We pride ourselves on selling good quality kit and will be fair and prompt honouring our warranties. If you’re in trouble, we’ll help you out.

Air RegulatorValve

Pressure fluctuations, either downstream or upstream of the regulator, may indicate that the pressure regulator is not working correctly. The first troubleshooting step is ensuring the system uses the correct regulator. A pressure-reducing regulator controls downstream pressure, and a back-pressure regulator controls upstream pressure. If the incorrect regulator is in the system, replacement with the correct regulator is necessary. If the proper regulator is in place, there are other reasons why the pressure may rise beyond the set limit: creep, supply pressure effect, and an improperly sized regulator.

If your product is out of warranty and is buggered, even though you’ve hardly used it, give us a call or shoot us an email. If there is a manufacturer fault or the item should have lasted a lot longer than it has, we’re happy to assess it outside of the warranty period. We do this on a case-by-case basis.

Air pressure Regulatorwith water Separator

When selecting an air pressure regulator, ensure it meets the proper international standards. When a device meets international standards, it has the best chance of not prematurely breaking or failing dangerously. The following standards cover pneumatic pressure regulators:

A regulator that is too small for a system’s flow rate will cause droop. Droop is an increase in flow rate through the regulator that leads to a decrease in outlet pressure. The best solution to droop is to correctly size a regulator before choosing one. Most manufacturers will provide flow curves that help users determine the right regulator size for the system’s flow properties.

If the correct regulator is in place, there are other reasons why the pressure is rising beyond the set limit. One of the most common causes is creep. Creep occurs when the regulator fails to close completely, and high-pressure air can leak through the regulator. To test for creep in a regulator:

Minor faults caused by manufacturer - Parts will be supplied for repair, with instructions provided by us on how to carry out repair.

If air leakage through the regulator’s weep hole is frequent whenever there is air in the tank, the likely cause is a cracked diaphragm. The diaphragm controls how much air flows downstream. Improper lubricating oils or too many pressure change cycles can eventually break the diaphragm. While air leaks through the diaphragm and out the weep hole or regulator handle, the downstream pressure can not be adequately controlled. Small, inexpensive regulators are easier to replace than repair. However, replacing the diaphragm can be the best solution for large regulators.

Major faults caused by user - Where possible parts will be supplied at user expense. Where the item cannot be repaired by the user, Jono & Johno will offer to have the item returned for repair at user expense. Our workshop rate is $60 per hour.

Air pressure RegulatorValve

Major faults caused by manufacturer - Jono & Johno will facilitate a return of the product for refund or replacement at our expense.  Or if you’d prefer (at our discretion and in consultation with you), we can send appropriate parts and compensate labour costs if you can carry out the repair yourself.

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Air pressure regulatorhow it works

Air Pressure RegulatorValve with Gauge

If you’re in reasonable driving distance of a Jono and Johno outlet, you can physically return the product yourself. Please contact us in advance to arrange a return authority.

The supply pressure effect (SPE) is the inverse proportional relationship between the inlet and outlet pressure. For example, as an air tank empties, the pressure it delivers to the regulator drops. This drop leads to a rise in outlet pressure from the regulator. This phenomenon occurs in spring-supported regulators when the inlet pressure is high enough to keep the diaphragm open but not high enough to work fully against the spring supporting the diaphragm. As the diaphragm closes slightly, the outlet pressure increases. Most, if not all, manufacturers will give SPE values in their regulator’s manuals. When selecting a regulator, ensure that any outlet pressure rises will not damage downstream components.

If you are not within reasonable driving distance, Jono & Johno will provide you with a return authority and an address to return the product to. Where Jono & Johno is at fault, a postage-paid return label will be provided.

HighPressure Air RegulatorValve

Normal air leakage occurs through the regulator’s weep hole when a user reduces the set pressure for downstream pressure. When this happens, the pressure downstream of the regulator is higher than its set point, so that pressure needs to escape through the weep hole until the downstream pressure reaches the regulator’s set pressure.

Air compressor regulator leakage leads to the air compressor over cycling, which uses extra energy and causes more wear on the compressor. Therefore, identifying and fixing leakage as soon as possible is essential.

An air pressure regulator controls downstream and upstream pressure. This device is an important component in pneumatic systems, so air pressure regulator replacement is essential when it stops working. This article focuses on troubleshooting issues around air pressure regulators and how to replace them when necessary.

A pressure regulator can be clogged by even small particles that prevent the regulator from fully closing. This leads to creep.

Creep can lead to downstream components receiving air at higher pressures than their design allows. The following actions can help reduce the possibility of creep occurring: