Instrument Filters

Filters, Filter Dryers, Dumps, and Accessories

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Welker F-4 Filter/Dryer-Coalescer

The Welker F-4 Filter/Dryer is designed for use in pipelines and systems where it is required to filter and to remove moisture and aerosols from gas that is to be used on controllers and instruments. The F-4 features a spin-on replaceable cartridge and a large free liquid fallout volume.

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Welker F-5 Filter/Dryer

The Welker F-5 Filter/Dryer is designed for use in pipelines and systems where it is required to filter and to remove moisture and aerosols from gas that is to be used on actuators and instruments.
The F-5 features a spin on replaceable cartridge and a large free liquid fallout volume. The standard cartridge has a primary hydrophobic, secondary and a final 4 micron filter. A combination
silica gel and activated carbon desiccant is available as standard with and alternative Iron Sponge is available for H2S applications.

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Welker F-23 Low Pressure Filter Dryer

Low pressure application
Filtration and drying in one unit
1/4" NPT connections
Ideal for distribution company applications
Quick canister replacement
200psi maximum inlet
Silica Gel standard
Aluminum construction

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Welker DA-1 Instrument Air Dehydration Assembly

This ideal protection for pneumatic controllers is another Welker Original Product design. The DA-1 incorporates two F-5 style filter dryers (mounted in parallel) with high pressure instrument regulators mounted in the outlet of each filter and connected into a common output line. One regulator should be set 20 psi higher than the other so that only the filter dryer on this regulator is in service. Should the charge become saturated and the regulator freeze off due to hydrates, then the output will drop to the setting of the the second regulator without interrupting service. A pressure gauge in the output line would make this condition immediately noticeable so that a new charge could be installed in the primary filter dryer without interrupting service.

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Latest News

New Products

We are delighted to announce that Haldatec have been appointed Australian distributors for the Purgasa range of equipment.

This will enable Australian industries to access the unique SmartWatchTM leak detection and monitoring systems for relief valves, shut off valves, steam traps and similar devices.

These bolt-on devices will detect gas and vapour leaks and discharges using ultrasonic detection and transmit data using 4 wire cable or RF signal.

This will provide users with constant monitoring and data input that will; reduce fugitive emissions, eliminate unnecessary maintenance, provide data for CO2 auditing, minimise product loss.

Already one major refinery has invested in this system with great success.

For more information see the data sheets in the 'Products'link on our website.

Taking the guesswork out of gas temperatures - Predicting gas temperatures for analysers

Industry now has available prediction techniques for calculating the temperature of pipeline gas that is being presented to on-line analysers. Thus the risk has been taken out of having a liquid laden sample or a non representative sample, that can damage analysers or not make the analysis meaningful.

Proprietary programmes have been developed specifically for use with Welker insertion regulators and Pressure Tech heated regulators.

New Product

Haldatec are pleased to announce the introduction of another new product to further enhance our considerable list of sampling choice options. The LXA is a hot-loop sample probe conditioning system, especially designed for moisture analysers on triethylene glycol dehydration units. This unit incorporates proven components that we have brought together to offer a unique package that offers unparalleled value.

For more information click here.