The YSE-A series pilot-operated stainless steel ultra-high pressure solenoid valve (nominal diameter ranging from DN10 to DN25) is a high-end, ultra-high pressure fluid control device specially developed for ultra-high pressure, large-flow fluid transmission and extremely severe operating conditions. As a core shut-off element in ultra-high pressure automated pipeline systems, this series features deep structural optimization targeting common industry pain points under 700bar (70MPa) ultra-high static pressure and large-bore working conditions, such as the inability to open under low pressure differentials, valve core deformation under high-pressure shocks, and seal erosion under large flow rates. The entire series comes standard with high-specification SS304 stainless steel bodies and offers two highly reliable interface types: G thread and NPT thread. It is widely used in high-pressure hydrogen storage and transportation, ultra-high pressure hydraulic pump stations, aerospace ground testing, and high-end industrial cleaning systems.

This series of valves utilizes a pilot-operated control mechanism and belongs to the normally closed automatic valve type. Its core advantage lies in the innovative zero-differential pilot drive structure, which perfectly combines the rigid control of electromagnetic force with the fluid dynamics of the medium's own pressure differential. When the electromagnetic coil is de-energized, the pilot valve port remains closed under the action of the return spring force. The medium enters the cavity above the main piston through the fluid channel, forming a balanced or top-high-bottom-low pressure distribution across the upper and lower ends of the piston. Under the combined sealing action of the main spring force and the 700bar ultra-high medium pressure, the main piston is tightly pressed against the main valve seat, achieving absolutely reliable, zero-leakage high-pressure shut-off.

When the electromagnetic coil is energized, a specially customized high-power, super-magnetic coil instantly generates a powerful electromagnetic attraction force that first pulls open the pilot valve port. Thanks to its special forced-lift mechanism, even in an extreme zero-pressure state where the system pressure differential is 0bar, the electromagnet can directly lift the main piston mechanically via a linkage, ensuring 100% precise actuation. When a pressure differential exists in the system, the medium in the cavity above the main piston quickly relieves pressure to the outlet end through the pilot hole, utilizing the huge pressure differential thrust of the fluid to push the main piston to the fully open position, restoring highly efficient, large-flow passage. Once the coil is de-energized, the electromagnetic field disappears, and the pilot hole and main piston reset downward at high speed within milliseconds, completing a rapid and rigid high-pressure cut-off cycle.

Product Image:YSE-A 2/2-Way Normally Closed Ultra-High Pressure Solenoid Valve

Forced pilot-operated zero-differential startup, perfectly compatible with the full pressure range from 0 to 700bar: Traditional pilot valves must rely on a working pressure differential under large-bore conditions, while conventional direct-acting valves cannot handle large bores under 700bar ultra-high pressure. The YSE-A series ingeniously combines the advantages of both by adopting a unique forced-linkage pilot structure. Whether the system is in a zero-differential vacuum state without pressure or an ultra-high pressure environment up to 700bar, the valve can achieve millisecond-level response speeds, completely solving the industry pain point where ultra-high pressure test pipelines cannot start under low or zero pressure states.

SS304 all-stainless steel heavy-load structure, powerful yield resistance and anti-scouring performance: Internal components are precisely manufactured from high-quality SS304 stainless steel to withstand the destructive scouring force and cavitation damage generated when 700bar extreme high-pressure fluid flows through large-bore valve ports of DN10~25. The stainless steel valve body possesses extremely high yield strength and never undergoes any microscopic deformation under 700bar ultra-high pressure, perfectly eliminating the common phenomena of incomplete closure or piston jamming caused by body deformation.

Super-magnetic high-power coil configuration, ensuring rigid and stable output torque: Since opening a large-bore pilot hole under 700bar pressure requires overcoming massive surface tension and high-pressure clamping force, the YSE-A series is equipped with an ultra-high-power coil customized through precise electromagnetic field simulation. The coil interior is tightly wound with high-temperature resistant pure copper enameled wire. Although the output actuation torque is extremely powerful, it adopts advanced heat dissipation and low-power temperature rise design, supporting all-weather, high-frequency continuous energization.

Micron-level high-pressure thread standards, ensuring absolutely long-lasting and safe system connection: The product provides G and NPT industrial ultra-high pressure threads. The thread processing accuracy reaches the micron level, capable of withstanding severe pipeline vibration, pressure pulsations, and thermal expansion and contraction under 700bar ultra-high pressure conditions. It achieves seamless original-position tightening with various overseas and domestic ultra-high pressure cylinder groups and high-pressure pump stations, eliminating common hazards of interface bursting.

Structure Diagram:YSE-A 2/2-Way Normally Closed Ultra-High Pressure Solenoid Valve

Specification Sheet

Outline Diagram:YSE-A 2/2-Way Normally Closed Ultra-High Pressure Solenoid Valve

Outline Dimension Table   （Unit:mm）