Ningbo Haihong Hydraulics Co., Ltd. is one of China leading hydraulic cartridge valve manufacturers. We provide high quality hydraulic cartridge valves since 1992. Contact us today for all your hydraulic cartridge valves OEM/ODM requirements.

[ 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, hydraulic system and many other hydraulic industry fields.
Hydraulic cartridge valve can be directly screwed into cavity of manifold block or single body (metal block), therefore failure caused by leakage, shaking, noise or tubing can be much reduced and dependability can be significantly improved.
A wide variety of cartridges allows engineers to find almost any hydraulic control function in cartridge form - with very few limitations.
[Cartridge Relief Valves]
A Relief valve is a type of valve used on a liquid service, which relieves pressure proportionally (slowly) as the increasing pressure overcomes the spring pressure. The pressure is relieved by allowing the pressurized fluid to flow from an auxiliary passage out of the system. The relief valve is designed or set to open at a predetermined pressure to protect pressure vessels and other equipment from being subjected to pressures that exceed their design limits. When the pressure setting is exceeded, the relief valve becomes the "path of least resistance" as the valve is forced open and a portion of the fluid is diverted through the auxiliary route. The diverted fluid is usually routed through a piping system known as a flare header or relief header to a central. As the fluid is diverted, the pressure inside the vessel will drop. Once it reaches the valve's re-seating pressure, the valve will re-close. This pressure, also called blow down, is usually within several percent of the set-pressure.
In some cases, a so-called bypass valve acts as a relief valve by being used to return all or part of the fluid discharged by a pump back to either a storage reservoir or the inlet of the pump. This is done to protect the pump and any associated equipment from excessive pressure.
[Type Of Relief Valve]
We have some type relief valves,inculding Directly operated Relief Valves,Pilot Operated Relief Valves,Differently Operated Relief Valves,Bi-directional Relief Valves,Remote Control Relief Valves,Combined Relief Valve.
Item: ZYF15-01-00
Bi-directional Counterbalance Valve : Suited for bi-directional motion.

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Please also see our hot products:
Cartridge Valve
Hydraulic Solenoid Valve
Cartridge Relief Valve
Cartridge Pressure Valve
Hydraulic Cartridge valve
For more hydraulic valve information,You can visit our website: www.nbhhyy.com
please feel free to contact with us!

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