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High Vacuum Diaphragm Valve Leak Free 316L EP for Semiconductor and Industrial Gas

High Vacuum Diaphragm Valve Leak Free 316L EP for Semiconductor and Industrial Gas

Engineered for precision, our high vacuum diaphragm valve offers a seal-less, zero-leakage solution for demanding environments. Constructed from 316L EP stainless steel, it ensures high purity, corrosion resistance, and long-term reliability in semiconductor, solar, and chemical processing industries.

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Product Details

This high-performance High Vacuum Diaphragm Valve is a precision-engineered vacuum isolation and flow regulation component specifically designed for high-end manufacturing environments such as semiconductors, photovoltaics, LCD panels, and chemical processing. Utilizing a glandless diaphragm structure, it operates reliably across the entire pressure spectrum from ultra-high vacuum (1×10⁻⁹ Pa) to atmospheric pressure (1×10⁵ Pa). It ensures safe and dependable on-off control even in harsh chemical, corrosive, and flammable or explosive gas environments.

Core Features

Glandless Zero-Leak Design The unique glandless structure completely eliminates the leakage risks associated with traditional valve stem seals. Compared to other valves with packing glands, it offers superior non-leakage reliability, making it the ideal choice for high-purity vacuum systems.

Dual Drive Modes Supports both Pneumatic Actuators (Normally Closed/Normally Open) and Manual Actuators, adapting to both automated continuous production lines and manual laboratory operations.

316L Stainless Steel Cleanliness The valve body is made of SUS316L EP grade (Electropolished) material. The surface is ultra-smooth with low adsorption and low outgassing properties, providing excellent corrosion and high-temperature resistance for high-purity gas systems.

Versatile Flange Compatibility Standard connections include piston flanges, quick-release flanges, welded types, and VCR 1/4" micro/precision interfaces, allowing for flexible installation across various high-end vacuum pipelines.

Zero Dead Space & Long Life The corrosion-resistant diaphragm requires low closing torque and offers an extended service life. The diaphragm pressure is automatically adjusted for uniform sealing, featuring a "zero dead space" structure that prevents particle retention.

Explosion-Proof Safety Engineered for the transport and isolation of flammable, explosive, and toxic gases, ensuring zero leakage and zero contamination with an extremely high safety factor.

Product Specifications

Connection Diameter (mm)	Body Material	Actuator Type	Example Model
6.0 ~ 10.0	SUS316L EP	Pneumatic Control	VAvat-QG2CV-UG6.0~10.0
1/4" (6.35)	SUS316L EP	Manual Control	VAvat-SG2CV-UG6.35
Custom Sizes	SUS316L EP	Pneumatic/Manual	Available on Request

Application Fields

1. Semiconductor Manufacturing: Essential for gas/fluid isolation in wafer fabrication, lithography, etching, and deposition processes.
2. Solar PV & LCD Panels: Ensures stable, high-cleanliness environments for cell and panel production, boosting yield rates.
3. Bio-engineering & Pharmaceuticals: Ideal for sterile vacuum systems, freeze-drying, and vaccine R&D where cross-contamination must be eliminated.
4. Chemical & Special Gases: Provides safe, leak-free isolation for corrosive, flammable, or toxic gases in petrochemical and new energy sectors.
5. Precision Analytical Instruments: Used in mass spectrometers, gas chromatographs, and leak detectors for precise trace gas control.

Why Choose Our Diaphragm Valve?

Our valves are the benchmark for vacuum isolation solutions. By eliminating mechanical seals, we remove the risk of particle contamination and gas leakage. Whether you are dealing with corrosive environments or require ultra-high cleanliness, our 316L EP grade valves provide a robust, long-lasting solution. They are the preferred standard for high-reliability isolation in semiconductor and photovoltaic industries.

Zero Leakage: No gland means no path for leaks or contamination.
High Cleanliness: EP-grade surfaces minimize gas adsorption.
Stability: Maintains seal integrity even during power or air supply failure.
Wide Range: Compatible with vacuum pump accessories across DN6 to DN250 specifications.

Frequently Asked Questions

1. What is the primary purpose of this valve?

It is used for vacuum isolation and on-off control in high-precision systems like semiconductor manufacturing, bio-engineering, and chemical processing.

2. How does it achieve zero contamination?

By using a glandless diaphragm design, there are no moving mechanical seals that could shed particles or allow atmospheric air to seep into the vacuum chamber.

3. Can it handle toxic or explosive gases?

Yes, the hermetic diaphragm seal and 316L stainless steel construction make it exceptionally safe for hazardous gas applications.

4. What drive options are available?

We offer pneumatic control for automated high-frequency operations and manual control for laboratory or precision debugging needs.

Conclusion：High Vacuum Diaphragm Valve Suitable for Semiconductor, Photovoltaic, Bio-pharmaceutical, and Chemical industries, The core advantage is the glandless zero-leakage design combined with 316L EP high-cleanliness material and zero dead space for long-life reliability。

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