The DSA* are pneumatically operated (1) directional control valves, available with 3 or 4 ways with several interchangeable spools (2) and with mounting interface according to ISO 4401 (CETOP RP121H) standards.
The valve body (3) is made with high strength iron castings provided with wide internal passages in order to minimize the flow pressure drop.
It is available with 2 or 3 positions with return spring, or with 2 positions with mechanical retention.
The Y external drain is available (standard) for the ISO 4401-05 (CETOP R05) size and it must be connected when there is backpressure higher than 25 bar on the T port.
Tech Specs: See PDF file