Introducing our groundbreaking HLPSL and HLPSV load-sensitive proportional multi-way directional spool valves. These revolutionary engineering marvels 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 allow multiple actuators to operate simultaneously under varying loads, providing 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)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 Enhancing Circulating Pressure (~14 bar, HLPSL);
(4)Pilot Oil Circuit Pressure Options: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, pressurizes pump when powered, unloads pump when unpowered; D - normally closed magnetic ball valve, unloads pump when powered, pressurizes when unpowered; D./F. . , with Pressure Limiting Valve, serves as secondary pressure (F50) with indicated pressure value;
(6)Tool Adjustable, Pressure Limiting Valve in Connection Block: Sets available at 63, 120, 210, 280, 315, 350, 400 bar; /NF: without pressure limiting valve (HLPSV only);
(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) Valve core function symbols: L, M, F, H, J, B, R, O, N;
(11) Output flow code for ports A & B: Choose from maximum output flows: 3, 6, 10, 16, 25, 40, 63, 80, 120, 160, 210 (L/min);
(12) Secondary pressure limitations: 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) ON/OFF function and pressure outlet types: 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 with long handle (1=without handle, 2=with short handle); E, electric proportional control; EA(1,2), electric proportional and manual (1=without handle, 2=with short handle); D, electric switching value control; DA(1,2), electric switching value and manual (1=without handle, 2=with short handle); M, manual friction positioning with long handle; H, pure hydraulic (two pilot oil ports align with oil ports A and B); F, pure hydraulic (two pilot oil ports perpendicular to oil ports A and B, outward respectively);
(15) Ancillary block port sizes: /2, G3/8; /3, G1/2; /4, G3/4; /5, G1;
(16) End plate types: E1, standard end plate, external discharge of pilot oil, connecting oil return control port T externally; E2, similar to E1 with additional port Y; E3, external discharge of pilot oil with a 2-position 3-way magnetic ball valve; system pressure rises to safety valve pressure with power supply;
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 cable lengths: G12-12VDC;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 become a beacon of groundbreaking innovation and unmatched excellence in the hydraulic industry. As a prestigious subsidiary of the esteemed China Baoan Group (stock code: 000009), we stand proudly as a distinguished national high-tech enterprise. Specializing in the research, development, manufacturing, and sales of top-tier hydraulic components, our 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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