Product Description
valves from 1P40 to 5P40 belong to the P40 series of integral directional control valves. The letter “P” represents the relevant specification series of this series of valves. The first digit of the number represents the number of valve connections (corresponding to the number of actuating elements controlled), and the last digit “40” indicates that the rated flow rate is 40L/min. The following is a detailed introduction to the principles, functions, roles and application scenarios of each model in this series of products:
1P40 (Single 40L/min integral Directional control valve)
Product principle: It adopts a single cast iron valve body structure, with internal components such as a valve core, check valve, and relief valve. Drive the valve core to slide through manual, pneumatic and other control methods to change the flow path of the hydraulic oil. The built-in check valve prevents the backflow of hydraulic oil, and the relief valve can adjust the working pressure of the system, thereby achieving flow and pressure control of individual hydraulic actuators.
Function: Rated flow rate 40L/min, maximum working pressure up to 250bar, supports open center circuit design, has basic hydraulic oil direction switching and system pressure regulation functions, and is compatible with the action control of single hydraulic actuator.
Function: Precisely control the start, stop, extension and retraction of individual hydraulic cylinders or hydraulic motors, while stabilizing system pressure to prevent damage to single hydraulic actuating elements due to abnormal pressure and ensuring the stable operation of individual hydraulic branches.
Application scenarios: It is mostly used for single hydraulic action control of small agricultural machinery, such as the lifting of plows in small tractors and the driving of tools in small orchard pruning machinery. It can also be used in small hydraulic experimental devices or small hydraulic tools.
2P40 (Double 40L/min Integral Directional Control Valve)
Product principle: It integrates two independent valve cores on the basis of a single valve, sharing one valve body and oil passage, and adopts a parallel circuit design. By separately controlling the displacements of the two valve cores, the flow direction and pressure of the two hydraulic oil circuits can be independently or synchronously regulated, and the two oil circuits do not interfere with each other. Meanwhile, an internal relief valve is built in to coordinate and regulate the system pressure of the entire valve group.
Function: Each channel has a rated flow rate of 40L/min. It supports independent control or linked control of two hydraulic actuating elements. A hydraulic lock can be optionally installed to enhance the stability of the oil circuit. The control mode can be flexibly selected from manual, pneumatic, etc.
Function: To achieve the coordinated operation of two associated hydraulic actuating elements, such as the coordinated operation of two different action mechanisms on the same equipment, reduce the space occupied by installing multiple single valves separately, and lower the risk of oil circuit leakage.
Application scenarios: It is suitable for the lifting and tilting action control of forklifts, the bucket lifting and small arm extension control of small loaders, and can also be used for the lifting and translation control of double-action small hydraulic platforms.
3P40 (Three-in-one 40L/min integral Directional Control valve)
Product principle: The valve body integrates three valve cores and adopts an integral casting process. The oil circuit is designed in a parallel form and supports power expansion function. By operating the three control levers to drive the corresponding valve cores respectively, the independent reversing of the three hydraulic oil lines is achieved, and they share the built-in relief valve and check valve to ensure stable pressure in the three oil lines and no backflow problem.
Function: The rated flow rate of each of the three channels is 40L/min. They can respectively control three hydraulic actuating elements and support various control methods such as manual and electro-hydraulic control. Some models can be equipped with hydraulic locks and are suitable for hydraulic systems of medium complexity.
Function: To meet the requirements of three related or independent hydraulic actions on the equipment, simplify the pipeline layout of the multi-channel hydraulic system, improve the response efficiency of multi-action coordination, and at the same time provide centralized pressure protection for the three branch circuits.
Application scenarios: It is commonly used for the suspension system of medium-sized tractors, the lifting of agricultural tools and the control of auxiliary device actions, as well as the coordinated control of three actions of small sanitation trucks: the rotation of the cleaning brush, the lifting of the dust suction port and the dumping of the sewage tank.
4P40 (Four-in-one 40L/min Integrated Directional Control Valve)
Product principle: Four valve cores are integrated into one unit, adopting an integral structure to reduce connection points. The oil circuit is designed in parallel and reserves a power expansion interface. By controlling the sliding of the four valve cores, the precise diversion and reversing of four hydraulic oil channels are achieved. The built-in relief valve can adjust the pressure according to the requirements of different actuating elements, adapting to the complex control logic of multiple hydraulic actions.
Function: Four oil circuits with a rated flow rate of 40L/min are independently controllable, supporting multiple control mode combinations. It has excellent anti-interference ability and can be adapted to hydraulic actuators of different loads. At the same time, it has strong overload pressure protection capability.
Function: It provides centralized control for multiple complex actions of the equipment, reduces the installation space of hydraulic valves and the cost of pipeline connections, and avoids leakage and control delay problems caused by the combination of multiple independent valves.
Application scenarios: It is suitable for the action control of the bucket, small arm, large arm and rotary platform of small excavators, as well as the interlocking control of various operation devices of multi-functional small engineering vehicles, such as the action control of milling, sweeping and watering of road maintenance vehicles.
5P40 (Five-link 40L/min integral Directional Control Valve)
Product principle: It adopts a five-valve core integral casting structure, with a more precise internal oil circuit design. It supports multi-channel parallel operation and can achieve partial oil circuit linkage control. Five independent control mechanisms drive the corresponding valve cores to achieve the control of the flow direction, flow rate and pressure of five hydraulic oil channels. The built-in relief valve and check valve ensure the pressure stability of the entire complex hydraulic system, preventing oil backflow and pressure overload.
Function: The rated flow rate of all five oil circuits is 40L/min, which can meet the independent or coordinated action control of five hydraulic actuating elements. It can be optionally equipped with electro-hydraulic proportional control to improve control accuracy. It supports the installation of auxiliary components such as hydraulic locks and one-way throttle valves.
1P40 (Single 40L/min integral Directional control valve)
Product principle: It adopts a single cast iron valve body structure, with internal components such as a valve core, check valve, and relief valve. Drive the valve core to slide through manual, pneumatic and other control methods to change the flow path of the hydraulic oil. The built-in check valve prevents the backflow of hydraulic oil, and the relief valve can adjust the working pressure of the system, thereby achieving flow and pressure control of individual hydraulic actuators.
Function: Rated flow rate 40L/min, maximum working pressure up to 250bar, supports open center circuit design, has basic hydraulic oil direction switching and system pressure regulation functions, and is compatible with the action control of single hydraulic actuator.
Function: Precisely control the start, stop, extension and retraction of individual hydraulic cylinders or hydraulic motors, while stabilizing system pressure to prevent damage to single hydraulic actuating elements due to abnormal pressure and ensuring the stable operation of individual hydraulic branches.
Application scenarios: It is mostly used for single hydraulic action control of small agricultural machinery, such as the lifting of plows in small tractors and the driving of tools in small orchard pruning machinery. It can also be used in small hydraulic experimental devices or small hydraulic tools.
2P40 (Double 40L/min Integral Directional Control Valve)
Product principle: It integrates two independent valve cores on the basis of a single valve, sharing one valve body and oil passage, and adopts a parallel circuit design. By separately controlling the displacements of the two valve cores, the flow direction and pressure of the two hydraulic oil circuits can be independently or synchronously regulated, and the two oil circuits do not interfere with each other. Meanwhile, an internal relief valve is built in to coordinate and regulate the system pressure of the entire valve group.
Function: Each channel has a rated flow rate of 40L/min. It supports independent control or linked control of two hydraulic actuating elements. A hydraulic lock can be optionally installed to enhance the stability of the oil circuit. The control mode can be flexibly selected from manual, pneumatic, etc.
Function: To achieve the coordinated operation of two associated hydraulic actuating elements, such as the coordinated operation of two different action mechanisms on the same equipment, reduce the space occupied by installing multiple single valves separately, and lower the risk of oil circuit leakage.
Application scenarios: It is suitable for the lifting and tilting action control of forklifts, the bucket lifting and small arm extension control of small loaders, and can also be used for the lifting and translation control of double-action small hydraulic platforms.
3P40 (Three-in-one 40L/min integral Directional Control valve)
Product principle: The valve body integrates three valve cores and adopts an integral casting process. The oil circuit is designed in a parallel form and supports power expansion function. By operating the three control levers to drive the corresponding valve cores respectively, the independent reversing of the three hydraulic oil lines is achieved, and they share the built-in relief valve and check valve to ensure stable pressure in the three oil lines and no backflow problem.
Function: The rated flow rate of each of the three channels is 40L/min. They can respectively control three hydraulic actuating elements and support various control methods such as manual and electro-hydraulic control. Some models can be equipped with hydraulic locks and are suitable for hydraulic systems of medium complexity.
Function: To meet the requirements of three related or independent hydraulic actions on the equipment, simplify the pipeline layout of the multi-channel hydraulic system, improve the response efficiency of multi-action coordination, and at the same time provide centralized pressure protection for the three branch circuits.
Application scenarios: It is commonly used for the suspension system of medium-sized tractors, the lifting of agricultural tools and the control of auxiliary device actions, as well as the coordinated control of three actions of small sanitation trucks: the rotation of the cleaning brush, the lifting of the dust suction port and the dumping of the sewage tank.
4P40 (Four-in-one 40L/min Integrated Directional Control Valve)
Product principle: Four valve cores are integrated into one unit, adopting an integral structure to reduce connection points. The oil circuit is designed in parallel and reserves a power expansion interface. By controlling the sliding of the four valve cores, the precise diversion and reversing of four hydraulic oil channels are achieved. The built-in relief valve can adjust the pressure according to the requirements of different actuating elements, adapting to the complex control logic of multiple hydraulic actions.
Function: Four oil circuits with a rated flow rate of 40L/min are independently controllable, supporting multiple control mode combinations. It has excellent anti-interference ability and can be adapted to hydraulic actuators of different loads. At the same time, it has strong overload pressure protection capability.
Function: It provides centralized control for multiple complex actions of the equipment, reduces the installation space of hydraulic valves and the cost of pipeline connections, and avoids leakage and control delay problems caused by the combination of multiple independent valves.
Application scenarios: It is suitable for the action control of the bucket, small arm, large arm and rotary platform of small excavators, as well as the interlocking control of various operation devices of multi-functional small engineering vehicles, such as the action control of milling, sweeping and watering of road maintenance vehicles.
5P40 (Five-link 40L/min integral Directional Control Valve)
Product principle: It adopts a five-valve core integral casting structure, with a more precise internal oil circuit design. It supports multi-channel parallel operation and can achieve partial oil circuit linkage control. Five independent control mechanisms drive the corresponding valve cores to achieve the control of the flow direction, flow rate and pressure of five hydraulic oil channels. The built-in relief valve and check valve ensure the pressure stability of the entire complex hydraulic system, preventing oil backflow and pressure overload.
Function: The rated flow rate of all five oil circuits is 40L/min, which can meet the independent or coordinated action control of five hydraulic actuating elements. It can be optionally equipped with electro-hydraulic proportional control to improve control accuracy. It supports the installation of auxiliary components such as hydraulic locks and one-way throttle valves.
Precautions for Use
1. Medium and Selection management Strictly select L-HM 32/46 anti-wear hydraulic oil. It is strictly
prohibited to mix different grades or inferior oils. Before installing the new valve, the inner cavity of the valve body and the
pipeline should be flushed with clean oil to remove the iron filings and impurities remaining during the installation process. –
Select the type based on the system pressure (≤20 MPa), flow rate (≤80 L/min), and the number of actuators. A single valve is only
suitable for a single actuator. It is strictly prohibited to control multiple loads in series to avoid insufficient flow.
Regularly check the cleanliness of the oil and take samples for testing every three months. 2. Installation and commissioning When
installing, be sure to confirm the oil port markings (P inlet, T return, A/B operation). It is strictly forbidden to connect them
in reverse (reverse connection will cause the actuator to act in the opposite direction and even damage the sealing parts). Apply
oil-resistant sealant to the flange connection and control the tightening torque at 35-40 N·m to prevent high-pressure leakage.
Before debugging, manually turn the lever 3 to 5 times to ensure that the valve core moves smoothly without any jamming.
Low-pressure oil (5 MPa) is introduced to test the on-off status of the oil ports at each workstation. A leakage of ≤1 mL/min at
the median is considered normal. Adjust the leverage amplitude and confirm the linear change of the actuator speed. When installed
outdoors or in a damp environment, the lever operation part should be coated with grease for rust prevention, and the surface of
the valve body can be painted with anti-rust paint. The installation position should be convenient for manual operation by the
operator. There should be no obstacles within the movement range of the lever to avoid operational obstruction.
prohibited to mix different grades or inferior oils. Before installing the new valve, the inner cavity of the valve body and the
pipeline should be flushed with clean oil to remove the iron filings and impurities remaining during the installation process. –
Select the type based on the system pressure (≤20 MPa), flow rate (≤80 L/min), and the number of actuators. A single valve is only
suitable for a single actuator. It is strictly prohibited to control multiple loads in series to avoid insufficient flow.
Regularly check the cleanliness of the oil and take samples for testing every three months. 2. Installation and commissioning When
installing, be sure to confirm the oil port markings (P inlet, T return, A/B operation). It is strictly forbidden to connect them
in reverse (reverse connection will cause the actuator to act in the opposite direction and even damage the sealing parts). Apply
oil-resistant sealant to the flange connection and control the tightening torque at 35-40 N·m to prevent high-pressure leakage.
Before debugging, manually turn the lever 3 to 5 times to ensure that the valve core moves smoothly without any jamming.
Low-pressure oil (5 MPa) is introduced to test the on-off status of the oil ports at each workstation. A leakage of ≤1 mL/min at
the median is considered normal. Adjust the leverage amplitude and confirm the linear change of the actuator speed. When installed
outdoors or in a damp environment, the lever operation part should be coated with grease for rust prevention, and the surface of
the valve body can be painted with anti-rust paint. The installation position should be convenient for manual operation by the
operator. There should be no obstacles within the movement range of the lever to avoid operational obstruction.
Storage protection
When stored for a long time, seal all oil ports with special plugs, inject a small amount of anti-rust oil
into the valve body, and apply lithium-based grease to the moving parts of the lever. Store in a dry warehouse at 0-45℃ with a
humidity of no more than 60%, avoiding direct sunlight, heavy object compression and corrosive gas erosion. Before putting it into
use after being idle for more than 12 months, thoroughly clean the inner cavity of the valve body and replace the sealing parts.
Manually turn the lever to confirm there is no jamming. Then, introduce low-pressure oil to test the on-off and leakage conditions
of each workstation. Only after meeting the standards can it be connected to the system for use.
into the valve body, and apply lithium-based grease to the moving parts of the lever. Store in a dry warehouse at 0-45℃ with a
humidity of no more than 60%, avoiding direct sunlight, heavy object compression and corrosive gas erosion. Before putting it into
use after being idle for more than 12 months, thoroughly clean the inner cavity of the valve body and replace the sealing parts.
Manually turn the lever to confirm there is no jamming. Then, introduce low-pressure oil to test the on-off and leakage conditions
of each workstation. Only after meeting the standards can it be connected to the system for use.
Company Profile
Frequently Asked Questions
1.What ls our Main Products?
1.Hydraulic pump
2.Hydraulic valve
3.Hydraulic motor
4.Hydraulic cylinder
5.Hydraulic parts
2. What about the MOQ?
3.What are your advantages?
- Adhere to quality first.
- Support customization, ODM & OEM service.
- 1-year warranty and complete after-sales support.
- Safe and fast shipping worldwide.
- 24-hour online service for your inquiries.
4.Are you a manufacturer? What’s your delivery time?
Yes, we are a manufacturer with our own factory.
Common models are in stock, and orders are usually shipped within 1–3 days.
5.Which payment methods are accepted?
We accept T/T, L/C, PayPal, VISA, Western Union, Apple Pay, Google Pay, Afterpay (Clearpay), Klarna, and Trade Assurance.
For full orders: 30% deposit, balance before shipment.
For small/sample orders: full payment in advance.
6.How will you deliver my goods?
We offer flexible shipping options: DHL, UPS, FedEx, TNT, EMS, as well as air or sea freight.
All deliveries ensure door-to-door fast and safe service.
7.How do you inspect and guarantee your products?
All products are tested before shipment to ensure perfect working condition.
We offer a 12-month warranty — if a product fails due to quality issues, we provide free spare parts or repair support.
8.What about after-sales service?
If you encounter any problem during use, please contact your sales manager or our support team at any time.
We will respond quickly and help solve the issue efficiently.
9.What are your main applications?
- Hydraulic systems
- Agricultural machinery
- Construction machinery
- Automobile industry
- Local distributors and maintenance centers
10.Can I get a discount for bulk orders?
Yes. We offer competitive wholesale prices and try our best to give benefits to long-term partners.
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