Why choose us

Excellent Team

Our factory has professional technicians team and excellent sales team, which can help us to provide our clients good quality and perfect service.

Quality Assurance

ISO 9000 certificate of conformity of quality management system certification; certificate of utility model patent; SGS gold plus supplier assessment certificate.

Reputation

A company with a positive reputation is more likely to attract customers. Reputation is built through consistent quality service or products, good customer relations, and reliability.

Production Market

Our products are exported to over 100 countries in Southeast Asia, Europe, Africa, America, and other regions, as well as domestic automotive after-sales markets and repair shops. The annual transaction volume exceeds 20 million yuan.

 

Type

TRACTOR PROTECTION VALVE

Place of Origin

Zhejiang, China

Purpose

For replace/repair

OE NO.

065706

K065706

Application

TRAILER SYSTEM

Single Box Gross Weight

0.619 KGS

Single Box Net Weight

0.570 KGS

Single Box Size

16.5 CM*11.7 CM*9.7 CM

 

Features of Tractor Protection Valve
 

Trailer Control Port (Primary):

1/2" NPT

Trailer Supply Port (Primary):

1/2" NPT

Tractor Control Ports (Primary & Secondary):

Two 3/8" NPT ports for dual-circuit brake control

Tractor Supply Port:

1/4" NPT for air input

Stop Light Switch Port:

1/4" NPT (activates trailer brake lights upon braking)

Auxiliary Port:

1/4" NPT for additional functions

 

Quick Visual Inspection of Tractor Protection Valve
TP-3DC Tractor Protection Valve

Leaks:

Any fluid dripping or seeping around the valve, connecting pipes, or fittings Even minor leaks indicate a potential problem.

279000 Valve

Damage:

Bumps, cracks, or dents on the valve or its connections Damage compromises its structural strength.

07-011385 valve

Corrosion:

Rust or corrosion, particularly in weather-exposed areas Corrosion weakens the valve's integrity.

TP-3DC Tractor Protection Valve

Secure Connections:

Are all fittings and pipes firmly connected Loose connections are prime leak candidates.

 

Tractor Protection Valve: A Detailed Procedure

Preparation:

Gather necessary tools, ensuring your vehicle is safely parked and secured. Disconnect the air supply before proceeding.

Mounting:

Securely attach the TPV to its designated mounting point, usually located near the back of the cab. Double-check for a firm and secure connection.

Air Line Connections:

Connect the air lines, ensuring all connections are tight and secure. Avoid cross-threading to prevent air leaks, a significant cause of braking issues.

System Testing:

After installation, conduct a thorough system check for leaks and verify proper valve operation. Refer to your owner's manual for specific testing procedures.

 

Packing And Shipping

 

productcate-1200-960

 

FAQ

Q: If accessories are urgently needed, can they be supplied quickly?

A: We have an emergency parts supply mechanism and will arrange shipment as soon as possible to meet your needs. Please consult customer service for specific time.

Q: How do you control product quality?

A: 1) Each production batch will have a task list and a flow list.
2) Each batch of products will go through the first inspection, random inspection and final inspection, three processes to control the quality.

Q: Can I get samples?

A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost. If we don't have the goods in stock, we can deal with a small batch first. If you feel that our products meet your requirements, then you can cooperate with us for large orders.

Q: How does the factory control product quality?

A: Our factory has a strict quality control system, and every link from raw material procurement to finished product delivery undergoes strict inspection.

Q: Does the factory accept visits?

A: Yes, we welcome customers to visit our factory, but please make an appointment in advance so that we can prepare for the reception.

Q: What is the purpose of the tractor protection valve?

A: The tractor protection valve keeps air in the tractor or truck brake system should the trailer break away or develop a bad leak. The tractor protection valve is controlled by the "trailer air supply" control valve in the cab. The control valve allows you to open and shut the tractor protection valve.

Q: What is the PSI for the tractor protection valve?

A: When the pressure in the supply line reaches 45 psi, the service line port of the tractor protection valve opens. This allows application air pressure to travel down the service line to the trailer when a brake application is made.

Q: What is the main function of the tractor protection valve?

A: The tractor protection valve controls the air supply to the trailer brakes. During this test, the driver will simulate a major loss of air in the trailer to test the tractor protection valve operation. Ensure that the wheel chocks are in place.

Q: Will the tractor protection valve close and the trailer emergency?

A: A major leak in the emergency line will cause the tractor protection valve to close and the trailer emergency brakes to come on. But the brakes will hold only as long as there is air pressure in the trailer air tank. Eventually, the air will leak away and then there will be no brakes.

Q: What happens when the tractor protection valve is closed?

A: When the tractor protection valve closes, it stops any air from going out of the tractor. It also lets the air out of the trailer emergency line. This causes the trailer emergency brakes to come on, with possible loss of control.

Find professional tractor protection valve manufacturers and suppliers in China here! We warmly welcome you to buy bulk tractor protection valve in stock here from our factory. Contact us for quotation.

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