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. Typically, they consist of three essential functional modules: connecting blocks, directional valves, and end plates. Designed for hydraulic systems in engineering machinery, they expertly manage the movement direction and speed of hydraulic cylinders, motors, and other actuators. Notable features include a compact structure, exceptional energy efficiency, and the capability for stepless speed control. Additionally, they enable multiple actuators to operate in unison under varying loads, ensuring unparalleled performance and versatility.
The HLPSL valves are tailored for constant displacement pump systems, whereas the HLPSV valves are engineered for variable pump systems. Although 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.
| 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 14bar, 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 3series; -5 5series;
(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: 1, without inflow controller; 2, standard inflow controller; 4, 3-way flow controllers for inlet and outlet (applicable to N 3/3-way valve); 5, strengthened inflow controller; 8, pre-selectable;
(10) Function symbol 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 (generally select 3, 6, 10, 16, 25, 40, 63, 80, 120, 160, 210 (L/min);
(12) Secondary pressure limitation: N, without pressure limiting protection; C, limit the pressure of actuator ports A & B at the same time; A---B---, limit the pressure of actuator ports A & B respectively, 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 are in the same direction 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: /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: E1, standard end plate, external discharge of pilot oil, connecting oil return control port T externally; E2, similar to E1, external discharge of pilot oil, port Y is attached additionally; E3, external discharge of pilot oil, a 2-position 3-way magnetic ball valve is mounted; in case of power supply, the system pressure rises to the pressure of safety valve;
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 the length of anti-explosion type cable: G12-12VDC;G24-24VDC;G24Ex-3m-24VDC;G12Ex-3m-12VDC;G24MA-3m-24VDC;G12MA-3m-12VDC(anti-explosion type, length of guide line: 3m, 5m, 10m, etc.)
Since our inception in 2009, Jiangsu KM Hydraulic Control System Co., Ltd. has been at the forefront of innovation and excellence in the hydraulic industry. As a proud member of the China Baoan Group (stock code: 000009), and recognized as a national high-tech enterprise, we specialize in the research, development, manufacturing, and sales of premium hydraulic components. Additionally, we have earned the prestigious designation as a national 'specialized, refined, and innovative' small giant enterprise.
Our flagship product, the load sensitive proportional valve, stands as the pinnacle of hydraulic system control, tailored for use in construction machinery and equipment. This versatile component finds its applications in emergency rescue operations, tunnel engineering, mining equipment, and municipal vehicles. We take pride in our collaboration with numerous renowned domestic manufacturers, playing a pivotal role in the localization of core hydraulic components for high-end mechanical equipment. Guided by our philosophy of 'serving customers with technology, impressing customers with our attitude, and retaining customers with quality,' we are dedicated to offering exceptional products, services, and solutions. Our mission is to establish ourselves as a globally trusted supplier of hydraulic components.
FAQ
Q1. What about the lead time?
A:One month to produce after payment.
Q2. Do you have any MOQ limit for led light order?
A: Low MOQ, 1pc for sample checking is available.
Q3. How to proceed an order for led light?
A: Firstly let us know your requirements or application. Secondly We quote according to your requirements or our suggestions. Thirdly customer confirms the drawings and places deposit for formal order. Fourthly We arrange the production.
Q4. Is it OK to print my logo on product?
A: Yes. Please inform us formally before our production and confirm the design firstly based on our sample.
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