MDC’s 3 inch (76.2 mm) vacuum gate valves are meticulously designed for high vacuum (HV) and ultrahigh vacuum (UHV) applications where reliable flow control is critical. Constructed from durable 300-series stainless steel and featuring fusion-welded bodies, these valves are ideal for environments that demand exceptional vacuum integrity and low outgassing. Their high-performance design makes them perfect for semiconductor manufacturing, scientific research, and industrial vacuum processes.

Incorporating MDC’s patented C-Loc® and UniLoc™ locking mechanisms, the valves provide vibration-free operation by preventing direct contact between the valve body and locking components. This results in extended service life and reduces maintenance needs, which is crucial for critical vacuum environments. MDC gate valves are engineered with 50% fewer moving parts compared to traditional valves, minimizing particulate generation and mechanical wear. This makes them especially suitable for cleanroom settings and contamination-sensitive applications.

With welded AM-350 stainless steel bellows, these valves offer superior sealing performance and long cycle life, making them a reliable choice for consistent operation in high-performance vacuum systems. Available with Conflat 4-5/8" (117.48 mm) Flange, ISO NW80 (80 mm) Large-Flange™ LF, and ANSI ASA3 port connections, MDC’s 3 inch gate valves are perfect for both standard and custom vacuum system needs.

Industry Applications

MDC’s 3 inch (76.2 mm) gate valves are engineered for semiconductor processing, vacuum coating, mass spectrometry, plasma physics, and aerospace research. Their precision sealing and low-particle operation make them ideal for high-vacuum and ultra-clean environments across science and industry.