Products Catalog
The Airflex quick release valve (QRV) is a pneumatic in-line, three-way valve designed to automatically close upon pressurization and open to exhaust when a pressure drop occurs in the supply line. The valve provides an exhaust port close to the pressurized chamber of the device being controlled rather than exhausting through long supply lines and/or control components. The end result is a reduction in lag time between the signal to exhaust and response.
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Quick Release Valves

Quick Release Valves
Quick Release Valves

Quick Release Valves
Quick Release Valves

Quick Release Valves
Quick Release Valves

Quick Release Valves
Size N/A 3/8 N/A 1/2 N/A 3/4 N/A 1
Maximum Operating Pressure N/A 150 psi10.3 bar
Minimum Sealing Pressure N/A 2 psi0.14 bar
Operating Temperature Range N/A -40 to 49 ºC-40 to 120 ºF
Mean Life N/A Over five million cycles at 75 psi (5.2 bar) and 80 ºF (27 ºC).
Diaphragm Material N/A Polyurethane
Housing Material N/A Zinc alloy
Inlet Port Thread N/A 3/8-18
Tubing Outside Diameter N/A 0.500 in N/A 0.625 in N/A 0.750 in N/A 1.000 in
Cylinder Port Thread N/A 3/8-18 N/A 1/2-14 N/A 3/4-14 N/A 1-11 1/2
Flow Capacity (Inlet to Cylinder)1 N/A 121 ft³/min3.4 m³/min N/A 172 ft³/min4.9 m³/min N/A 287 ft³/min8.1 m³/min N/A
Flow Capacity (Cylinder to Exhaust)2 N/A 206 ft³/min5.8 m³/min N/A 256 ft³/min7.5 m³/min N/A 376 ft³/min17.2 m³/min N/A
Muffler Part Numbers N/A 414915 N/A 414915 N/A 414915 N/A 305018
Dimension D N/A 2.10 in53 mm N/A 2.50 in64 mm N/A 2.85 in72 mm N/A 3.38 in86 mm
Dimension D1 N/A 3.52 in89 mm N/A 3.92 in100 mm N/A 4.27 in108 mm N/A 6.04 in153 mm
Dimension D533 N/A 0.31 in8 mm N/A 0.34 in9 mm N/A 0.34 in9 mm N/A 0.38 in10 mm
Dimension H N/A 1.93 in49 mm N/A 2.18 in55 mm N/A 2.33 in59 mm N/A 2.94 in75 mm
Dimension L1 N/A 1.42 in36 mm N/A 1.42 in36 mm N/A 1.42 in36 mm N/A 3.09 in78 mm
Dimension L2 N/A 0.56 in14 mm N/A 0.63 in16 mm N/A 0.74 in19 mm N/A 0.81 in21 mm
Dimension M N/A 0.95 in24 mm N/A 1.10 in28 mm N/A 1.28 in33 mm N/A 1.61 in41 mm
Dimension O4 N/A 0.500 in12.7 mm N/A 0.625 in15.9 mm N/A 0.750 in19.1 mm N/A 1.000 in25.4 mm
Dimension O15 N/A 3/8-18 N/A 1/2-14 N/A 3/4-14 N/A 1-11 1/2
Dimension O3 N/A 0.43 in11 mm N/A 0.56 in14 mm N/A 0.67 in17 mm N/A 0.94 in24 mm
Dimension O4 N/A 3/4-16 N/A 7/8-14 N/A 1 1/16-16 N/A 1 5/16-16
Dimension P N/A 1.26 in32 mm N/A 1.44 in37 mm N/A 1.56 in40 mm N/A 1.94 in49 mm
Dimension U16 N/A 1.17 in30 mm N/A 1.33 in34 mm N/A 1.49 in38 mm N/A 1.90 in48 mm
Dimension U27 N/A 2.47 in63 mm N/A 2.63 in67 mm N/A 2.80 in71 mm N/A 4.50 in114 mm
Dimension U58 N/A 2.00 in51 mm N/A 2.15 in55 mm N/A 2.52 in64 mm N/A 2.75 in70 mm
Dimension W2 N/A 1.36 in35 mm N/A 1.49 in38 mm N/A 1.56 in40 mm N/A 2.00 in51 mm
Quick Release Valve Options N/A Diaphragm & End Cap Kit - DP Diaphragm, Muffler & End Cap Kit - DQ with Inlet Pipe Thread - DG with Inlet Pipe Thread & Muffler - DT with Metal Sleeve - DE with Metal Sleeve & 1/4 Pipe Adapter - DM with Metal Sleeve & Muffler - DS with Metal Sleeve & Pipe Adapter - DL with Rubber Sleeve - DF with Rubber Sleeve & Muffler - DR N/A Diaphragm & End Cap Kit - DP Diaphragm, Muffler & End Cap Kit - DQ with Inlet Pipe Thread - DG with Inlet Pipe Thread & Muffler - DT with Metal Sleeve - DE with Metal Sleeve & 1/4 Pipe Adapter - DM with Metal Sleeve & Muffler - DS with Metal Sleeve & Pipe Adapter - DL with Rubber Sleeve - DF with Rubber Sleeve & Muffler - DR N/A Diaphragm & End Cap Kit - DP Diaphragm, Muffler & End Cap Kit - DQ with Inlet Pipe Thread - DG with Inlet Pipe Thread & Muffler - DT with Metal Sleeve - DE with Metal Sleeve & 1/4 Pipe Adapter - DM with Metal Sleeve & Muffler - DS with Metal Sleeve & Pipe Adapter - DL with Rubber Sleeve - DF with Rubber Sleeve & Muffler - DR N/A Replacement Kit - BZ Replacement Kit with Muffler - DX with 1-11 1/2 Pipe Threads Both Ports - BF with Pipe Adapter - BR with Pipe Adapter & Muffler - CA with Steel Sleeve - BD with Steel Sleeve & Muffler - BE
Air Quality N/A Clean and dry to avoid contamination of housing and diaphragm. Any additive used in air supply must be compatible with valve materials.
Manufacturer N/A Eaton-Airflex
  • 1 Flow Capacity (At 100 psi (6.9 bar) inlet pressure with full pressure drop.)
  • 2 Flow Capacity (At 100 psi (6.9 bar) inlet pressure with full pressure drop.)
  • 3 Depth of tube insertion.
  • 4 Outside tube diameter.
  • 5 American Pipe Thread
  • 6 Swing radius.
  • 7 Swing radius.
  • 8 Swing radius.