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 Configuration
HLPSL: Constant Displacement Pump;
HLPSV: Variable Displacement Pump;
(2) Port P & R Specifications of the Connection Block:
2-G3/8;
3-G1/2;
4-G3/4;
5, 55-G1;
6-G1 1/4;
(3)Additional Component Options:
C,Standard Type;
G,Throttle Valve (Only for HLPSL);
H,Fixed Differential Overflow Valve for Enhanced Circulating Pressure (Approx. 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 - 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: 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 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 inflow control;
(10) Valve core function symbols: L, M, F, H, J, B, R, O, N;
(11) Output flow codes for ports A & B: Maximum output flow rates available for ports A & B (commonly selected: 3, 6, 10, 16, 25, 40, 63, 80, 120, 160, 210 (L/min);
(12) Secondary pressure limitation options: N, no pressure limiting protection; C, simultaneous pressure limit for actuator ports A & B; A---B---, separate pressure limits for actuator ports A & B, unit (bar);
(13) Function ON/OFF and pressure outlet options: 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 operation with long handle (1=without handle, 2=with short handle); E, electric proportional control; EA(1,2), electric proportional control with manual operation (1=without handle, 2=with short handle); D, electric switching value control; DA(1,2), electric switching value control with manual operation (1=without handle, 2=with short handle); M, manual friction positioning with long handle; H, pure hydraulic control (aligned pilot oil ports with oil ports A and B); F, pure hydraulic control (perpendicular pilot oil ports to oil ports A and B, and outward);
(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 pilot oil discharge, connects oil return control port T externally; E2, similar to E1 with additional port Y; E3, external pilot oil discharge with 2-position 3-way magnetic ball valve for power supply scenarios;
E4, similar to E1 with internal pilot oil discharge, sealable port T; E5, similar to E2 with internal pilot oil discharge, sealable port T; E6, similar to E3 with internal pilot oil discharge, sealable port T;
(17) Control voltage and anti-explosion cable length options: G12-12VDC;G24-24VDC; G24Ex-3m-24VDC; G12Ex-3m-12VDC; G24MA-3m-24VDC; G12MA-3m-12VDC (anti-explosion type, available in 3m, 5m, 10m lengths, etc.)
Since our establishment in 2009, Jiangsu KM Hydraulic Control System Co., Ltd. has stood as a pillar of innovation and excellence in the hydraulic industry. As a revered member of the China Baoan Group (stock code: 000009) and distinguished as a national high-tech enterprise, we specialize in the research, development, manufacturing, and sales of premium hydraulic components. Our accolades include being recognized as a national 'specialized, refined, and innovative' small giant enterprise, reflecting our unwavering commitment to technological advancement and unparalleled quality.
Our flagship product, the load-sensitive proportional valve, represents the pinnacle of advanced hydraulic system control. Specifically engineered for construction machinery and heavy-duty equipment, this versatile component is crucial in emergency rescue operations, tunnel engineering, mining applications, and municipal service vehicles. We proudly partner with numerous leading domestic manufacturers, playing a significant role in the localization of core hydraulic components for high-end mechanical equipment. Driven by our core philosophy of 'serving customers with technology, impressing customers with our attitude, and retaining customers with quality,' we remain steadfast in our dedication to delivering exceptional products, services, and solutions. Our mission is to be recognized globally as a trusted supplier of premier hydraulic components.
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