Hydrostatic Testing in La Puente

Is your extinguisher due for a hydro test?

Check the cylinder first. A hydrostatic test proves the shell can still hold its working pressure. Each type of extinguisher has its own interval, and the clock runs from the last test date on the unit (or from its manufacture date if it has never been tested).

• Dry chemical: every 12 years.
• CO2: every 5 years.
• Water: every 5 years.
• Wet chemical (Class K): every 5 years.

Stored-pressure dry chemical units also get an internal teardown every 6 years. That's a separate job. The annual maintenance tag records yet another visit, so a fresh tag doesn't mean the cylinder is in date for its hydro test.

How the test works

The technician empties the unit, removes the valve and looks inside the cylinder for corrosion, dents or thread damage. Then the shell is filled with water and brought up to its test pressure. Pass or fail is clear. A cylinder that leaks, swells or shows damage is condemned and can't go back on the wall. One that passes is dried out, recharged, reassembled and marked with the new test date so the next inspector can see when it was done. Then it goes back in service.

Bring us your deadline

Most of the calls we get from La Puente are about fire extinguishers. Some callers have a fire marshal follow-up already on the calendar. Tell us that date. If several units were bought the same year, count them before you call, because cylinders put in service together usually come due for testing together.

For one local example, read how we handled bilingual, fast-turnaround extinguisher service for a La Puente restaurant facing an inspection.

The code La Puente follows

La Puente's municipal code adopts the 2022 California Fire Code through Title 32 of the Los Angeles County Code, and the city's own fire chapter adds no local amendments for extinguishers. Extinguishers fall under CFC Section 906. The intervals above come from NFPA 10. Editions change. Confirm the current one with the local fire marshal.

Who does the work

Who may do this work? In California, extinguisher service has to be done by a firm and technician licensed by the State Fire Marshal under Title 19. Our California work is done by Hedrick Fire Protection, which holds C-16 and C-10 contractor licenses and is State Fire Marshal licensed under Title 19 for extinguisher and water-based system service.

Testing is one piece of extinguisher care. See annual extinguisher certification, extinguisher refills, fire extinguisher service and extinguisher training in La Puente, or go back to the La Puente fire protection hub. Outside the city, we also do hydrostatic testing in Los Angeles County, San Bernardino County and Orange County.

La Puente hydro testing questions

Do you service the La Puente area?

Yes. La Puente is in our service area, including ZIP codes 91744, 91746, 91747 and 91749.

How soon can a technician come out?

That depends on the week's schedule. Call and ask for the earliest open date, and if a fire marshal follow-up is already set, give us that date so we can plan around it.

How do I find the last test date?

Look on the cylinder. Tested units carry a mark or label showing when the last hydro test was done; if you can't find one, ask the technician to check it on the next visit.

Do Class K kitchen extinguishers need testing?

Yes, every 5 years. Wet chemical units are on the same 5-year cycle as CO2 and water extinguishers.

To book hydrostatic testing in La Puente, call (213) 568-0188 or email socal@1profire.com