Full-bore bronze anti-blocking manual valve for marine piping systems, seawater intakes, hull penetrations, and internal water circuits. The straight 2-way design functions as a shut-off valve and ensures continuous fluid passage with flow in both directions.
The full bore reduces turbulence and unnecessary pressure loss. Depending on the selected variant, the capacity is up to 280,000 liters/hour at 1 bar. The valve has threaded connections according to EN 10226-1/BS 21 and can be mounted in any position.
The patented anti-blocking design protects the internal mechanism with a neoprene membrane and reduces the risk of corrosion, saltwater impact, deposits, and seizing after long periods of inactivity. The compact 90° operation without a protruding valve handle is suitable for installations with limited space. The handwheel has a clear OPEN/CLOSE indicator.
The valve body is manufactured from bronze CC491K, also referred to as CuSn5Zn5Pb5-C, and produced according to UNI EN 1982. The membrane and stem O-ring are made of neoprene, the friction washer is made of PTFE, and non-water-contacting metal parts are made of CW617 brass. The handwheel and position indicator are made of self-extinguishing ABS, which is resistant to impact, scratches, aging, and saltwater.
The valve is developed for applications including engine cooling, generators, cooling systems, watermakers, air conditioning, sanitary systems, and other marine fluid circuits. The modular construction allows for inspection and service of the internal mechanism without removing the entire valve body. Regular inspection and cleaning are recommended.
The series is patented under TO2013 A000759, RINA type-approved under DIP235223CS/003, and covered by Lloyd’s Register. It can be installed in small vessels with a hull length of up to 24 m when installed according to instructions and ISO 9093:2020. The valve is not approved for fire extinguishing systems or flammable media.
Key features
Threaded marine shut-off valve with full bore
Bronze body in quality CC491K
Neoprene-protected, anti-blocking mechanism
Compact 90° operation with open/closed indicator
Flow in both directions and mounting in any position
Capacity up to 280,000 liters/hour at 1 bar
RINA and Lloyd’s Register approved
Installation according to ISO 9093:2020
