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electro hydraulic valve,
multi directional valve
Hydraulic Relief Combined Spool Directional Control Valve HCD6
The valve is through the relative movement between the spool and valve body to change the connection on the valve body oil path off the valves. Multi-directional control valve is a valve as the main body by two or more combined valve. Depending on the job requirements, the safety relief valve, check valve and fill valve combination subsidiary valve. And compared to other types of valves, multi-directional control valve has a compact structure, small pressure loss, the slide valve movement resistance, a number of functions, long life, simple to manufacture.
A lorry-mounted crane with multiple directional control valves and control methods, is the construction machinery with multi-way valve and control methods. First secondary pressure limiting valve and rotary valve load port A1 mouth and B1 port, the first main relief valve and the lorry-mounted crane with multiple valve ports P1 pump connection, the second main relief valve and the lorry-mounted crane to connect the multi-valve pump port P2; first load maintaining valve, the second load maintaining valve and the third load to maintain the directional control valve of the valve, respectively, and the rotary valve, expansion valve, the amplitude inlet connection, one-way valve and the winch double pump confluence valve inlet connection; rotary valve and the winch double pump confluence valve is connected in series, telescopic valve and amplitude valve winch double pump confluence valve connected in parallel and connected in series. Advantages: for the different characteristics of the lorry crane motion mechanism, winch associated depending on the operating conditions to achieve the conversion of fast and slow, both to improve the work efficiency, while taking into account the performance of the micro.
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