heathrobinson
Part of things
Broken everything
Posts: 848 
Club RR Member Number: 111
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Aug 28, 2019 20:06:34 GMT
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Stoopid question time - What's the name for the little valve in an air compressor that's open to start with, then closes as it comes up to pressure? Like a little plunger in a little brass nozzle nuzzled in the cleavage of the two pistons.
My one's thoroughly forked, won't even close with the annointing of the oily unguents, not the percussive blessings of the wholly holy adjustable, and it turns out that it's very tricky ordering a replacement if you don't know what it is that you're replacing....
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Aug 28, 2019 20:10:22 GMT
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Pressure relief valve?
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heathrobinson
Part of things
Broken everything
Posts: 848
Club RR Member Number: 111
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Aug 28, 2019 20:17:45 GMT
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It's kind of the opposite of that - a pressure relief valve opens when a certain pressure is reached. This little beggar's open below a certain pressure (2.2 bar according to the only thing stamped on it), then closes when that pressure's reached. I assume this is for ease of starting or something.
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Dez
Club Retro Rides Member
And I won't sit down. And I won't shut up. And most of all I will not grow up.
Posts: 11,713
Club RR Member Number: 34
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Aug 28, 2019 20:32:38 GMT
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Unloader valve. As you say, to facilitate starting.
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heathrobinson
Part of things
Broken everything
Posts: 848
Club RR Member Number: 111
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Aug 29, 2019 20:04:18 GMT
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Brilliant, thanks. One step closer to a working compressor!
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