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Quick Details

  • Condition: New
  • Type: Piston
  • Configuration: Stationary
  • Power Source: Gasoline
  • Lubrication Style: Lubricated
  • Place of Origin: Hunan, China (Mainland)
  • Brand Name: Jianeng b4/770 air compressor unloader valve
  • Model Number: b4-770n ac compressor unloader valve kit
  • Voltage: 24V
  • Dimension(L*W*H): 379 X 313 X 375 MM
  • Weight: 32.5KG
  • Certification: ISO9001:2008
  • Nature: Factory,Manufacture,manufacturing,manufacture,supply,supplier,OEM
  • Swept Volume: 655,650,560,554,470,466,390,385,647,558,475,400,970,770 cc
  • Manufacturing Technique: Soldering,Drilling,vehicle processing,shot,sandblasting,milling,test
  • Sales: hot sale,good sale,2014,new,china,chinese,cheap bearing
  • Samples: no MOQ,charged samples, small order acceptable
  • material: steel, Aluminum alloy, brass,Stainless steel,copper,Iron,Bronze
  • spare parts: valve plate,gasket,bearing,air compressor,seal,piston,connecting rod
  • customized: For standard size is available, other size is as per your requirements
  • Used for:: Bus, big bus,vehicles,Double-decker bus,coach,van,truck,car
  • Length of bus: 7m,8m,9m,10m,11m,12m,13m,13.5m Bus,Double decker bus

Packaging & Delivery

Packaging Details 1 set/carton
Delivery Time It is about 3-7 working days. It depends the quantity
Bus air conditionner Compressor 
Product Description

B4-770N compressor is used for bus air conditioner, it suitable for 7meters to 13.5 meters bus and double-decker bus.

Create a healthy,comfortable,environment friendly and fashionable travel environment.(Suit for CHINESE Yutong, Kinglong, etc, KOREAN Hyundai, Daewoo, JAPANESE Hino, Suzuki, UD, NISSAN, Toyota,etc. EUROPEAN Scania, Caterpillar, Volvo, Benz, etc.)

 Compressor details photos



Frame Structure


Technical Data


Number of cylinders / Bore / Stroke4 / 70 mm / 49 mm
Swept volume770 cm³
Displacement                          (1450/3000 ¹/min)65.6 / 135.7 m³/h
Mass moment of inertia0,0043 kgm²
Weight32.5 kg
Permissible range of rotation speeds R134a 1)500 - 3500 ¹/min
Max. permissible pressure (LP/HP) 2)19 / 28 bar
Connection suction line SV35 mm - 1 3/8 "
Connection discharge line DV35 mm - 1 3/8 "
LubricationOil pump
Oil type R134a, R404A, R407C, R507FUCHS Reniso Triton SW 68
Oil charge2,0 Ltr.
Dimensions379 / 313 / 375 mm
Length / Width / Height




Testing Report




Q: Are you a factory?

A: Yes,We are a factory.


Q: What is your minimum order quantity ?


A:MOQ is 1 PC


Q: What about your delivery time?






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China (Mainland) | Manufacturer, Trading Company
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