Four Circuit Protection Valve M3506831 is a pneumatic brake-system control component designed for compatible heavy-duty trucks and commercial vehicles. It separates and manages multiple air-brake circuits, helping maintain independent circuit pressure and supporting the reliability of the vehicle's compressed-air braking system.
The four-circuit configuration is particularly valuable in multi-circuit air brake architectures, where a pressure loss or fault in one circuit should not unnecessarily compromise the remaining circuits. With part number M3506831, this product is suitable for truck parts distributors, air-brake specialists, repair workshops, fleet maintenance companies, and international aftermarket buyers.
Product Name: Four Circuit Protection Valve
Part Number: M3506831
Four-circuit pneumatic protection design
Helps separate individual air-brake circuits
Supports pressure distribution within the braking system
Helps limit the impact of pressure loss in an individual circuit
Designed for commercial vehicle pneumatic brake applications
Suitable for replacement and brake-system maintenance
Compact configuration for integration into air-brake systems
Suitable for aftermarket distribution and fleet servicing
Available for wholesale and bulk purchasing
The Four Circuit Protection Valve M3506831 is intended for compatible commercial vehicle compressed-air brake systems.
In a multi-circuit air-brake system, the protection valve helps distribute compressed air to separate circuits while providing a degree of isolation between them. This arrangement is important for maintaining the availability of other pneumatic circuits if pressure in one circuit drops below the required level.
The valve may be inspected when there is abnormal air-pressure distribution, slow pressure build-up, unexpected pressure loss, or irregular operation of the vehicle's pneumatic system. However, similar symptoms can also originate from air leaks, damaged hoses, compressor problems, reservoirs, or other valves.
For fleet maintenance and repair operations, M3506831 can be stocked as a replacement component for compatible four-circuit pneumatic systems.
| Item | Specification |
|---|---|
| Product Name | Four Circuit Protection Valve |
| Part Number | M3506831 |
| Product Category | Pneumatic Brake System Component |
| Application | Heavy-Duty Truck / Commercial Vehicle |
| Main Function | Multi-Circuit Air Pressure Protection |
| Product Type | Replacement Protection Valve |
| Operating Medium | Compressed Air |
| Circuit Configuration | Four Circuit |
| Installation | Vehicle Air-Brake System |
| Compatibility | To Be Confirmed by Application |
| Supply Type | Wholesale / Bulk Supply |
| Customization | Available for Qualified Projects |
| Origin | China |
| Supplier | SINOSENCO (SHANDONG) TRANSMISSION CO., LTD |
The precise specifications of M3506831 should be confirmed against the original valve and vehicle application. Relevant parameters may include:
Opening pressure
Closing pressure
Operating pressure range
Maximum allowable pressure
Number of circuits
Air inlet configuration
Air outlet configuration
Port thread specifications
Valve-body dimensions
Mounting arrangement
Operating temperature range
Sealing material
Component weight
Customers can provide the original valve, vehicle model, pneumatic-system information, product photographs, port dimensions, or technical drawings for accurate matching.
SINOSENCO can evaluate customized four-circuit protection valve requirements for OEM-related projects, distributors, fleet customers, and high-volume aftermarket buyers.
Potential customization areas include:
Pressure settings
Port configuration
Thread specifications
Valve-body dimensions
Mounting arrangement
Sealing materials
Operating-temperature requirements
Surface treatment
Product marking
Packaging
For customized pneumatic brake components, the required pressure parameters and circuit configuration should be clearly specified. Customers can provide air-brake system drawings, original samples, technical specifications, port dimensions, and operating-pressure requirements for evaluation.
Private-label packaging, customer labels, individual boxes, branded cartons, product markings, and export packaging can also be arranged according to order volume.
Four Circuit Protection Valve M3506831 is a pneumatic valve designed to manage and separate four air-pressure circuits within compatible commercial vehicle air-brake systems.
It distributes compressed air between multiple circuits and helps isolate individual circuits when pressure conditions change, supporting continued operation of the remaining pneumatic circuits.
Multi-circuit pneumatic systems provide greater system separation. If one circuit experiences a pressure problem, the other circuits can be better protected from an immediate loss of pressure.
Symptoms may include abnormal air-pressure distribution, slow pressure build-up, unexpected pressure loss, air leakage, or irregular behavior in one or more pneumatic circuits.
Yes. Because the valve forms part of the vehicle's compressed-air braking system, a malfunction can affect pressure management. The entire pneumatic system should be professionally inspected.
No. Pressure settings, port threads, circuit configuration, mounting dimensions, and air-brake architecture vary between vehicles. Compatibility must be verified before installation.
Provide the M3506831 part number together with the vehicle model, air-brake system information, original valve photograph, port dimensions, or physical sample.
Yes. Bulk supply is available for commercial vehicle parts distributors, wholesalers, importers, air-brake repair specialists, and fleet maintenance companies.
For qualified OEM and high-volume projects, customization can be evaluated for pressure settings, port configuration, thread specifications, mounting dimensions, seals, and other application requirements.
Yes. An original valve can help verify port arrangement, dimensions, pressure specifications, mounting structure, and other application-specific characteristics.
The air compressor, reservoirs, air lines, fittings, brake valves, and potential leakage points should also be checked to ensure that the valve is actually the source of the pressure problem.
Yes. Customer labels, individual packaging, branded cartons, product markings, and export packaging can be arranged according to project requirements.
Please provide M3506831, required quantity, vehicle model, air-brake system information, destination country, and packaging requirements. An original valve photograph, sample, or technical drawing is recommended for accurate matching.
