Pressure Converters repair kits

Pressure converter repair kits and components.

6 product lines · ManuMark 2026 catalogue

Fitting notice: Air brake components must be fitted by a qualified technician and matched to your vehicle’s exact part number.

6 products

HALDEX Pressure Converter (Mineral Oil)

MM33125

Pressure Converters · Catalogue page 90

Product details

RN55P Also MIDLAND N4170 F Includes O-Rings

HALDEX Pressure Converter (Mineral Oil)

MM33125/1

Pressure Converters · Catalogue page 90

Product details

RN55AW 6" N4286 Includes O-Rings

HALDEX Pressure Converter (Brake Fluid)

MM33125/B

Pressure Converters · Catalogue page 90

Product details

RN55P Also MIDLAND Includes O-Rings

HALDEX Pressure Converter

MM33128

Pressure Converters · Catalogue page 90

Product details

4 1/2" Cylinder 114.3mm POT Also MIDLAND Includes O-Rings & U-Seals

WABCO Pressure Reducing Valve

MM33154

Pressure Converters · Catalogue page 91

Product details

VALVE No. 475 010 3000 475 010 3010 475 010 4000 475 010 0012

WABCO Pressure Limiting Valve

MM33190

Pressure Converters · Catalogue page 91

Product details

VALVE No. 475 015 039 0 KIT No. 475 015 001 2 475 015 061 0

About pressure converter repair kits

Pressure converters translate air pressure into hydraulic pressure (or vice versa) for brakes and auxiliary systems.

When to replace

Fluid leaks, air at the hydraulic side or loss of output pressure show worn seals inside the converter.

What's in the kit

Kits supply the piston seals, O-rings and diaphragms for the converters listed. All 6 pressure converters lines are manufactured by Pitchline Engineering in an ISO 9001 environment in Pinetown and supplied from our Pinetown branch across South Africa.

Pressure Converters questions

What is a brake pressure converter?

A unit that converts air pressure to hydraulic pressure, commonly used in air-over-hydraulic systems.

Can pressure converters be overhauled?

Yes, with a repair kit, provided the bore is serviceable.

Where are ManuMark kits manufactured?

By Pitchline Engineering in Pinetown, KwaZulu-Natal.