Sectional Hydraulic Valve: Why Circuit Flexibility Matters
Selecting a sectional hydraulic valve often comes down to one practical question: how to control multiple actuators without over-sizing the valve body. This article looks at why fixed-port valves can create layout and cost issues in mobile equipment, and how a configurable section count from 1 to 12 helps builders match the valve to the actual circuit. Key specifications of the SD8 series are outlined, along with typical applications in construction, sanitation, drilling and agricultural machinery.
As equipment builders continue to face tight installation space in mobile hydraulic systems, valve selection increasingly focuses on matching section count to actual circuit needs.
For those working with construction, sanitation, drilling and agricultural machinery, installation space is limited and circuit requirements vary by machine. A fixed-configuration valve can force unnecessary compromises. A sectional hydraulic valve offers a more flexible approach.
The problem: fixed ports, limited space
Traditional valve selection often means choosing a body with a set number of working sections. Unused ports still take up space, and adding functions later may require replacing the valve entirely. In tight installations, every extra section adds length to the valve stack.
The solution: configurable section count
The SD8 Sectional Directional Control Valve from Laiye addresses this with a sectional structure supporting 1 to 12 sections. The valve can be configured to match the actual circuit rather than a preset port count.
View SD8 Sectional Directional Control Valve
Key specifications include:
Nominal flow: 80 L/min
Operating pressure: 315 bar (35 MPa)
Section pitch: 38 mm (1.50 in)
Ambient temperature: -40°C to +80°C
Surface treatment: phosphating, 48-hour neutral salt spray test
The compact 38 mm pitch becomes more useful as section count grows. For systems running long hours, internal leakage within 15 cc/min at 160 bar and 50°C also affects energy loss and oil temperature rise.
Where it fits
The SD8 is mainly used in construction machinery, sanitation equipment, drilling machinery, agricultural machinery and industrial hydraulic systems. Because the valve is sectional, a problem in one section can be handled separately without replacing the entire valve.
About Laiye
Laiye is the hydraulic valve brand under Onederful, founded in 1988. The SD8 is inspected before shipment, covering raw material, machining, assembly and pressure testing. OEM service is available with drawings and specifications.
