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 one cohesive unit, ensuring peak performance and reliability. Typically composed of three essential functional modules-connecting blocks, directional valves, and end plates-these valves are designed specifically for hydraulic systems in top-tier engineering machinery. They expertly manage the movement direction and speed of hydraulic cylinders, motors, and other actuators, guaranteeing precision and control. Key features include a compact structure, exceptional energy efficiency, and the capability for stepless speed control. Furthermore, they enable multiple actuators to operate in unison under varying loads, delivering unmatched performance and versatility for any application.
The HLPSL valves are meticulously tailored for constant displacement pump systems, ensuring consistent and reliable operation. In contrast, the HLPSV valves are expertly engineered for variable pump systems. While 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. With their advanced engineering and energy-efficient design, HLPSV valves stand out 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 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 inlet and outlet (ideal for N 3/3-way valve); 5. Strengthened inflow controller; 8. Pre-selectable;
(10) Function symbols 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 (typically select from: 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 manners: 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 with external discharge of pilot oil, connecting oil return control port T externally; E2. Similar to E1, with external discharge of pilot oil and additional port Y; E3. External discharge of pilot oil, with 2-position 3-way magnetic ball valve mounted; in power supply scenarios, the system pressure rises to the safety valve pressure;
E4. Similar to E1, with internal discharge of pilot oil, port T can be sealed; E5. Similar to E2, with internal discharge of pilot oil, port T can be sealed; E6. Similar to E3, with internal discharge of pilot oil, port T can be sealed;
(17) Control voltage and the length of anti-explosion type cable options: G12-12VDC;G24-24VDC; G24Ex-3m-24VDC; G12Ex-3m-12VDC; G24MA-3m-24VDC; G12MA-3m-12VDC (anti-explosion type, length of guide line available: 3m, 5m, 10m, etc.)
Since our inception in 2009, Jiangsu KM Hydraulic Control System Co., Ltd. has illuminated the hydraulic industry with a beacon of innovation and excellence. As an esteemed member of the China Baoan Group (stock code: 000009) and a proud national high-tech enterprise, we excel in the research, development, manufacturing, and sales of hydraulic components of unparalleled quality. Our accolades include being designated a national 'specialized, refined, and innovative' small giant enterprise, highlighting our steadfast commitment to technological advancement and superior quality.
Our flagship product, the load-sensitive proportional valve, is the epitome of advanced hydraulic system control, meticulously engineered for construction machinery and heavy-duty equipment. This versatile component is essential in emergency rescue operations, tunnel engineering, mining, and municipal service vehicles. We proudly collaborate with numerous leading domestic manufacturers, playing a pivotal role in the localization of core hydraulic components for high-end mechanical equipment. Guided by our core philosophy-'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 be recognized globally as a trusted supplier of premier hydraulic components.
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