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. Specifically crafted for hydraulic systems in engineering machinery, these valves expertly manage the movement direction and speed of hydraulic cylinders, motors, and other actuators. Their standout 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, while 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. Choose HLPSV for unmatched energy conservation and HLPSL for robust consistent pressure handling.
| 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 Components:
C,Standard Type;
G,Throttle Valve (Only for HLPSL);
H,Fixed Differential Overflow Valve for Improved 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: Power Supplied - Pump Pressurized, Power Failure - Pump Unloading; D, Normally Closed Magnetic Ball Valve: Power Supplied - Pump Unloading, Power Failure - Pump Pressurized;../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 Include 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 options for directional spool valve ports A & B: 2-G3/8; 3-G1/2; 4-G3/4; 5-G1; Ancillary block or intermediate transition block ZPL 5S(V)/H hydraulic control shut-off valve;
(9)Directional valve block inflow controller settings: 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 symbols for valve core: L, M, F, H, J, B, R, O, N;
(11) Output flow code for ports A & B: Maximum output flow for ports A & B (typically choose from 3, 6, 10, 16, 25, 40, 63, 80, 120, 160, 210 L/min);
(12) Secondary pressure limitation settings: 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, specified in units (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 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 options: /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 types: 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 anti-explosion cable length options: G12-12VDC;G24-24VDC; G24Ex-3m-24VDC; G12Ex-3m-12VDC; G24MA-3m-24VDC; G12MA-3m-12VDC (anti-explosion type, length of guide line: available in 3m, 5m, 10m, and other lengths.)
Since our auspicious 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 celebrated 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 unwavering commitment to technological advancement and unsurpassed quality.
Our flagship product, the load-sensitive proportional valve, is the pinnacle of advanced hydraulic system control, meticulously 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 advancing 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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