Anti-repeater
The anti-repeater COMBI-4
is a 5/2 ways pneumatic valve that commutates the outgoing signals when it receives at the same time two permanent pneumatic signals with maximum time interval of 0.4 sec. The outgoing signal stops whether one external signal is switched off. It is available with 1/4”G port; the body is in aluminium and brass and the spool is in aluminium chemical nickel plated. 
