These are double circuit brake valves. When the driver applies the brake using the pedal, a part of the two pistons moves inside the brake valve closing the valve exhaust and opening ducts inside.
It allows passing air pressure and delivers it to the rear and front brake systems.
The pressure quickly increases in the brake chambers and applies the force to the push rod, transferring the force to the S-Cam or air disc brakes.
When the driver removes the force at the brake valve, the inner spring returns to its original location allowing vent the air in the valve and in the delivery lines to the the exhaust hole.
It has two separate circuits for service and secondary breaking.
Breaking ability is maintained in case of one circuit fails.
The E-7 is a firewall mounted suspended pedal foot valve.
- Dual circuit foot valves.
- It is used in dual circuit air brake systems mandated by FMVSS-121.
- Supply: 1/4" (1)
- O-Ring sealed flange ports (4)
- Delivery: 1/4" (1)
- Threaded supply and delivery ports for both circuits are located on the back of the valve.
Comes with Safety Caps to Protect the Threads and Mechanism prior Installation.
May also Work as a Replacement for Part: WA284760, Automann 170.284760, Keene K284760, Velvac 034040, Bendix 284760N, Bendix 284760, Euclid E-BN284760N, Dayton AV284760, Bendix 284760R, Bendix 284760RX. Replaces 282410, 283300, 284350, 284760, 285146, 285147, 5000989, 5015969, K020295, K024666, Newstar S-A146.
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and reproductive harm. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).