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 singular, 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 designed 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. Additionally, 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. Although 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 for 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 Specifications:
C,Standard Type;
G,Throttle Valve (Exclusively for HLPSL);
H,Fixed Differential Overflow Valve to Enhance Circulating Pressure (approx. 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, when power is supplied, the pump is pressurized; upon power failure, the pump performs unloading; D: normally closed magnetic ball valve, when power is supplied, the pump performs unloading; upon 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 available in 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, non-inflow controller; 2, standard inflow controller; 4, 3-way flow controllers for both inlet and outlet (known for N 3/3-way valve); 5, reinforced inflow controller; 8, pre-selectable inflow controller;
(10) Valve core function symbols: L, M, F, H, J, B, R, O, N;
(11) Output flow rates of ports A & B: Choose from the following maximum output flows (in L/min): 3, 6, 10, 16, 25, 40, 63, 80, 120, 160, 210;
(12) Secondary pressure limitation: N, no pressure limiting protection; C, limits pressure of actuator ports A & B simultaneously; A---B---, limits pressure of actuator ports A & B independently, measured in 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, electric ON/OFF on side A; B, electric ON/OFF on side B;
(14) Operation method: 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 combined with manual operation (1=without handle, 2=with short handle); D, electric switching value control; DA(1,2), electric switching value control combined 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 perpendicular to and outward from oil ports A and B);
(15) Ancillary block port sizes: /2-G3/8; /3-G1/2; /4-G3/4; /5-G1;
(16) End plate options: E1, standard end plate with external discharge of pilot oil, connects oil return control port T externally; E2, similar to E1, with an additional port Y for external discharge of pilot oil; E3, includes a 2-position 3-way magnetic ball valve for external discharge, causing the system pressure to rise to the safety valve pressure in power scenarios;
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 anti-explosion cable length: G12-12VDC;G24-24VDC; G24Ex-3m-24VDC; G12Ex-3m-12VDC; G24MA-3m-24VDC; G12MA-3m-12VDC (anti-explosion type, with guide line lengths: 3m, 5m, 10m, etc.)
Since our inception in 2009, Jiangsu KM Hydraulic Control System Co., Ltd. has emerged as a beacon of groundbreaking innovation and unmatched excellence in the hydraulic industry. As a prestigious member of the China Baoan Group (stock code: 000009), we are proud to be recognized as a national high-tech enterprise. Our forte lies in the research, development, manufacturing, and sales of premium hydraulic components. Our esteemed status as a national 'specialized, refined, and innovative' small giant enterprise signifies our relentless dedication to technological advancement and superior quality, positioning us as a leader in the field.
Our flagship product, the Load Sensitive Valve for Enhanced Truck Crane Safety Technology, stands at the pinnacle of advanced hydraulic system control. Meticulously engineered 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 pride ourselves on strategic collaborations with numerous leading domestic manufacturers, playing a pivotal role in localizing core hydraulic components for high-end mechanical equipment. Anchored by our core philosophy - 'Serving customers with technology, impressing customers with our attitude, and retaining customers with quality' - we are steadfast 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 standards of excellence worldwide.
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Answer:The lead time for production is typically one month following receipt of payment. This carefully considered timeframe allows us to meticulously prepare and conduct stringent quality control, ensuring your products are delivered flawlessly and meet the highest standards of excellence.
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Answer: We offer an exceptionally low minimum order quantity, making even a single piece available for sample checking. This affords you maximum flexibility to meet your specific needs, whether small or large-scale projects.
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Answer: Absolutely, it is possible. Please inform us formally before production begins and confirm the design based on the sample we provide. This process ensures your branding is represented with utmost precision and quality, enhancing your product's appeal.
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