[ Haihong Hydraulics Cartridge Valves]
Haihong Hydraulcis was founded in 1992,specialize in Screw-in cartridge valve and manifolds in China. For more than 15 years manufacturing Hydraulic Cartridge Valve experience, Our quality is reliable, we will test all our cartridge valve before release, The main parts of the Screw-in Cartridge Valves are all quenched, which guarantees the hydraulic valves' long working life.
In year 2004, we have pass the ISO certificate, that make our production more standardization, and keep stable products quality.
The versatility of the cartridge valve range provides our engineers with the ability to mix and match different types of valves and sizes into one manifolds. Also our strong R&D ability can design the valve according to your requirment.
[ General introduce Screw-in Cartridge Valves]
Screw-in cartridge valve is one branch of hydraulic valves, it use screw thread as connecting way, that reduce many tube connections and make the valve more compact size, speedy acting, convenient fixing and unfixing, steady function. Due to these characters, Cartridge Valves have been widely used in construction machine, agriculture machine,hydraulic system and many other hydraulic industry fields.
Alsoa wide variety of cartridges allows engineers to find almost any hydraulic control function in cartridge form - with very few limitations.
With the development of this type valve cartridge,we believe it will be used in more and more industry place.
[Features of screw-in cartridge valave]
Like talked before,screw thread as connect way, that bring some advantages:
1.Light weight and compact size
-Combining several functions into a single manifold may save valuable space and weight, often occupying only 10% to 20% as much volume as conventional line-mounted systems plumbed with fittings, hose, and tubing.
2.Leakage prevention
-Because a valve package eliminates so many connections, system leakage potential is reduced drastically.
3.Efficiency for the system
-Valve packages that eliminate interconnecting lines and fittings lead to higher overall system efficiencies
4. Convenience and Serviceability
-Being more compact, valve packages sometimes can be mounted where they are less susceptible to external damage.
-Cartridges usually can be removed and replaced quickly without disturbing any external plumbing.
5. Aesthetics and Economy
-A clean design will not affect performance, but a good-looking machine on the dealer's sales floor in a competitive market can be an advantage to the OEM.
-On many systems, the cost of a custom valve package ,can be equal to (or less than) that of a system with individually plumbed components.
[ Type of Hydraulic Cartridge Valves]
Like all the Hydralic valves,Hydraulic Cartridge Valves also can be divided to three types(according to the functions):
1.Pressure Control Valve
* Cartridge Relief Valve
* Sequence Valve
* Pressure reducing Valve
* Counterbalance Valve
* load-control valves
2.Cartridge Directional Control Valve
(This type will control which device the fluid will flow to. These valves are the primary devices used to sequence the motion of equipment. There are many different types of directional control valves.)
* Cartridge Check Valves
* Pilot-operated check Valves
* Direction Valve (Magnetic, Manual)
* Cartridge Solenoid Valve (2,3,4 way, 2,3 position)
3.Cartridge Flow Control Valve
(In the case of flow control, a distinction is made between those affected by viscosity and those unaffected. it unaffected by viscosity are termed orifices. Throttles constitute resistances in a hydraulic system.)
* Throttle Valve
* Distribution Valve or diverter valve
* Flow regulating Valve
* Electro- Cartridge directional, flow, and pressure controls,
* Specialty valves - such as shuttle valves and velocity fuses,proportional valve,restriction valve
[Function of cartridge valve]
1.Load Holding; where the overcentre valve prevents the movement of a load when the directional valve is in the neutral position. Permitting the use of open centre directional valves and negating leakage past the spool of closed centre directional valves.
2.Load Control; where the overcentre valve prevents the actuator running ahead of the pump due to the load induced energy thereby eliminating cavitation in the actuator and loss of control.
3.Load Safety. In the case of hose failure an overcentre valve mounted onto or into an actuator will prevent uncontrolled movement of the load. When a boom is used as a crane then hose failure protection is vital as the loss of load control could cause damage to people or property.
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