Solenoid valves are mainly divided into 3 types by working principle: direct acting, semi-direct, and pilot operated, with 6 subcategories based on structure and material.
1. Direct Acting Solenoid Valve
Principle:
Energized with power → magnetic force lifts closure member, valve opens;
De-energized without power→ spring resets, valve closes.
Features: Works for vacuum/negative/zero pressure; Nominal diameter ≤25mm.
2. Semi-Direct Acting Solenoid Valve
Principle: Combines direct & pilot principles. No pressure difference: direct magnetic force opens valve; With pressure difference: pressure differential pushes main valve open.
Features: Works for zero pressure/vacuum/high pressure; High power; Horizontal installation required.
3. Pilot Operated Solenoid Valve
Principle:
Energized → pilot orifice opens, pressure differential opens valve;
De-energized → pilot orifice closes, valve shuts.
Features: High pressure applicable; Customizable installation; Requires minimum pressure differential.
Founded in 2009, JOOSUNG is a trusted professional manufacturer of a full range of pneumatic and hardware components, adhering to European standards. With CE, ISO certifications and strict quality control over every product, like solenoid valve, cylinder and all fittings, it provides custom machining and automation project support, offering high-quality pneumatic components to support your marketing and design.
