Anvil AOSY3-FF-080 Osy Flanged Gate Valve 8 Inches

Product Description

The ANVIL AOSY3-FF-080 is an outside screw and yoke (OSY) flanged gate valve engineered for fire protection and industrial water supply systems. The rising stem and yoke design gives visual confirmation of the open or closed position without needing to check downstream pressure, which is a critical feature in life-safety applications. Rated to 300 psi, this 8-inch valve is sized for large-diameter mains where reliable shutoff is essential. It is installed by licensed fire protection contractors, mechanical contractors, and licensed plumbers working on fire suppression headers, standpipe systems, and similar high-pressure water distribution lines.

This valve is intended for use as a main control or sectional shutoff valve on wet-pipe and dry-pipe fire sprinkler systems, standpipe risers, and industrial water mains. The flanged end connections allow direct bolt-up to standard pipe flanges, making it suitable for both new construction and retrofit installations where a full-bore, low-restriction gate valve is required. ULC and FM listings confirm it meets fire protection authority standards for use in listed fire suppression assemblies in the United States and Canada.

Key Features

• Outside screw and yoke (OSY) rising stem provides immediate visual open-or-closed status indication
• 300 psi pressure rating suitable for high-demand fire protection and industrial water systems
• 8-inch flanged end connections for direct bolt-up to standard pipe flanges
• ULC listed and FM approved for use in certified fire suppression system assemblies
• Full-bore gate design minimizes flow restriction in large-diameter mains

Compatibility

Designed as an OEM-style flanged OSY gate valve for 8-inch fire protection mains and industrial water supply headers requiring ULC and FM listed components.

Installation Notes

Installation should be performed by a licensed fire protection or mechanical contractor in accordance with NFPA 13, NFPA 14, and applicable local codes. Depressurize and isolate the system section before installation, and verify flange bolt pattern and gasket compatibility with the mating pipe flanges prior to assembly. Supervisory switches are commonly installed on OSY valves in fire suppression systems to provide tamper monitoring through the fire alarm panel. Do not use this valve to throttle flow; gate valves are designed for full-open or full-closed service only.

Technical Specifications

• Valve Type: Outside Screw and Yoke (OSY) Gate Valve
• End Connection: Flanged
• Nominal Size: 8 inches
• Pressure Rating: 300 psi
• Listings and Approvals: ULC Listed, FM Approved

Standard Information

• Brand: ANVIL
• Manufacturer Part Number: AOSY3-FF-080