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Dearfield Co. | essentially the same valve as what pete uses on low air.This valve you have appears to be a updated one from when the truck was new.This is why I dump the air on my tractors when doing a fast dump. the valve is basically designed with a range so it can be mounted in 1 of 4 clockings once it leaves that range it will do weird things.You might be able to find a reproduction seal-tech that it replaced thru freight liner or another manufacturer.That is unless it has your dump function in it as well then you are limited in choice unless you want to wire up dumps | |
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