Introducing the groundbreaking HLPSL and HLPSV load-sensitive proportional multi-way directional spool valves! These engineering masterpieces seamlessly blend pressure, flow, and direction control into one unified system, delivering peak performance and unwavering reliability. Comprising three indispensable functional modules - connecting blocks, directional valves, and end plates - these valves are meticulously crafted for hydraulic systems within elite engineering machinery. They expertly regulate the movement direction and velocity of hydraulic cylinders, motors, and other actuators, ensuring unparalleled precision and control. Key features include a compact structure, outstanding energy efficiency, and the capability for stepless speed control. Moreover, they allow multiple actuators to operate synchronously under varying loads, providing unmatched performance and versatility across any application.
The HLPSL valves are meticulously designed for constant displacement pump systems, ensuring unwavering and dependable operation. Conversely, the HLPSV valves are masterfully engineered for variable pump systems. While HLPSV valves may exhibit a marginally slower response time, they excel in delivering extraordinary energy-saving performance, making them the ultimate choice for applications where efficiency is paramount. With their cutting-edge engineering and energy-efficient design, HLPSV valves emerge as the premier solution for sophisticated hydraulic control needs.
| References |
size 2 |
size 3 |
size 5 |
| Number of Directional Valve bank |
1~12 |
1~12 |
1~10 |
| Port access type |
thread connection |
thread connection |
thread connection |
| Flow code |
3,6,10,16,25,40 |
3,6,10,16,25,40,63,80 |
16,25,40,63,80,120,160 |
| Max.flow(L/min) |
54 |
100 |
210 |
| Max.pressure(bar) |
420 |
420 |
420 |
| Control Method |
Pilot circuit pressure(bar) |
20~40 |
20~40 |
20~40 |
| Manual force(N) |
≥2.3Nm |
≥1.3Nm |
≥3Nm |
| Working Pressure(ºC) |
-40~80 |
-40~80 |
-40~80 |
| Weight |
Connection Block (kg) |
1.7 |
4 |
8 |
| Directional Valve bank (kg) |
1.9 |
4 |
8 |
| End Plate (kg) |
0.5 |
1.5 |
2.5 |
| Fix mode |
thread connection M8 |
thread connection M8 |
thread connection M10 |
Installation Instructions
(1)Basic Code for Connection Block
HLPSL: Constant Displacement Pump;
HLPSV: Variable Displacement Pump;
(2)Port P & R Specifications for Connection Block:
2-G3/8;
3-G1/2;;
4-G3/4;;
5, 55-G1;;
6-G1 1/4;;
(3)Additional Components:
C,Standard Type;
G,Throttle Valve (Only for HLPSL);
H,Fixed Differential Overflow Valve for Enhancing Circulating Pressure (Approx. 14 bar, HLPSL);
(4)Pilot Oil Circuit Pressure:0 without Pressure Reducing Valve; 1 with Pressure Reducing Valve (20 bar); 2 with Pressure Reducing Valve (40 bar);
(5)2/2-Way Magnetic Ball Valve for System Unloading: C, without Magnetic Ball Valve; F, Normally Open Magnetic Ball Valve (Pressure when Powered, Unload when Unpowered); D: Normally Closed Magnetic Ball Valve (Unload when Powered, Pressure when Unpowered);../F., with Pressure Limiting Valve, it can serve as Secondary Pressure (F50) with Specified Pressure Value;
(6)Tool-Adjustable Pressure Limiting Valve in the Connection Block: Pressure Limiting Valve Sets (63, 120, 210, 280, 315, 350, 400 bar); /NF: Without Pressure Limiting Valve (Only for HLPSV);
(7)Product Series: -2 Series;-3 3 Series; -5 5 Series;
(8)Thread size of directional spool valve ports A & B: 2-G3/8; 3-G1/2; 4-G3/4; 5-G1; A, with ancillary block or intermediate transition block ZPL 5S(V)/H hydraulic control shut-off valve;
(9)Directional valve block inflow controller options: 1, without inflow controller; 2, standard inflow controller; 4, 3-way flow controllers for inlet and outlet (ideal for N 3/3-way valve); 5, strengthened inflow controller; 8, pre-selectable;
(10) Function symbol of valve core: L, M, F, H, J, B, R, O, N;
(11) Output flow code of ports A & B: Maximum output flow of ports A & B available in values like 3, 6, 10, 16, 25, 40, 63, 80, 120, 160, 210 (L/min);
(12) Secondary pressure limitation: N, no pressure limiting protection; C, limit the pressure of actuator ports A & B simultaneously; A---B---, limit the pressure of actuator ports A & B separately, unit (bar);
(13) Function ON/OFF and pressure outlet options: N, without function ON/OFF and pressure outlet; X C type pressure limitation; S/S1 AB type pressure limitation; A, electrical ON/OFF on side A; B, electrical ON/OFF on side B;
(14) Operation manner: A(1,2), manual operation with long handle (1=without handle, 2=with short handle); E, electric proportional control; EA(1,2), electric proportional control and manual operation (1=without handle, 2=with short handle); D, electric switching value control; DA(1,2), electric switching value control and manual operation (1=without handle, 2=with short handle); M, manual friction positioning with long handle; H, pure hydraulic control (two pilot oil ports align with oil ports A and B); F, pure hydraulic control (two pilot oil ports are perpendicular to oil ports A and B and outward respectively);
(15) Ancillary block options: /2 Ancillary block port size G3/8; /3 Ancillary block port size G1/2; /4 Ancillary block port size G3/4; /5 Ancillary block port size G1;
(16) End plate options: E1, standard end plate, external discharge of pilot oil, connecting oil return control port T externally; E2, similar to E1, external discharge of pilot oil, port Y is additionally attached; E3, external discharge of pilot oil, a 2-position 3-way magnetic ball valve is mounted; in power supply scenarios, the system pressure rises to the safety valve pressure;
E4, similar to E1, internal discharge of pilot oil, port T can be sealed; E5, similar to E2, internal discharge of pilot oil, port T can be sealed; E6, similar to E3, internal discharge of pilot oil, port T can be sealed;
(17) Control voltage and the length of anti-explosion type cable: G12-12VDC;G24-24VDC; G24Ex-3m-24VDC; G12Ex-3m-12VDC; G24MA-3m-24VDC; G12MA-3m-12VDC (anti-explosion type, available in lengths of: 3m, 5m, 10m, etc.)
Since our inception in 2009, Jiangsu KM Hydraulic Control System Co., Ltd. has been a beacon of innovation and excellence within the hydraulic industry. As an esteemed member of the China Baoan Group (stock code: 000009), and honored as a national high-tech enterprise, we excel in the research, development, manufacturing, and sales of superior hydraulic components. Our recognition extends to being designated as a national 'specialized, refined, and innovative' small giant enterprise, underlining our commitment to technological advancement and quality.
Our flagship product, the load-sensitive proportional valve, epitomizes advanced hydraulic system control, specifically engineered for construction machinery and heavy-duty equipment. This adaptable component is indispensable in emergency rescue operations, tunnel engineering, mining applications, and municipal service vehicles. We proudly collaborate with numerous prominent domestic manufacturers, significantly contributing to the localization of core hydraulic components for high-end mechanical equipment. Guided by our core philosophy of 'serving customers with technology, impressing customers with our attitude, and retaining customers with quality,' we are unwavering in our dedication to delivering exceptional products, services, and solutions. Our mission is to become a globally trusted supplier of premier hydraulic components.
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