Combined Unloader (Pressure Regulator) / Druckregler 4-7000

Purpose: Automatic control of the working pressure in compressed air brake systems, and the protection of the pipelines and valves against contamination.

Cut-Off-Pressure Original   BD Ref.
  9753001010 0014310606 4-7000
8.1 Bar 9753001100 0014310006  
  0014319806 0014311206  
  DR3200 0014313406  
  DR3206 0481039101  
  DR3236 0481039110  
  DR3238 0481039221  
7.35 Bar 9753001110 0014314106 4-7001
  DR3100 0481039102  
  DR3201 0481039222  
9.00 Bar 9753001430   4-7002

Description

The governor watches reservoir pressure and switches the compressor between loading and idling. It cuts the compressor out at the top pressure and brings it back in when the pressure falls, so the system stays inside its working band without the compressor running against a full tank.

Key data for this version: cut-out pressure 8,1 bar. The Buyukdemir reference is 4-7000.

It belongs to the Combined Unloader / Druckregler range in the Buyukdemir catalogue.

It cross-refers to the original equipment numbers 975 300 101 0, 001 431 06 06, 975 300 110 0, 001 431 00 06, 001 431 98 06, 001 431 12 06, DR 3200, 001 431 34 06, DR 3206, 0 481 039 101, DR 3236, 0 481 039 110, DR 3238, 0 481 039 221.

This is the 8,1 bar version; the nearest sizes in the same range are 8,1 bar (4-7050), 8,1 bar (4-7051), 7,35 bar (4-7001), 7,3 bar (4-7052), 9,00 bar (4-7002).

Manufactured by Büyükdemir Otomotiv in Istanbul, Türkiye, a producer of compressed-air brake and pneumatic components for trucks and trailers since 1957.