Manual High Vacuum Butterfly Valve Stainless Steel Carbon Steel GI Series Flanged

The GI series manual high vacuum butterfly valve is designed for turning on or cutting off the medium flow in vacuum and negative pressure pipelines. With a quick-opening manual handle, it guarantees excellent sealing and long-term reliability.

Technical Specifications:

• Valve Type: High Vacuum Butterfly Valve

• Model Series: GI Series

• Operation Method: Manual Lever with Locking Ball Handle

• Body Material: 304 Stainless Steel (or High-Grade Carbon Steel)

• Disc Material: 304 Stainless Steel

• Stem Material: Hardened Stainless Steel

• Sealing Element: High-Performance Viton / FKM O-ring

• Connection Interface: Flanged Connection

• Applicable Media: Air, Clean Inert Gases, Non-corrosive Fluids

• Pressure Environment: High Vacuum to Low Positive Pressure

• Vacuum Range: 10⁻⁵ Pa to 10⁵ Pa

• Leakage Test Rate: Less than 1.3 × 10⁻⁴ Pa·L/s

• Fluid Operating Temperature: Standard -20°C to +150°C

• Bakeable Temperature: Up to 150°C (Valve Open State)

• Opening Angle: 0 to 90 Degree Rotation

• Handle Lock Mechanism: Secure Multi-position Pin Indexing

• Flow Direction: Bi-directional Sealing Capability

• Surface Treatment: Fine Mirror Polished Inner and Outer Surface

• Service Life: Long Durability Cycle with Low Wear

• Maintenance Structure: Compact and Easily Replaceable Seals

• Application Industry: Vacuum Coating, Semiconductor, Aerospace Testing