Introducing the revolutionary HLPSL and HLPSV load-sensitive proportional multi-way directional spool valves. These masterpieces of engineering harmoniously integrate pressure, flow, and direction control into a single, cohesive unit. Typically composed of three vital functional modules: connecting blocks, directional valves, and end plates, these valves are designed with precision for hydraulic systems in engineering machinery. They expertly control the movement direction and speed of hydraulic cylinders, motors, and other actuators. Highlighted features include a compact structure, superior energy efficiency, and the capability for stepless speed control. Moreover, they proficiently enable multiple actuators to operate simultaneously under varying loads, ensuring unmatched performance and versatility.
The HLPSL valves are meticulously crafted for constant displacement pump systems, while the HLPSV valves are engineered for variable pump systems. Although the HLPSV valves may exhibit a marginally slower response time, they surpass expectations by delivering exceptional energy-saving performance. This makes them the ideal choice for applications where efficiency is of utmost importance.
| 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; Featuring A, ancillary block or intermediate transition block ZPL 5S(V)/H hydraulic control shut-off valve for versatile applications.
(9)Directional valve block inflow controller options: 1, without inflow controller; 2, standard inflow controller; 4, 3-way flow controllers for inlet and outlet (perfect for N 3/3-way valve); 5, reinforced 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 options for ports A & B typically include 3, 6, 10, 16, 25, 40, 63, 80, 120, 160, 210 (L/min);
(12) Secondary pressure limitation choices: N, no pressure limiting protection; C, limit pressure of actuator ports A & B simultaneously; A---B---, limit pressure of actuator ports A & B separately, measured in units (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 modes: 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 port sizes: /2 G3/8; /3 G1/2; /4 G3/4; /5 G1;
(16) End plate configurations: E1, standard end plate, external discharge of pilot oil with connection to oil return control port T externally; E2, similar to E1 but with port Y additionally attached; E3, external discharge of pilot oil, equipped with a 2-position 3-way magnetic ball valve ensuring system pressure rises to safety valve pressure in power supply scenarios.
E4, similar to E1, internal discharge of pilot oil with port T being sealed; E5, similar to E2, internal discharge of pilot oil with port T being sealed; E6, similar to E3, internal discharge of pilot oil with port T being sealed.
(17) Control voltage and cable length for anti-explosion type: G12-12VDC;G24-24VDC; G24Ex-3m-24VDC; G12Ex-3m-12VDC; G24MA-3m-24VDC; G12MA-3m-12VDC (anti-explosion type, guide line lengths available: 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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