ALFA-LAVAL COMPANY LTD
... , an. The Alfa-Laval 4-Way DUPLEX CONTROL VALVE is an ingenious device which contributes much to the simplicity and efficiency of our Combine Recorder. The valve is, in reality, two independent valves in one, one controlling the passage of milk, the other controlling the air and vacuum. It is designed with a protecting lip, which elim inates damage when washing, thereby having a great ...