Bellows Sealed Stainless Steel Gate Valves (Manual)

Bellows Sealed Stainless Steel Gate Valves (Manual) for Vacuum Isolation

ThinFilmMaterials offers high-performance Bellows Sealed Stainless Steel Gate Valves (Manual) designed for vacuum isolation in high and ultra-high vacuum systems. These manually operated valves feature a welded bellows stem seal that completely eliminates dynamic O-ring sealing, ensuring zero atmospheric leakage and exceptional durability in demanding vacuum environments.

Each Bellows Sealed Stainless Steel Gate Valve (Manual) is constructed from corrosion-resistant 304L or 316L stainless steel and includes a precision-machined gate, body, and knife-edge sealing design. The bellows assembly is fully welded and tested to ensure long cycle life, even under repeated thermal and mechanical cycling.

Key Features:

• All-metal construction with welded stainless steel bellows

• Vacuum-rated to 10⁻⁹ Torr and lower

• Available sizes: from 1.5″ to 8″ port diameters

• Manual handwheel operation with visual open/close indicator

• Flange types: CF, ISO-F, or custom connections available

• Low particle generation and high repeatability

Applications:

Bellows Sealed Stainless Steel Gate Valves (Manual) are commonly used in:

• Semiconductor vacuum process tools

• Thin film deposition chambers (PVD, CVD, ALD)

• Research and development vacuum systems

• Load-locks and transfer chambers

• Surface analysis and beamline systems

These gate valves provide secure, repeatable sealing in applications where elastomer-free design is critical. ThinFilmMaterials also offers optional modifications such as limit switches, viewport ports, and high-temperature preparation for custom integration.