Introducing the epitome of hydraulic innovation: the HLPSL and HLPSV load-sensitive proportional multi-way directional spool valves. These cutting-edge devices harmonize pressure, flow, and directional control into one seamless unit, ensuring unmatched performance and reliability. Crafted with three integral functional modules-connecting blocks, directional valves, and end plates-these valves are tailored for the hydraulic systems of top-tier engineering machinery. They precisely manage the movement direction and speed of hydraulic cylinders, motors, and other actuators, guaranteeing unparalleled precision and control. Outstanding features include a compact design, remarkable energy efficiency, and the ability for stepless speed control. Additionally, they empower multiple actuators to operate synergistically under varying loads, delivering exceptional performance and versatility across diverse applications.
The HLPSL valves are precision-engineered for constant displacement pump systems, ensuring stable and reliable operation. Conversely, the HLPSV valves are masterfully designed for variable pump systems. While HLPSV valves may display a marginally slower response time, they excel in delivering superior energy-saving performance, making them the ideal choice for efficiency-centric applications. With advanced engineering and an energy-efficient design, HLPSV valves stand out as the ultimate solution for sophisticated hydraulic control requirements.
| 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 of Connection Block
HLPSL: Constant Displacement Pump;
HLPSV: Variable Displacement Pump;
(2) Port P & R of the Connection Block:
2-G3/8;
3-G1/2;
4-G3/4;
5, 55-G1;
6-G1 1/4;
(3)Additional Component:
C,Standard Type;
G,Throttle Valve (Only Used for HLPSL);
H,Fixed Differential Overflow Valve for Improving 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, When Powered, the Pump is Pressurized; When Power Fails, the Pump Unloads; D: Normally Closed Magnetic Ball Valve, When Powered, the Pump Unloads; When Power Fails, the Pump is Pressurized; D../F. , With Pressure Limiting Valve, It Can Serve as Secondary Pressure (F50) with Pressure Value Indicated;
(6)Tool Adjustable, Pressure Limiting Valve in the Connection Block: Pressure Limiting Valve Sets Such as 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, ancillary block or intermediate transition block ZPL 5S(V)/H hydraulic control shut-off valve;
(9)Directional valve block inflow controller: 1, no inflow controller; 2, standard inflow controller; 4, 3-way inflow and outflow controllers (ideal for N 3/3-way valve); 5, enhanced 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: Max output flow of ports A & B (typically 3, 6, 10, 16, 25, 40, 63, 80, 120, 160, 210 L/min);
(12) Secondary pressure limitation: N, no pressure limiting protection; C, limit pressure of actuator ports A & B simultaneously; A---B---, limit pressure of actuator ports A & B separately (unit: bar);
(13) Function ON/OFF and pressure outlet: N, without function ON/OFF and pressure outlet; X, C-type pressure limitation; S/S1, AB-type pressure limitation; A, electric ON/OFF on side A; B, electric ON/OFF on side B;
(14) Operation manner: A(1,2), manual long handle (1=without handle, 2=short handle); E, electric proportional control; EA(1,2), electric proportional control + manual operation (1=without handle, 2=short handle); D, electric switching value control; DA(1,2), electric switching value control + manual operation (1=without handle, 2=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 (pilot oil ports perpendicular and outward to oil ports A and B);
(15) Ancillary block: /2, G3/8 port size; /3, G1/2 port size; /4, G3/4 port size; /5, G1 port size;
(16) End plate: E1, standard end plate, external pilot oil discharge, connects oil return control port T externally; E2, like E1, with additional port Y; E3, external pilot oil discharge, with 2-position 3-way magnetic ball valve; in power supply scenarios, system pressure rises to safety valve pressure;
E4, like E1, internal pilot oil discharge, port T can be sealed; E5, like E2, internal pilot oil discharge, port T can be sealed; E6, like E3, internal pilot oil discharge, port T can be sealed;
(17) Control voltage and anti-explosion cable length: G12-12VDC;G24-24VDC; G24Ex-3m-24VDC; G12Ex-3m-12VDC; G24MA-3m-24VDC; G122aebd9a5
Since our inception in 2009, Jiangsu KM Hydraulic Control System Co., Ltd. has emerged as a luminary in the hydraulic industry, pioneering innovation and excellence. As a proud member of the prestigious China Baoan Group (stock code: 000009) and recognized as a national high-tech enterprise, we excel in the research, development, manufacturing, and sales of elite hydraulic components. Our accolades include being named a national 'specialized, refined, and innovative' small giant enterprise, which underscores our dedication to technological advancement and unparalleled quality.
Our flagship product, the load-sensitive proportional valve, epitomizes the pinnacle of advanced hydraulic system control. Meticulously crafted for construction machinery and heavy-duty equipment, this indispensable component shines in crucial applications such as emergency rescue operations, tunnel engineering, mining, and municipal service vehicles. We pride ourselves on our partnerships with leading domestic manufacturers, crucially contributing to the localization of core hydraulic components for high-end mechanical equipment. Driven by our core philosophy of 'serving customers with technology, impressing customers with our attitude, and retaining customers with quality,' we are committed to delivering superior products, services, and solutions. Our mission is to rise as a globally trusted supplier of premier hydraulic components.
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