Type 20 - T20 HR Precision Relay High Relief Capacity
The Type 20 Air Relay is a compact, two-stage,
pilot operated 1:1 relay with positive and
negative bias adjustment capability. It accepts
a signal pressure and combined with the bias
adjustment, maintains a resulting output pressure with an accuracy and reliability unmatched
by any other pressure relay in its price range. High Relief Relays - These relays 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.
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
- Gate Actuators
- Air Hoists
- Disc & Shoe Brakes
- Remote Positioning Devices
- Valve Rotors
- Control Valves
- Tensioning Systems
- Web Tracking Systems
Maximum Supply Pressure
153 psig (10.3 BAR)
Pressure Ranges
2-120 psig
(0.1 – 8.3 BAR)
(0.1 – 8.3 BAR)
Port Sizes
1/8", 1/4", 3/8"
NPT, BSPP, BSPT
NPT, BSPP, BSPT
Sensitivity
1/8" H2O (3.2mm)
Forward Flow Capacity
14 SCFM (400 LPM)
@ 20 psig (1.4 BAR)
signal and 100 psig
(6.9 BAR) supply
@ 20 psig (1.4 BAR)
signal and 100 psig
(6.9 BAR) supply
Exhaust Capacity @ 5 psig (0.4 BAR) above setpoint
10 SCFM (285 LPM)
@ 5 psig (0.35 BAR)
above a 20 psig
(1.4 BAR) setpoint
@ 5 psig (0.35 BAR)
above a 20 psig
(1.4 BAR) setpoint
Output Pressure Ranges
2-120 psig
(0.1 – 8.3 BAR)
(0.1 – 8.3 BAR)
Temperature Range
-20 to 160˚F
(-29 to 71˚C)
(-29 to 71˚C)
Total Air Consumption @ Maximum Output
8 SCFH (4 LPM)
Materials of Construction
zinc alloy, stainless steel, brass, carbon steel, acetal, nitrile
Supply pressure sensitivity
0.005 psig (0.35 mBAR)
per 25 psig (1.7 BAR)
change in supply pressure
per 25 psig (1.7 BAR)
change in supply pressure
Maximum Signal
150 psig
(10.3 BAR)
(10.3 BAR)
Ratio of Accuracy for 12 psig span
<0.5%
Find Your Part Number
Not sure? Call for help. Phone: 304-387-1200
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