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, guaranteeing peak performance and reliability. Composed of three essential functional modules-connecting blocks, directional valves, and end plates-these valves are designed specifically for the hydraulic systems in elite engineering machinery. They expertly manage the movement direction and speed of hydraulic cylinders, motors, and other actuators, ensuring precision and control. Key features include a compact structure, exceptional energy efficiency, and the capability for stepless speed control. Moreover, they enable multiple actuators to operate in harmony under varying loads, delivering unparalleled performance and versatility for any application.
The HLPSL valves are meticulously crafted for constant displacement pump systems, ensuring consistent and reliable operation. Conversely, the HLPSV valves are expertly engineered for variable pump systems. While HLPSV valves may exhibit a slightly slower response time, they excel in providing superior energy-saving performance, making them the optimal choice for applications where efficiency is paramount. With their advanced engineering and energy-efficient design, HLPSV valves emerge as the premier solution for sophisticated hydraulic control needs.
| 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 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 Powered, the Pump is Pressurized; When Power Fails, the Pump Unloads; D: Normally Closed Magnetic Ball Valve, When Powered, the Pump Unloads; When Power Fails, 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 (ideal for 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: Experience precision with maximum output flow options for ports A & B, typically available in 3, 6, 10, 16, 25, 40, 63, 80, 120, 160, and 210 (L/min);
(12) Secondary pressure limitation: N, no pressure limiting protection; C, simultaneously limit the pressure of actuator ports A & B; A---B---, separately limit the pressure of actuator ports A & B, measured in bars;
(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 is additionally attached; E3, external discharge of pilot oil, a 2-position 3-way magnetic ball valve is 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; G122aebd9a5
Since our inception in 2009, Jiangsu KM Hydraulic Control System Co., Ltd. has emerged as a luminary of innovation and excellence in the hydraulic industry. As a proud member of the prestigious China Baoan Group (stock code: 000009) and honored as a national high-tech enterprise, we specialize in the research, development, manufacturing, and sales of top-tier hydraulic components. Our accolades include being named a national 'specialized, refined, and innovative' small giant enterprise, accentuating our steadfast commitment to technological advancement and unmatched quality.
Our flagship product, the load-sensitive proportional valve, represents the zenith of advanced hydraulic system control, meticulously designed for construction machinery and heavy-duty equipment. This indispensable and versatile component is essential in vital applications such as emergency rescue operations, tunnel engineering, mining, and municipal service vehicles. We are exceptionally proud of our partnerships with numerous leading domestic manufacturers, playing a pivotal 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 dedicated to delivering superior products, services, and solutions. Our mission is to ascend as a globally trusted supplier of premier hydraulic components.
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