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Technical Info

How to gear up for servicing regulators? Choosing the tools or kit(s) that are right for you.

Posted by Pia Limpiyasrisakul on

We often get asked the question “What are all the tools to I need to service model X from brand Y?”. The word “all” in the above mentioned question is a bit daunting as this makes us wonder where to start: Does the technician still need basic hand tools such as hex keys, spanners? Does the technician still needs set-up equipment and instrumentation as pressure gauge(s) and in-line adjustment tools? Does the technician still need basic scuba service tools like O-ring picks, vise handle….? Does the technician still need cleaning equipment like an ultrasonic cleaner? Does the technician already have...

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The use of torque adapters

Posted by Pia Limpiyasrisakul on

Torque wrenches are used to apply a correct torque (force) to a ‘critical part’. Often we’d like to apply the correct torque in order to: Avoiding over-tightening the parts(s). Over-tightening could lead to damage of the parts: small delicate parts could break, threads could be stripped, bodies could crack… Avoid under-tightening the part(s). Under-tightening could lead to: parts being able to be loosened by hand, parts vibrating loose… When using torque wrenches with adapters (e.g. the use of a crowfoot wrench), one has to be careful as to apply the correct torque in order avoid over torqueing parts. There are...

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Adjusting downstream second stages

Posted by Pia Limpiyasrisakul on

NOTES: The text below uses some simplified schematics to illustrate the effect of different adjustment options for downstream second stages or demand valves. As to isolate the effect of the different adjustment options, one adjustment option at the time is being shown whilst the other adjustment option remains fixed. In reality both adjustment options go together hand in hand and changing one might require an adjustment of the other option as well. The illustrations are for balanced second stages; however the principle remains the same for unbalanced second stages. A WORD OF CAUTION: Always follow the manufacturer’s recommendations with regards...

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Measuring cracking effort

Posted by Pia Limpiyasrisakul on

WHAT IS CRACKING OR INHALATION EFFORT - DEFINITION: Cracking or inhalation effort can be defined as the minimum amount of inhalation effort or vacuum required to start the airflow through the second stage regulator.  In other words it is the amount of inhalation/effort/vacuum required to just open the valve of the second stage or, to just separate the soft seat (poppet) from the hard seat (orifice) of the second stage regulator and start air flowing through the second stage. HOW TO MEASURE CRACKING EFFORT: - After calibration of the differential pressure gauge, install the mouthpiece assembly onto the second stage by...

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