Park brake valves are located in the brake lines between the master cylinders and the brakes. They are used to hold pressure in the brakes of an aircraft to prevent the aircraft from moving when grounded. Park brake valves have two inlet ports or fittings connected to the upstream master cylinders and two outlet ports or fittings connected to the downstream brakes. They are actuated with a control arm that is mechanically attached by a rod or a cable to the cockpit.

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Additional features are often built into or added onto the park brake valve to meet customer requirements. A micro switch or proximity sensor is a common addition that provides feedback to let the pilot know the position of the control arm. Thermal relief valves are also commonly added to allow for pressure relief of the brake hydraulics. Spring loaded accumulators maintain pressure on the brakes and are used when the aircraft may be parked for long periods of time such as overnight. Park brake valves may also have pressure switches installed that electrically close when the brake pressure reaches a certain value and can be set to illuminate an indicator in the cockpit.

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APPLICATIONS

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General aviation, light jets, turboprop passenger and cargo aircraft

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FEATURES AND ATTRIBUTES

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<ul>
	<li>Anodized housing – corrosion protection</li>
	<li>Stop pins for control arm – allows for precise open and closing position of control arm</li>
	<li>Made in America</li>
</ul>

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OPTIONAL FEATURES

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<ul>
	<li>Thermal relief valve</li>
	<li>Proximity switch</li>
	<li>Micro switch</li>
	<li>Accumulator</li>
	<li>Pressure transducer</li>
	<li>Pressure switch</li>
</ul>

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Hydraulics

Parking Brake Valves

60-3A

Park brake valves are designed for long, reliable service life while holding the aircraft stationary in the closed (locked) position. Valve models range from fairly simple devices to more complex models with additional features.

Exploded View 60-3A

Product Exploded View

Product Reference Memo - PRM105 - Rev I - 9-1-2017 - Parking Brake Valve Release Procedure

Product Reference Memo - PRM71 - 11-28-2000 - FAA-PMA Hydraulic Products: Aircraft/Model Eligibility Listing

Product Reference Memo

Technicians Service Guide (rev. 25)

Technician's Service Guide

FAA-PMA Approved / Installed under aircraft Type Certificate

Certification Type

Color

Control Arm Stop Pins

Corrosion-Inhibiting Anodize

Fluid Type

Operating Temperature Range

Piper Aircraft (PA-44-180 Seminole, PA-31-350 Chieftain, PA-31-300 Navajo, PA-31-310 Navajo, PA-44-180T, PA-42-1000 (400LS) Cheyenne IV, PA-31-350 Chieftain,  PA-31-325 Navajo C/R, PA-42 Cheyenne III, PA-42 Cheyenne IIIA, PA-42-720, PA-31T1,  PA-31P, PA-31T2 Cheyenne IIXL)

Platform

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HydraulicsParking Brake Valves60-3A

Fly with Cleveland quality!

Hydraulics Parking Brake Valves60-3A