Device for control of pressure of pressure vessel of conveyor pipe

摘要

A spool-type control valve (30) is allocated to the pressure vessel and in one end position opens the flow-line (52) from the flow medium source (58) to the pressure vessel as well as shutting it off in the other end position. The flow-line opening and shutting is effected by a reciprocating piston (40) located in a bore (38) in the valve housing (36) and equipped with endfaces (43,43a).