Brass Swing Check Valve - Metal Seat PN16 BSPP

This Brass Swing Check Valve Metal Seat PN16 BSPP gives you reliable backflow protection across a wide range of plumbing, heating, and industrial water applications. The brass alloy body resists corrosion, while the metal seat — brass or bronze — handles higher temperatures than elastomer-seated alternatives. Furthermore, BSPP threaded connections make it straightforward to fit into standard pipework. For the full range, see our Check Valves collection.

Available in ten sizes from 3/8" to 4", this valve suits domestic and commercial systems alike. The swing disc opens under forward flow and closes under reverse flow or back pressure. Consequently, it stops backflow without manual intervention.

Key Features of This Brass Swing Check Valve Metal Seat

• Body material: Brass alloy — consequently giving good corrosion resistance and long service life
• Seat material: Metal seat (brass or bronze) for high-temperature use
• Connection type: Screwed BSPP — also compatible with standard threaded pipework
• Pressure rating: PN16 up to 3", PN10 for 4"
• Temperature range: -10°C to +100°C
• Installation: Horizontal as standard
• Sizes available: 3/8", 1/2", 3/4", 1", 1¼", 1½", 2", 2½", 3", 4"
• SKUs: V225003 (3/8"), V225004 (1/2"), V225005 (3/4"), V225006 (1"), V225007 (1¼"), V225008 (1½"), V225009 (2"), V225010 (2½"), V225011 (3"), V225012 (4")

Applications for a Brass Swing Check Valve Metal Seat PN16 BSPP

This PN16 BSPP brass swing check valve suits potable water systems, heating circuits, and general industrial water services where backflow prevention is a system need. In addition, the metal seat makes it a better choice than rubber-seated valves in higher-temperature pipework. Moreover, the ten size options mean it fits a wide range of pipework from small domestic supply lines up to 4" commercial systems.

How the Swing Disc Works

The hinged disc sits in the flow path and swings open as forward flow pushes against it. When flow stops or reverses, gravity and back pressure close the disc against the metal seat. Therefore, backflow stops quickly without any external control or manual action. However, the valve needs horizontal installation as standard to work correctly.

Selection Advice

Select the size that matches your pipe bore and check the pressure rating against your system. The 4" size carries PN10 rather than PN16, so check this before specifying. As a result, for higher-pressure 4" systems you may need an alternative valve. See the full Check Valves range for other options.