A control valve particularly for effecting control of a hydraulic circuit comprising: at least one first valve means including a first valve body; BALANCING VALVESa hydraulic fluid supply port, a hydraulic fluid exhaust port, and a hydraulic fluid delivery port provided in said first valve body; means for normally biasing said first valve means to a position for making fluid flow connection between said delivery port and said exhaust port, and for closing said supply port; and first manual control means for manually displacing said first valve means to a first extent in a first direction for causing closure of said connection between said delivery port and said exhaust port and to a further extent in said first direction for opening a fluid flow connection between said delivery port and said supply port; and second valve means including a second valve body;Bellow Seal Valve a second inlet port connectable to a source of hydraulic fluid, a second hydraulic fluid exhaust port, and a second hydraulic fluid delivery port provided in said second valve body, said second delivery port being connectable to said supply port of each said first valve body; means for normally biasing said second valve means to a position for making fluid flow connection between said second delivery port and said second exhaust port, and for closing said second inlet port;Forged Steel Valves and second manual control means for manually displacing said second valve means to a first extent in a second direction which is opposite to said first direction for causing closure of said connection between said second delivery port and said second exhaust port, and to a further extent in said second direction for opening a fluid flow connection between said inlet port and said delivery port, to make fluid available to said supply port of each said first valve body; whereby a hydraulic pressure is only transmitted from said control valve when there is activated not only at least one said first manual control means of said first valve body, but also said second manual control means of said second valve body; wherein said first and second manual control means are located sufficiently closely to one another to be gripped by one hand of an operator for simultaneous operation.

MORE NEWS

2012-01-16

Back