4" x 48" Sanitary, 304 Stainless Steel, Tri Clamp Spool, BHO Extractor Column Weld on Tees and Elbows This allows them to seal

This allows them to seal and conform to the mating surface providing a secure seal

Boiler is 28" tall

Made from plastic

This book is packed full of information and is very entertaining

4" x 48" Sanitary, 304 Stainless Steel, Tri Clamp Spool, BHO Extractor Column Weld on Tees and Elbows This allows them to seal4" x 48" Spool with 4" Tri Clamp Connection Spools, also known as sanitary spools, are pre fabricated lengths of stainless tubing with Tri Clamp fittings welded to both ends for customer convenience. These can be used in conjunction with other Tri Clamp fittings, Tri Clamp Clamps and Silicone Gaskets (all sold separately), allowing the user to easily manufacture sanitary pipelines without the need for costly on site welding and fabrication.