Protect-O

Dirt guard in the coupling head

Small cause, large effect: the pneumatic palm couplings of an uncoupled trailer are usually left open even though they can be capped. This allows dust, insects and other pollutants to enter the coupling and hinder the pneumatic functioning. The solution to the problem is Protect-O.

A sophisticated rubber diaphragm that closes automatically when the connection with the tractor is terminated. The diaphragm protects the pneumatic system from contamination and reopens upon contact with compressed air.

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Key benefits

Cost effective compared to conventional coupling heads
With a line filter integrated
Easy to retrofit
With rubber, diaphragm closes automatically when uncoupling
Test point in according to ISO-Norm: 3583-1984
Compatible with all products corresponding to the same norm

What sets us apart

The pneumatic palm couplings of an uncoupled trailer are usually left
open, even though they can be capped. This is what happens: Pneumatic functioning may be hindered by such impurities, which have no place in the pneumatic system.
The patented Protect-O palm coupling by Haldex solves this problem. As simple as it is effective, the system automatically closes the opening to the palm coupling as soon as the air hose is disconnected.

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Product catalogue

Quick and easy access to the full range of Haldex products. Each part number shows the product’s technical specification, price and picture.

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Technical Documentation

Our extensive database of technical documentation contains all relevant information on our products.