 1 shows common models and their specifications:
| Model | Input 1 Port | Input 2 Port | Output Port |
| Shuttle Valve | G1/8 | G1/8 | G1/8 |
| AND Gate | G1/8 | G1/8 | G1/8 |
| OR Gate | G1/8 | G1/8 | G1/8 |
All wetted parts are brass for corrosion resistance. Maximum operating pressure is 1000kPa (10 bar). Compressed air, nitrogen or other industry-compatible gases can be used as the media.
Contact Us
If you need assistance selecting or applying signal processing valves for your pneumatic control needs, don’t hesitate to contact the engineering team at MasterMac2000 in Queensland. Our Brisbane-based team can help optimise your system design, integration, commissioning and support. Give us a call today to discuss how signal valves could improve your processes.
Additional Example Specifications
Quick Exhaust Valves Specifications
| Model | Threaded Port | Flow Rate (Nl/min) |
| VSR-1 | G1/8 | 700-900 |
| VSR-2 | G1/4 | 1200-2000 |
| VSR-3 | G3/8 | 3500-5000 |
| VSR-4 | G1/2 | 3500-5000 |
| VSR-5 | G3/4 | 5200-7500 |
Gate Logic Specifications
| Model | Port Sizes | Type | Number of Inputs/Outputs |
| AM-5160 | G1/8 | AND Gate | 2 inputs, 1 output |
| AM-5161 | 4mm push-in fitting | AND Gate | 2 inputs, 1 output |
| AM-5162 | G1/8 | OR Gate | 2 inputs, 1 output |
| AM-5163 | 4mm push-in fitting | OR Gate | 2 inputs, 1 output |
