Shacman Brake Master Valve DZ96189360079

Part No.: DZ96189360079

Name: Air Brake Master Valve (Foot Brake Valve)

OEM: SHACMAN, Original spare part for Delong heavy trucks

Material: Aluminum alloy valve body, internal rubber diaphragms and spring assemblies

Type: Dual-circuit air brake master valve with two independent output circuits for safety redundancy. It controls the service air brake system of the whole vehicle by depressing the brake pedal.Function & Working Principle

Dual-chamber output: Front axle circuit + Rear axle (trailer) circuit. If one circuit fails, the other circuit can still maintain basic braking performance.

Pedal force proportional control: The deeper the pedal stroke, the higher the output air pressure.

Ports: 4 air ports (2 inlet ports, 2 outlet ports), connected to air reservoirs and front/rear axle brake pipelines.

Installation: Mounted under the cab pedal bracket.

Common Faults

Soft brake pedal, slow return or pedal fails to rebound → Damaged internal diaphragm or failed return spring

Air leakage after parking, continuous exhaust from valve → Worn sealing parts

Unilateral weak braking or insufficient air pressure in one circuit → Single chamber damage

Market Reference

Retail price of original OEM part: 160–200 CNY; Aftermarket replacement: 70–130 CNY, lower price for bulk purchase.

Warranty: Normally 6 months for original parts; 3 months for aftermarket parts (varies by supplier).

Replacement Reminder

Distinguish similar part numbers: DZ96189360079 looks similar to DZ93189360034, DO NOT interchange arbitrarily. Always check the vehicle chassis BOM.