Hello all

I have just bought an amal valve it has 2 pipes on it and a third one with no piping on it opressumably the one the bleed valve would go to its labled r.

I have tried blowing through r but it is blockd off so i have run poitive and negative to it and i still can not blow or suck through it.

I would have thought by putting power to the two conectors it would open up the circuit is it bust?

Any pics or tips on how these fuckers work muco apricated thanks Paul.