Air Components Used On Air-Over-Hydraulic Panels
Protection Valve
Protection Valve A24912
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The protection valve is a pilot operated check valve, used in
conjunction with a timer valve, to coordinate application of
parking brakes in type AHM-HRC and AHM-ERC system panels. With
normal minimum 65 psi pressure at control port B, service brake
ports E to D and parking brake release ports A to C are open.
When pressure at B drops to 40 psi, the valve closes port A to C
and exhausts C. When pressure at B drops to 30 psi, the valve
closes port E to D and exhausts D. |
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SERVICING THE VALVE
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The valve must be replaced if it should fail to activate combination braking or
should a consistent air leak develop at the exhaust port. |
REPLACEMENT UNITS A24912
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Valve Body Springtite Cap Screw (4 used) (10-24x7/8) Cap, Inlet Diaphragm Plunger Assy "O" Ring Spring Clip, Retainer Retainer, Spring Spring Valve Assy, Exhaust |
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12 13 14 15 16 17 18 19 20 21 |
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Springtite Cap Screw (2 used) (1/4-20x3/4) Cap, Applicaton Gasket Valve Assy, Inlet Spring Valve Guide "O" Ring "O" Ring Spring Valve and Seat Assy |