Description

An Adaptor Full face threaded BSP 1,1/4″ better known as full-face gasket suitable for use with PN16 threaded BSP flanges. This points to a gasket designed to cover the entire face of a flat-faced flange. This also has a PN16 pressure rating. Also uses British Standard Pipe (BSP) threaded connections.

• PN16: This is the nominal pressure rating, meaning the fitting can withstand up to 16 bar (232 psi) of pressure at a temperature of 20°C (68°F).
• Full Face: This describes the type of gasket used with the flange. A full-face gasket covers the entire surface of the flange. From its outer edge to its inner hole, with pre-cut holes for the bolts. It provides a more complete seal, especially for systems using flat-faced flanges.
• PN 10-16: This indicates that the flange’s bolt pattern is designed to be compatible with both PN10 and PN16 flanges. For smaller sizes (up to DN150), PN10 and PN16 flanges often have identical dimensions, making them interchangeable.
• Threaded BSP: This specifies that the inner connection of the fitting has a British Standard Pipe (BSP) thread for screwing onto a pipe. BSP thread has a 55° V-thread with rounded roots and crests

Functional description

• Assembly: A pipe is screwed into the BSP thread of the fitting, and the flange is then bolted to another flange using a full-face gasket to create a leak-tight seal.
• Compatibility: Its ability to match PN10 or PN16 bolt patterns offers versatility for different pressure requirements, especially in less critical, moderate-pressure systems.
• Material: Fittings are often made of uPVC, a material known for its chemical resistance and long service life. Many are WRAS-approved for use with potable drinking water. 

Key specifications and limitations

• Pressure and temperature rating: The PN16 pressure rating is dependent on temperature. The fitting’s pressure capacity is reduced at higher temperatures and it should not be used where temperatures exceed 60°C (140°F).
• Leakage risk: Threaded connections are not as strong as welded joints and are more susceptible to leaks over time, especially in systems with vibration or high temperatures.
• Application: Due to the potential for leakage, these fittings are generally not recommended for high-pressure, high-temperature, or hazardous media applications. They are best suited for lower-pressure fluid systems like those in water distribution networks or drainage.
• Threaded vs. flanged strength: While the threaded connection is less robust, the bolted flange provides a very secure joint for the main pipeline connection.