Company Details

  • Top Lead International Trading Co., Ltd

  •  [Shandong,China]
  • Business Type:Distributor/Wholesaler , Manufacturer , Trade Company
  • Main Markets: Africa , Asia , Middle East , East Europe , Worldwide
  • Exporter:91% - 100%
  • Description:Howo Brake System Parts,Sinotruk Howo Valves,Valves For Heavy Duty Trucks
Inquiry Basket ( 0 )

Top Lead International Trading Co., Ltd

Howo Brake System Parts,Sinotruk Howo Valves,Valves For Heavy Duty Trucks


Home > Products > TLEAD Brand Howo Spare Parts > Four Circuit Protection Valve

Four Circuit Protection Valve

Share to:  
    Payment Type: L/C,T/T,Western Union
    Incoterm: FOB,CFR,CIF
    Min. Order: 1 Piece/Pieces
    Delivery Time: 15 Days

Basic Info

Model No.WG9000360523




Truck ModelSinotruk Howo


Place Or OriginMade By Top Lead China

Additional Info

PackagingTLEAD package



Place of OriginChina

Supply Ability5000PCS/MONTH


HS Code8481802190


Payment TypeL/C,T/T,Western Union


Delivery Time15 Days

Product Description


Part Number(s): 4640023300 / WG9000360523

Top Lead company supplies Sinotruk accessories, other original authentic Sinotruk Howo spare parts, The function of the four-loop protection valve is to divide the whole vehicle air brake system into four circuits that are interrelated and independent of each other. When any circuit fails (such as broken or leaked), it does not affect the normal operation and filling of other circuits.

The Howo trucks's braking system uses four-circuit protection valve, the purpose is to provide reliable safety for vehicle safety. In actual use, the main faults are mainly the following:

(1) A pipe is not ventilated or leak, should check the four-way protection valve, check valve is stuck, or diaphragm rupture. The main cause of these failures is: the airway contains a lot of water, the cavity produces a lot of corrosion, the valve stuck, rusty foreign body off.
(2) The phenomenon of air pressure is relatively rare, because the four-way protection valve standard air pressure has been adjusted before leaving the factory, where all the failure is through maintenance and replacement of internal parts, such as diaphragm, seat, piston assembly Quality and improper adjustment caused by;
After the damage on the way to drive, in order to facilitate the demolition, please the corresponding parts of the location of the mark, decomposition can be divided into four steps: First, remove the protective cover on the bonnet, remove the adjustment screw on the bonnet; Is to remove the cross screw on the valve cover; third is to remove the valve body parts, such as valve cover, adjust the screw seat, the spring, spring seat, diaphragm, valve assembly, the next spring. Fourth, the various parts of the inspection, after cleaning the provisions of the various parts of the lubrication, the assembly should pay special attention to the diaphragm anyway, red face toward the _L. Black side down, when the pressure adjustment to meet the requirements must be installed after the protection Plug.

Four Circuit Protection Valve WG9000360523 WABCO model: 934 714 010 0 Technical Sheet
1. Max. operating pressure: 13 bar
2. Opening pressure 21: 6,9±0,3 bar
3. Opening pressure 22: 6,9±0,3 bar
4. Opening pressure 23: 7,0±0,2 bar
5. Opening pressure 24: 6,9±0,3 bar
6. Port 1: M 22x1.5
7. Port 21: M 16x1.5
8. Port 22: M 16x1,5

Cross Interchange Parts

Factory Number
WABCO 9347140100
AIR FREN 06.559130
DT 3.72085
DAF 1518191
WABCO 934 714 211 0
IVECO 9948 0157
MAN 81.52151.6073

We are specialized in the distribution of Sinotruk howo part . Online sales are our main business and our strength.

Products and Quality

We can guarantee you the Genuine quality 100% which OEM by Top Lead

Price and Lead time

We are a Sinotruk and WABCO spare parts specialists. Prices which we offer are fair, transparent, as one of the signed wholesaler of SINOTRUK part and Howo spare part, we are happy to deliver quickly and without any problems abroad.


We would be pleased to advise you in detail and competently, please check my contact information in this page and contact me directly.

9347140100 wabco protect valve

Our Services

1. 100% Original WABCO products. No copy!
2. Professional packing service.
3. You can choose Sea way or air freight or express way, we garantee you the lowest cost than other supplier.




Looking for ideal Howo Brake System Parts Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the Sinotruk Howo Valves are quality guaranteed. We are China Origin Factory of Valves For Heavy Duty Trucks. If you have any question, please feel free to contact us.

Product Categories : TLEAD Brand Howo Spare Parts

Email to this supplier
  • *Subject:
  • *Messages:
    Your message must be between 20-8000 characters
Communicate with Supplier?Supplier
Amy Ms. Amy
What can I do for you?
Contact Supplier