HSSD15 Directional control valve

Analysis of the relevant situation of HSSD15 series multi-way directional control valve
1. Technical characteristics
Structure composition: Multi-way directional control valves usually have more than two directional control valves as the main body, and integrate additional valves such as the main relief valve and the anti-interference check valve.The HSSD15 series may adopt a similar design, and the integrated control of the hydraulic system is realized through a modular combination.
Oil circuit form: A typical multi-channel directional control valve includes three oil circuit structures: parallel, series and series-parallel.The HSSD15 series may provide a variety of oil circuit configurations. Among them, the parallel oil circuit is the most widely used because it can operate multiple actuators at the same time and prioritizes action when the load is light.
Chip structure: The chip design allows 2-6 pieces of valve body to be freely combined, but more than 6 pieces may increase the risk of leakage between pieces.The HSSD15 series may adopt this structure to adapt to the control needs of different actuators by increasing or decreasing the number of valve plates.
Unloading method: It supports two modes of middle unloading and safety valve unloading.The HSSD15 series may be equipped with a mid-position unloading function to achieve low-voltage standby of the system when the valve core is in the mid-position, reducing energy consumption and heat generation.
Operation method: it covers manual operation and pilot control operation.Manual operation has a compact structure but high maneuverability; pilot control (including pressure reducing control and electro-hydraulic proportional pressure reducing valve control) enables more accurate pressure and flow adjustment through remote control. The HSSD15 series may provide these two manipulation options.

2. the application field
Construction machinery: It is widely used in hydraulic systems of loaders, excavators, cranes and other equipment, and realizes composite actions through centralized control of multiple actuators.The HSSD15 series may be optimized for such scenarios to meet the needs of high pressure and large flow.
Mining machinery: In rock drilling rigs, underground boring machines and other equipment, multi-channel directional control valves need to adapt to harsh working conditions.The HSSD15 series may ensure reliability in the mine environment by strengthening the sealing performance and anti-pollution ability.
Agricultural machinery: tractors, combine harvesters and other equipment need to control multiple hydraulic cylinders and motors at the same time.The HSSD15 series may provide a lightweight design, suitable for mobile hydraulic systems of agricultural machinery.
Industrial hydraulic system: In machine tools, presses and other equipment, multi-way directional control valves are used to control the feed, clamping and other actions of hydraulic cylinders.The HSSD15 series can realize micro-motion control and synchronous action through the high-precision spool valve function.

3. Performance parameter estimation
Nominal diameter: Referring to similar products (such as VDL-15 multi-way directional control valve), the nominal diameter of the HSSD15 series may be 15mm, which is suitable for small and medium-sized hydraulic systems.
Nominal pressure: Multi-way valves for construction machinery usually need to withstand a pressure of 20-31.5MPa. The HSSD15 series may be set within this range to meet the needs of high-pressure hydraulic systems.
Nominal flow rate: According to the valve body size and oil circuit design, the nominal flow rate of the HSSD15 series may be between 60-160L/min, covering the application scenarios of light to medium-sized equipment.
Connection method: Two options may be provided: threaded connection and flange connection. Threaded connection is suitable for occasions with compact space, and flange connection is easy to maintain and replace.

4.  selection suggestions
Confirm the requirements of working conditions: according to the type of equipment (such as construction machinery, industrial equipment), working pressure and flow parameters, select the matching HSSD15 series model.
Oil circuit form selection: parallel oil circuit is suitable for scenarios that require simultaneous action; series oil circuit is suitable for sequence action control; series and parallel oil circuit provides a more flexible combination method.
Matching operation methods: manual operation is suitable for occasions with low operating frequency and sufficient space; pilot control (especially electro-hydraulic proportional control) is suitable for systems that require remote and precise adjustment.
Configuration of additional functions: Choose whether to integrate additional functions such as buffer valve and oil replenishment valve according to your needs to optimize system performance (such as reducing hydraulic impact and maintaining back pressure)..