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DPF Pressure Pipes

In 2016, we launched our DPF Pressure Pipe range which currently covers in excess of over 600 vehicle fitments. 48% of our DPF range now have the associated Pressure Pipes available for order. We believe new pipes should be fitted with a replacement DPF on all occasions. We also recognise that in some cases, there is a need for DPF Pressure Pipes without requiring the DPF itself. Also included in our DPF range are parts that only have fixed Pressure Pipes, such as the BM11023. In this instance, no separate DPF Pressure Pipe is needed.

Our Pressure Pipes can be identified by the “PP” prefix, followed by the 5-digit reference number of the DPF that the pipe corresponds to (e.g 11005 for a BM11005H), and ending with a suffix of either “A” or “B”, thus PP11005A.

What is a DPF Pressure Pipe?

A DPF Pressure Pipes is a metal tube which connects the DPF unit to the DPF pressure sensor. This allows the sensors to accurately measure the inlet and outlet pressures of the DPF.

As the amount of particulate trapped by the DPF increases, the pressure at the inlet side of the DPF increased in comparison to the DPF outlet. This comparison is used by the sensor to calculate the amount of particulate trapped within the DPF. By measuring this pressure and the DPF temperature, the DPF software can determine if the DPF is becoming blocked and requires regeneration.

There are two variants of a Pressure Pipe – fixed (welded into and supplied with the DPF unit) and detachable (screw in and supplied separately).

The entire pressure pipes range at BM Catalysts is made from high-quality 304 grade stainless steel to ensure optimum durability.

pp11052a

What happens if they break?

Damaged or blocked Pressure Pipes can produce incorrect readings on the DPF pressure sensor which could therefore lead to problems if undetected and unresolved. A faulty Pressure Pipe could be mistaken for a faulty DPF causing wasted time and money if a new DPF is purchased as a result and then still found to give incorrect pressure readings.

Why do they break?

Pressure Pipes are very thin (usually around 8mm in diameter) tubes of metal that are exposed to the elements. Being fitted to the underside of a vehicle means they are susceptible to damage. Due to their slim form, any impairment to the material of a Pressure Pipe can lead to further damage when the pipe is manhandled during removal.