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First of all, I would like to know about the service life of a flashback arrestor. In my laboratory, I got three flashback arrestors {WITTgas RF53N(1/4”NPT-F), Brass} from the ex-students who used those items in 2012 and already finished their graduation. I joined the laboratory in 2015. In this circumstance, I want to know if there is any possible way to check those flashback arrestor. All the flashback arrestors they used are for the premixed combustion in a Constant Volume Combustion Chamber. My purpose is also same. But I want to know first whether those flashback arrestors are dead or alive.

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  • $\begingroup$ Can you find any tech sheets from the manufacturer? Typically those will list a warranteed or recommended lifetime. $\endgroup$ – Carl Witthoft Jan 18 '16 at 13:10
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The manufacturer says this about maintanence:

  • annual testing of the non-return valve, body leak tightness and flow capacity is recommended

  • WITT is happy to supply special test equipment

  • Flashback Arrestors are only to be serviced by the manufacturer; the dirt filter may be replaced by competent staff

Given that you inherit this equipment and don't know how it was treated I would do the recommended testing, or have it done. I would likewise replace the dirt filter.
Contact Witt (or their sales rep/service partner) about these steps to get an idea if you can do this yourself, have it done by a technician in house or need external help.

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  • $\begingroup$ Thanks for the comment. After calling to WITT, they prescribe me to do the annual checkup $\endgroup$ – Shubhra Kanti Das Apr 18 '16 at 3:13

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