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relay emergency valve

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Relay Emergency (HV-R04)

Details: Relay Emergency Valve HV-R04 Original No.: 973 001 010 0 Original No.: 973 001 020 0 * Used in the heavy duty trucks, trailers and semi-trailers *...

Harvey Auto Parts Industry Company Limited

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China (Mainland)China (Mainland)

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Cummins Relay Valve of Brake King

Model / Specifications:3527Z-010

Details: Cummins Relay Valve Emergency Relay Valve mainly have the following advantages: 1 Emergency Relay Valve with simultaneous braking func...

Shiyan Lingtong Kangming Automotive Parts Co., Ltd.

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China (Mainland)China (Mainland)

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9710021520 relay emergency valve

Price Range:15.6920.58

Type:relay emergency valve

Material:aluferaluminium alloy

Size:RELAY EMERGENCY VALVE

Details:

Zhuji City Jin Miao auto parts factory

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China (Mainland)China (Mainland)

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relay emergency valve

Model / Specifications:9710021520

Details: COMPANY NUMBER :MRC-R0053 PRODUCT NAME :relay valve ,relay emergency valve ORIGINAL NUMBER :971 002 152 0 QUANLITY CONTROL:ISO/TS 16949,WARRA...

zhuji miracle machinery factory

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China (Mainland)China (Mainland)

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Emergency Relay Valve for Truck Trailer and Heavy Duty

Model / Specifications:Bendix 280375

Standard or Nonstandard:Standard

Structure:Check

Pressure:High Pressure

Power:Manual

Details: Emergency Relay Valve for Truck Trailer and Heavy Duty Professional supplier in Emergency Relay Valve, Unloader Valve, Circuit Protection Valve an...

Suzhou Runmax Co., Ltd.

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China (Mainland)China (Mainland)

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Relay Emergency Valve 9710021520

Model / Specifications:Relay Emergency Valve 9710021520

Details: Product Name: Relay Emergency Valve 9710021520Manufacturer: Kostrong Autoparts Application: DAF ...

Shaoxing Kostrong Autoparts Co., Ltd

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China (Mainland)China (Mainland)

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Relay Emergency Valve

Details: Relay Emergency Valve1)Original No:1202052)Good quality and reasonable price3)Mainly for heavy-duty truck4)We can supply all kinds of Relay Emerge...

Jiaxing Chinawin Import and Export Co., Ltd.

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China (Mainland)China (Mainland)

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Bulldozer D155 Blade Valve (701-43-24002)

Connection Form:Flange

Productivity:5000 PCS/Year

Origin:China

Seal Surface:Parallel Gate Valve

Details:

Zhengzhou Wanxun Industrial Co., Ltd.

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ChinaChina

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high quality and low price slack adjuster

Details: Our company can produce so many products :Spring Brake Chamber,Relay Valve,Relay Emergency Valve,Foot Brake Valve,Four –Circuit Protection V...

Zhuji Dongshen Auto Parts Accessories Factory

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China (Mainland)China (Mainland)

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YJ-6028 Aluminum Spring Parts for Emergency Relay Valve-Auto Parts

Model / Specifications:YJ-6028

Details: ------------------------------------------------------------------------------------------------------------------- YJ-6028 Aluminum Spring Parts...

Zhuji Weilin Machinery Factory

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China (Mainland)China (Mainland)

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YJ-6028 Aluminum Spring Parts for Emergency Relay Valve-Auto Parts

Model / Specifications:YJ-6028

Details: ------------------------------------------------------------------------------------------------------------------- YJ-6028 Aluminum Spring Parts...

Zhejiang Yajia Auto Parts Co., Ltd.

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China (Mainland)China (Mainland)

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AG 3517A AIR BRAKE VALVE-EMERGENCY RELAY VALVE

Model / Specifications:AG 3517A

Details: EMERGENCY RELAY VALVEWe are one manufacturer of brake systerm and have rich experience of export AG 3517AMAX OPERATING PRESSURE: 1MPAOPERATING TEM...

Zhejiang Angu Auto Parts Co., Ltd.

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China (Mainland)China (Mainland)

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relay valve,relay emergency valve for Heavy Trucks,Trailer,Bus

Model / Specifications:ZD NO.: R6403

Brand Name:ZONTON

Details: Products/Services: Spring brake chamber, Clutch servo, Air Brake valve, Relay valve, Air dryer, Unload valve, Protection valve, Hand brake valve,...

Zhejiang Zhongdun Machinery Co., Ltd.

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China (Mainland)China (Mainland)

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emergency relay valve(971 002 152 0/971 002 151 0)

Model / Specifications:971 002 152 0/971 002 151 0

Standard or Nonstandard:Standard

Structure:Safety

Pressure:High Pressure

Power:Air

Details: EMERGENCY RELAY VAVLEA:971 002 152 0/971 002 151 0 PORTS:3-M22*1.5;6-M16*1.5B:9710 0215 10PORTS:1-M22*1.5;8-M16*1.5 MAX OPERATING PRESSURE:1.3MPAO...

Zhuji Guoli Mechanical Co., Ltd.

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China (Mainland)China (Mainland)

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Emergency Relay Valve

Model / Specifications:ABV034-09

Standard or Nonstandard:Standard

Structure:Safety

Pressure:Medium Pressure

Temperature of Media:Normal Temperature

Details: Relay Valve for exportBrand name: INXT ABV034-09OEM: 9710021500Input port: M22x1.5Output port: Z3/8-4

Rui'an Xintian International Import and Export Co., Ltd.

Business Type:Manufacturers

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China (Mainland)China (Mainland)

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relay emergency valve

Model / Specifications:9710021510

Standard or Nonstandard:Standard

Structure:Control

Pressure:Medium Pressure

Power:Solenoid

Details: we can supply relay emergency valve which OEM No. is :9710021510...Place of Origin: CN;ZHE

Zhuji City Fuyida Machinery Co., Ltd.

Business Type:Manufacturers

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China (Mainland)China (Mainland)

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RELAY EMERGENCY VALVE 971 002 150 0

Details: relay valve OEM:971 002 152 0 PORTS:1-2=M22 , 2=4*M16+1*M22 , PORT 4 =M16 COMMENT:ADJUSTABLE 0 BAR TO 1 BARPORTS:1-2=M22 , 2=4*M16+1*M22 , PORT 4...

Zhuji City Jidong Machinery Co., Ltd.

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China (Mainland)China (Mainland)

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relay emergency valve

Details: RUILI NO.: RL3518AH ORIGINAL NO.: 973 001 010 0 PORTS: 1=M22; 2, 4=M22

Ruili Group Co., Ltd.

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China (Mainland)China (Mainland)

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Hot Emergency Relay Valve

Model / Specifications:SAD-8032

Details: 1.High quality with good material and competitive price 2.auto brake valve3.made in china4.Fast delivery and good after sales severice5.Temperatur...

Liangshan County Shun Anda Auto Parts Manufacturing Co., Ltd.

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China (Mainland)China (Mainland)

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Relay Emergency Valve 9710028050

Details: Sell air brake valves(Clutch Master Cylinder, Clutch Servo, Relay Valve, Protection Valve,Air dryer,Slack adjust...) for trucks... ...

Shiyan Chuangshi Automobile Parts Co., Ltd.

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China (Mainland)China (Mainland)

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Factory outlets relay emergency valve 9710021500

Model / Specifications:9710021500

Details: NO:971 002 150 0PORTS:ALL PORTS M22*1.5 We, Zhuji Dongsan Auto Parts Factory is a professional manufacturer and exporter of commercial vehicle pa...

Zhuji Dongsan Auto Parts Factory

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China (Mainland)China (Mainland)

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Related Products
  • Emergency Relay Valve for Truck Trailer and Heavy Duty Emergency Relay Valve for Truck Trailer and Heavy Duty Professional supplier in Emergency Relay Valve, Unloader Valve, Circuit Protection Valve and so on. max operating pressure:1MPA operating pre...
  • relay emergency valve Products/Services: Clutch booster, air brake valve, brake valve, truck part, trailer part, air dryer, unload valve, protection valve, control...
  • relay emergency valve Products/Services: Spring brake chamber, Clutch servo, Air Brake valve, Relay valve, Air dryer, Unload valve, Protection valve, Hand brake valve,...
  • Re-6 Relay Emergency Valve (281860/281865/10119) Relay Emergency Valve Original NO. : 281860/281865/101191.Competitive price2.Short production time3.Package according to clients' special requirement.4.Fully satisfactory after-sales service.5.H...
  • Relay Emergency Valve (SEO110205P) Relay Emergency Valve Original NO.:SEO116205P All Ports:9-NPT3/8";1-NPT3/4" We are a professional manufacturer of brake valve,air dryer ,relay valve,hand brake valve unloading valve,trai...
  • Relay Emergency Valve Relay emergency Valve for GMBrand name: INXT ABV019-09OEM: 281860Input port: Z3/8Output port: Z3/8
  • Relay Emergency Valve (281865) RELAY EMERGENCY VAVLE OEM NO:281865 MAX OPERATING PRESSURE:1.3MPAOPERATING PRESSURE:800KPAWORKING TEMPREATURE RANGE:-40~80DEGREE 1.Competitive price2.Short production time3.Package according to cl...
  • Emergency Relay Valve Relay Valve for exportBrand name: INXT ABV034-09OEM: 9710021500Input port: M22x1.5Output port: Z3/8-4

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Product Summary

A relay emergency valve is the valve fitted to trailers and operates as a Relay Valve during normal service operation. It speeds up the admission and release of large volumes of air for the application and release of brakes on a long wheel base vehicle. However, the relay emergency valve has ad additional emergency function, which will automatically apply the trailer service brakes if the supply line fails. The relay emergency valve usually acts as a relay station to speed up the application and release of trailer brakes. It automatically applies the trailer brakes when the emergency line of the trailer is broken, disconnected, or otherwise vented to the atmosphere if the trailer air brake system is charged.   The relay emergency valve is used on trailers which require an emergency brake application upon breakaway from the truck or tractor. When a tractor is connected to a trailer and the service and emergency lines are opened. The relay emergency valve permits charging the trailer air brake reservoir to approximately the same air pressure as that in the tractor reservoirs.

If a trailer is disconnected from a tractor for loading or unloading or if the trailer is separated from the tractor under emergency breakaway conditions or if the emergency line of the trailer is vented to the atmosphere by other means, the relay emergency valve applies the trailer brakes. This is automatically achieved by using the existing trailer reservoir air pressure. If the trailer is to remain parked under these conditions, the wheels should be blocked to prevent the possibility of a runaway. If you are required to release the emergency brake application on a trailer under these conditions, the trailer reservoir drain valve can be opened or the trailer air brake system can be recharged through the trailer emergency line. You can check the relay emergency valve by moving the tractor protection valve control lever to the emergency position, if tractor protection equipment is installed.

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