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Offlinejmesar
La Ceja
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Registered: 04/24/10
Posts: 22
Loc: Colombia - La Ceja
Last seen: 10 years, 3 months
Tampering PC relief valve
    #13665959 - 12/21/10 01:42 PM (13 years, 1 month ago)

As I said before I am pondering to build a substrate sterilization system based on 55 G Drums, as Mr RR. My first concern is safety.
As far I found a maximum pressure allowable for a drum is 5 PSI, I asked in the local market for a relief valve graded for 5 PSI and everyone looks at me as if I were crazy.
I asked a mechanical engineer and he suggest to buy a higher and change the spin or cut it, but as a second idea speak of tampering the PC (pressure cooker) relief valve.


The counterweight of the PC weight 52.5gr “ended” in a cone that rest in a hole of 1/8 (0.125) what mean a relief pressure of 9.4 PSI.

If I scratch the counterweight of the PC from 52.5 to 39.5gr and drill from 1/8 to 5/32 the relief pressure would be 4.5 PSI.
My question is if have anyone do something like that, and if it is safe?


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OfflineRogerRabbitM
Bans for Pleasure
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Registered: 03/26/03
Posts: 42,214
Loc: Seattle
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Re: Tampering PC relief valve [Re: jmesar]
    #13666613 - 12/21/10 04:05 PM (13 years, 1 month ago)

I wouldn't tamper with a PC relief valve.

5 psi steam relief valves.  The 13 series is what you're interested in.  When you order, don't tell them you're building your own boiler or they might not sell it to you.(lawyer's orders)
RR


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