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Proportional valve belongs to a kind of direction control valves

Proportional valve belongs to a kind of direction control valves

The proportional valve is a hydraulic valve in the hydraulic directional control valve that can realize stepless speed control.
Proportional valve is a valve that remotely controls the pressure, flow or direction of the oil continuously and proportionally according to the input electrical signal.
Proportional valve can precisely control the pressure, flow or direction in the hydraulic system according to the input electrical signal.
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Product Description

Introduction to Youli PV - 4 Series Proportional Valves

The Youli PV - 4 series proportional valves are a versatile and reliable hydraulic control valve designed for mobile and industrial applications. These valves offer precise control of hydraulic functions, making them an essential component in many hydraulic systems.

Features of PV - 4 Series Proportional Valves

High Flow Capacity : The PV - 4 series proportional valve has a maximum inlet flow of 140 lpm and a maximum spool flow of 115 lpm. This high flow capacity allows it to control large hydraulic actuators and systems.

High Pressure Rating : The valve has a maximum pressure rating of 315 bar, making it suitable for high - pressure hydraulic systems.

Multiple Control Options : The PV - 4 series proportional valve offers a variety of control options, including manual, friction detent, electrical, hydraulic, and electrical proportional control. This allows for flexible and precise control of hydraulic functions.

Electrical Unload and Load Sense : The valve features electrical unload and load - sense functions, which help to improve the efficiency and performance of the hydraulic system.

Pressure Compensation : The PV - 4 series proportional valve has pressure compensation on individual spools, ensuring consistent flow rates even under varying pressure conditions.

Applications of PV - 4 Series Proportional Valves

Mobile Machinery : The PV - 4 series proportional valve is commonly used in mobile machinery such as excavators, loaders, and backhoes. It provides precise control of hydraulic functions, such as the movement of the boom, arm, and bucket, allowing for efficient and accurate operation.

Industrial Equipment : In industrial settings, the PV - 4 series proportional valve is used to control hydraulic functions in various equipment such as presses, injection molding machines, and machine tools. It helps to improve the precision and productivity of these machines.

Remote Control Systems : The valve is an integral part of remote control systems for hydraulic valves. It allows operators to control the valves from a distance, providing greater flexibility and safety in operation.

Directional Control Valves in PV - 4 Series

The PV - 4 series also includes directional control valves, which are used to control the direction of hydraulic fluid flow in the system. These valves are available in various configurations, such as 3 - way and 4 - way valves, and can be operated manually, electrically, or hydraulically. The directional control valves in the PV - 4 series are designed for high - cycle rates, long life, and high efficiency.


Proportional valves are mainly used in cranes, Marine hydraulic systems, hydraulic drilling RIGS, concrete boom trucks and so on.

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We can provide all types of hydraulic proportional valves, we have our own processing plant, can deliver goods quickly and quality assurance.

We can provide the brand with Walvoil, Hydraulic, Parker, Rexroth, Hawe, Youli, Danfoss and Chinese brand alternatives.

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