Introducing our groundbreaking HLPSL and HLPSV load-sensitive proportional multi-way directional spool valves. These revolutionary engineering marvels seamlessly integrate pressure, flow, and directional control into a single, harmonious unit, guaranteeing unmatched performance and reliability. Typically composed of three essential functional modules-connecting blocks, directional valves, and end plates-these valves are meticulously crafted for incorporation into high-end hydraulic systems, pivotal in top-tier engineering machinery. They precisely govern the movement direction and speed of hydraulic cylinders, motors, and other actuators, delivering unparalleled precision and control. Key highlights include a compact structure, superior energy efficiency, and the capability for stepless speed control. Furthermore, they enable multiple actuators to operate simultaneously under varying loads, offering unrivaled performance and versatility for any application.
The HLPSL valves are expertly tailored for constant displacement pump systems, ensuring steadfast and reliable operation. Conversely, the HLPSV valves are masterfully engineered for variable pump systems. While HLPSV valves may exhibit a slightly slower response time, they excel in delivering exceptional 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 advanced 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) Essential Connection Block Codes Guide
HLPSL: Constant Displacement Pump;
HLPSV: Variable Displacement Pump;
(2) Detailed Specifications for Connection Block Ports P & R:
2-G3/8;
3-G1/2;
4-G3/4;
5, 55-G1;
6-G1 1/4;
(3) Additional Essential Components and Specifications:
C,Standard Type;
G,Throttle Valve (Specifically for HLPSL);
H,Fixed Differential Overflow Valve for Enhanced Circulating Pressure (Approx. 14 bar for HLPSL);
(4) Pilot Oil Circuit Pressure Options0 - No pressure reducing valve; 1 - Pressure reducing valve (20 bar); 2 - Pressure reducing valve (40 bar);
(5) 2/2-Way Magnetic Ball Valve for System UnloadingC - No magnetic ball valve; F - Normally open magnetic ball valve, pressurizes pump when powered, unloads pump when unpowered; D - Normally closed magnetic ball valve, unloads pump when powered, pressurizes when unpowered; D./F. . , Equipped with Pressure Limiting Valve for Secondary Pressure (F50) with Specified Pressure Value;
(6) Tool Adjustable Pressure Limiting Valve in Connection Block: Settings available at 63, 120, 210, 280, 315, 350, and 400 bar; /NF: No pressure limiting valve (HLPSV only);
(7) Product Series Classification;-2 2 Series; -3 3 Series; -5 5 Series;
(8)Thread size of directional spool valve ports A & B:2-GAvailable thread sizes: 3/8, 3-G1/2, 4-G3/4, 5-G1. Additionally, there is an 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 available: L, M, F, H, J, B, R, O, N.
(11) Output flow code of ports A & B: Select from maximum output flows of 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: 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, with port Y additionally attached; E3 - external discharge of pilot oil with a 2-position 3-way magnetic ball valve, system pressure rises to the safety valve pressure upon power supply; 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.
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 anti-explosion type cable length options: G12 - 12VDC; G24 - 24VDC; G24Ex-3m-24VDC; G12Ex-3m-12VDC; G24MA-3m-24VDC.G24-24VDC; G24Ex-3m-24VDC; G12Ex-3m-12VDC; G24MA-3m-24VDC; G12bb621436
Since our inception in 2009, Jiangsu KM Hydraulic Control System Co., Ltd. has been a beacon of groundbreaking innovation and unmatched excellence in the hydraulic industry. As a prestigious subsidiary of the renowned China Baoan Group (stock code: 000009), we proudly stand as a distinguished national high-tech enterprise. Specializing in the research, development, manufacturing, and sales of top-tier hydraulic components, our esteemed status as a national 'specialized, refined, and innovative' small giant enterprise underscores our unwavering commitment to technological advancement and superior quality. This relentless dedication positions us as vanguards in our field.
Our flagship product, the load-sensitive proportional valve, represents the pinnacle of advanced hydraulic system control. Expertly crafted for construction machinery and heavy-duty equipment, this versatile and adaptable component is indispensable in high-stakes applications such as emergency rescue operations, tunnel engineering, mining, and municipal service vehicles. We take immense pride in our strategic collaborations with numerous leading domestic manufacturers, playing a pivotal role in localizing 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 resolute in our commitment to delivering exceptional products, services, and solutions. Our mission is to ascend as a globally trusted supplier of premier hydraulic components, setting new benchmarks of excellence worldwide.
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