065067 | Genuine Bendix® Quick Release Valve

Description

The function of the Bendix® QRN™ quick release valve is to

“speed up” the exhaust of air from the actuators it serves. It

is generally mounted on the vehicle axle midway between

the two actuators connected to it.

In the standard (Refer to Figure 1) QRN valve, a flat circular

diaphragm is installed between the nonmetallic upper body

and stamped steel lower body. An o-ring seals the two body

halves which are held together using four 1/4" machine

screws and flange nuts.

In its standard configuration, the QRN valve is supplied with

a 1 psi (6.9 kPa) maximum differential. For example, with

supply pressure at 10 psi (68.9 kPa) delivery pressure is 9

psi (61.8 kPa). Higher differential pressures are available

for special applications and are obtained by the addition

of a spring and diaphragm follower to the standard QRN

valve. Refer to Figure 1 - Insert A.

Various pipe thread sizes are available for the single supply

port and two delivery ports of the QRN valve. Mounting

the valve is accomplished via two 11/32" diameter holes

on 1-1/2" centers.