Introducing the state-of-the-art HLPSL and HLPSV load-sensitive proportional multi-way directional spool valves. These engineering marvels seamlessly integrate pressure, flow, and direction control into a single, cohesive unit. Typically comprising three essential functional modules: connecting blocks, directional valves, and end plates, these valves are meticulously designed for hydraulic systems within engineering machinery. They expertly orchestrate the movement direction and speed of hydraulic cylinders, motors, and other actuators. Notable features include an exceptionally compact structure, remarkable energy efficiency, and the capacity for stepless speed control. Moreover, they empower multiple actuators to operate in harmony under varying loads, ensuring unmatched performance and versatility.
The HLPSL valves are meticulously tailored for constant displacement pump systems, while the HLPSV valves are masterfully engineered for variable pump systems. Although the HLPSV valves may exhibit a slightly slower response time, they excel in delivering superior energy-saving performance, making them the optimal choice for applications where efficiency is paramount.
| 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 the circulating pressure (about 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, in case of power supply, the pump is pressurized; in case of power failure, the pump carries out unloading; D: normally closed magnetic ball valve, in case of power supply, the pump carries out unloading; in case of power failure, 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 options: 1, without inflow controller; 2, standard inflow controller; 4, 3-way flow controllers for both inlet and outlet (ideal for N 3/3-way valve); 5, strengthened inflow controller; 8, pre-selectable;
(10) Valve core function symbols: L, M, F, H, J, B, R, O, N;
(11) Output flow code for ports A & B: Maximum output flow for ports A & B typically includes 3, 6, 10, 16, 25, 40, 63, 80, 120, 160, 210 (L/min);
(12) Secondary pressure limitation options: N, no pressure limiting protection; C, pressure limitation for actuator ports A & B simultaneously; A---B---, pressure limitation for actuator ports A & B separately, unit (bar);
(13) Function ON/OFF and pressure outlet configuration: 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 methods: 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 with manual operation (1=without handle, 2=with short handle); D, electric switching control; DA(1,2), electric switching control with 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 port sizes: /2 Ancillary block port G3/8; /3 Ancillary block port G1/2; /4 Ancillary block port G3/4; /5 Ancillary block port G1;
(16) End plate options: E1, standard end plate with external pilot oil discharge, connecting oil return control port T externally; E2, similar to E1 with an additional port Y; E3, external discharge with a 2-position 3-way magnetic ball valve; in power supply scenarios, system pressure rises to safety valve pressure;
E4, similar to E1 but with internal pilot oil discharge, port T can be sealed; E5, similar to E2 but with internal discharge, port T can be sealed; E6, similar to E3 but with internal discharge, port T can be sealed;
(17) Control voltage and anti-explosion type cable lengths: G12-12VDC;G24-24VDC; G24Ex-3m-24VDC; G12Ex-3m-12VDC; G24MA-3m-24VDC; G12MA-3m-12VDC (anti-explosion type, guide line lengths: 3m, 5m, 10m, etc.)
Since our inception in 2009, Jiangsu KM Hydraulic Control System Co., Ltd. has emerged as a lighthouse of innovation and excellence in the hydraulic industry. As a proud member of the prestigious China Baoan Group (stock code: 000009), and celebrated as a national high-tech enterprise, we are at the forefront of research, development, manufacturing, and sales of top-tier hydraulic components. Our accolades include being named a national 'specialized, refined, and innovative' small giant enterprise, highlighting our relentless commitment to technological advancement and unparalleled quality.
Our flagship innovation, the load-sensitive proportional valve, represents the pinnacle of advanced hydraulic system control. Engineered with precision for construction machinery and heavy-duty equipment, this versatile component is vital in emergency rescue operations, tunnel engineering, mining applications, and municipal service vehicles. We are honored to partner with a multitude of leading domestic manufacturers, playing a crucial role in the localization of core hydraulic components for elite mechanical equipment. Anchored in our core philosophy of 'serving customers with technology, impressing customers with our attitude, and retaining customers with quality,' we are steadfast in our mission to deliver exceptional products, services, and solutions. Our vision is to be recognized globally as the premier supplier of hydraulic components.
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Answer:The standard lead time for production is typically around one month after receiving payment, ensuring meticulous attention to detail and quality in every unit.
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