Wenzhou Prance Hydraulic Equipment Co., Ltd
How do you choose a hydraulic sectional valve for multi-actuator equipment?
Sectional valve selection for multi-actuator equipment starts with an actuator-to-section map. Build that map first, then add inlet, flow-sharing and control details so the RFQ describes a real bank instead of a vague valve request.
Part 1. Why does multi-actuator equipment need a section map?
Each work function may need a different spool, flow and holding behavior. A single generic valve description cannot capture simultaneous functions on one machine.
Part 2. Which inlet and flow-sharing questions come next?
State pump flow into the inlet section, whether functions operate together, and whether priority or load-sense logic is required. Simultaneous flow demand often changes bank sizing.
Part 3. How should each section be described for quotation?
| Section field | Example | Send with quote |
|---|---|---|
| Actuator served | Boom / crowd / swing | Yes |
| Spool / center need | Float, hold, motor | Yes |
| Approx. flow | Continuous / peak | Yes |
| Control interface | Lever, solenoid, electrohydraulic | Yes |
Number the sections in machine order so assembly orientation stays clear.
Part 4. Which work-port and relief details are easy to omit?
Port sizes, relief location, anticavitation needs and auxiliary valves at the section often decide whether a bank fits. Capture them before assuming a standard mid-section is enough.
Part 5. How do control interfaces affect the whole bank?
A mixture of manual, solenoid and joystick inputs changes end-section and wiring needs. State the preferred interface per section instead of one label for the entire valve.
Part 6. What package makes a sectional-valve RFQ reviewable?
Provide actuator map, inlet flow, pressure, fluid, section-by-section notes, envelope limits and control interfaces.
- Product-family route: valve range review after the section map is complete
- Send with quote: section table and inlet arrangement
- Fit boundary: bank configuration is assembly-specific
Important: Do not quote a sectional bank from actuator count alone; section functions, inlet flow and interfaces must be mapped first. — Parker basic hydraulic formulas
Use the following related guidance during the review:
For a product-family review, start with the hydraulic valves range, review the directional valve 4WE route when relevant, then submit the full application through the contact page. A model recommendation requires the applicable datasheet and complete operating inputs.
FAQs
What is a hydraulic sectional valve?
A valve assembly built from inlet, work and end sections so multiple actuators can be controlled in one bank.
Why list every actuator in the RFQ?
Each actuator can need a different spool, flow and control interface.
Does inlet flow equal the sum of all section flows?
Not always. Simultaneous versus sequential operation changes the required inlet capacity.
Can sectional and monoblock valves be compared casually?
Only after function count, serviceability and envelope needs are stated.
What control details matter for a bank?
Per-section operator type, electrical data and any joystick or remote requirement.
What should a buyer provide?
Actuator map, flows, pressures, fluid, interfaces, envelope and documentation needs.
References
- Parker basic hydraulic formulas — flow and pressure inputs used when mapping multi-actuator sectional banks.
- Danfoss Series 40 technical information — condition-bound data discipline for multi-section hydraulic assemblies.
