Type 20 Precision Pneumatic Air Relay

The Type 20 Precision Pneumatic Air Relay from Bellofram PCD is a compact, two-stage, pilot operated 1:1 air relay with positive and negative bias adjustment capability. It accepts a signal pressure and, when combined with bias adjustment, maintains a resultant output pressure with an accuracy and reliability unmatched by any other industry air pressure relays in its price range.

The Type 20 basic pneumatic relay is available with choice of three port sizes. Available high-relief versions (Type 20HR & 20EXHR) provide extra fast “blowdown” for very rapid release of output pressure. The extra relief feature makes this relay suitable for cylinder return stroke actuation, air hoists, and similar applications requiring fast exhaust.

These relays offer extremely accurate and cost effective performance in a small footprint. Their rugged and stable design further includes both positive and negative bias capability.  Type 20 pneumatic relays are ideal for gate actuators, air hoists, disc and shoe brakes, remote positioning devices, valve rotors, control valves, tensioning systems and web tracking systems.

For more information about the Type 20 relay, please select from the buttons below, or please click here for technical assistance.

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Features:

  • Extremely Accurate and Cost-Effective Relay
  • Positive and Negative Bias Capability
  • Small Size
  • Rugged and Stable
  • Basic Relay Available With Choice of Three Port Sizes
  • High Release Versions Available

Applications:

  • Gate Actuators
  • Air Hoists
  • Disc & Shoe Brakes
  • Remote Positioning Devices
  • Valve Rotors
  • Control Valves
  • Tensioning Systems
  • Web Tracking Systems
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