Introducing the revolutionary HLPSL and HLPSV load-sensitive proportional multi-way directional spool valves. These cutting-edge solutions masterfully blend pressure, flow, and direction control into a singular, harmonious unit. Typically composed of three pivotal functional modules: connecting blocks, directional valves, and end plates, they are tailor-made for hydraulic systems in advanced engineering machinery. These valves proficiently govern the movement direction and velocity of hydraulic cylinders, motors, and a myriad of other actuators. Key attributes include a sleek, compact structure, outstanding energy efficiency, and the ability for seamless, stepless speed control. Moreover, they facilitate the synchronized operation of multiple actuators under various load conditions, delivering unmatched performance and versatility.
The HLPSL valves are specifically designed for constant displacement pump systems, while the HLPSV valves are meticulously engineered for variable pump systems. Although HLPSV valves might manifest a slightly slower response time, they outshine others in providing exceptional energy-saving performance, making them the ideal choice for applications where maximum efficiency is crucial.
| 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: 1 - without inflow controller; 2 - standard inflow controller; 4 - 3-way flow controllers for inlet and outlet (perfect for N 3/3-way valve setups); 5 - enhanced 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 (typically choose 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: 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: /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 additionally attached; E3 - external discharge of pilot oil, a 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, 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 a beacon of innovation and excellence within the hydraulic industry. As an esteemed member of the China Baoan Group (stock code: 000009), and honored as a national high-tech enterprise, we excel in the research, development, manufacturing, and sales of superior hydraulic components. Our recognition extends to being designated as a national 'specialized, refined, and innovative' small giant enterprise, underlining our commitment to technological advancement and quality.
Our flagship product, the load-sensitive proportional valve, epitomizes advanced hydraulic system control, specifically engineered for construction machinery and heavy-duty equipment. This adaptable component is indispensable in emergency rescue operations, tunnel engineering, mining applications, and municipal service vehicles. We proudly collaborate with numerous prominent domestic manufacturers, significantly contributing to the localization of core hydraulic components for high-end mechanical equipment. Guided by our core philosophy of '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 become a globally trusted supplier of premier hydraulic components.
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