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post #42 of (permalink) Old 10-23-2011, 09:33 PM
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Join Date: Feb 2009
Location: San Francisco
Posts: 2,530
filter is necessary in most cases, or debris can get in the reg and clog the poppet valve.
for some regulators the inlet screen filter might not be good enough, I am currently dealing with two of these kind of regulators right now, they are the low flow vacuum regs, the orifice at the poppet valve is really small, really easy to get clog, I have to add the inline vacuum filters.
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