Abstract: A method for coating a valve assembly including: providing a valve assembly including a metal susceptible to corrosion; cleaning an outside surface of the valve assembly; preparing a zinc primer by adding an anti-microbial agent to provide an anti-microbial zinc primer; applying a first layer of the anti-microbial zinc primer to the outside surface of the valve assembly; and applying a second layer over the first layer, the second layer including a topcoat for a two-layer coat; and curing the two-layer coat by heating the valve assembly. A valve assembly with protection layers including anticorrosion and antimicrobial protection is also described.

Abstract: A valve assembly having a bolt with a through hole for a security wire includes at least one valve of the valve assembly mechanically coupled to a pipe or to a section of another component of the valve assembly by a coupling or by a pair of mating flanges. At least one hollow bolt is bolted through a closing bolt hole of the coupling or a joining bolt hole of the pair of mating flanges. The at least one hollow bolt accepts a safety wire run completely through the hollow bolt in a longitudinal direction of the hollow bolt and extending completely through the closing bolt hole of the coupling or the joining bolt hole of the pair of mating flanges.

Abstract: A valve assembly having a bolt with a through hole for a security wire includes at least one valve of the valve assembly mechanically coupled to a pipe or to a section of another component of the valve assembly by a coupling or by a pair of mating flanges. At least one hollow bolt is bolted through a closing bolt hole of the coupling or a joining bolt hole of the pair of mating flanges. The at least one hollow bolt accepts a safety wire run completely through the hollow bolt in a longitudinal direction of the hollow bolt and extending completely through the closing bolt hole of the coupling or the joining bolt hole of the pair of mating flanges.

Abstract: An in-line expansion tank includes a sleeve defining a volume, a pipe positioned within the sleeve, and an annular flexible bladder disposed within the volume between the sleeve and the pipe. The pipe defines a fluid flow channel, an inlet at an upstream region of the pipe in fluid communication with the fluid flow channel, and an outlet at a downstream region of the pipe in fluid communication with the fluid flow channel. The bladder and the sleeve define an outer radial chamber therebetween. The chamber is pressurized during normal use and the bladder is configured to contact the pipe during operation at normal water pressure to minimize dead space between the bladder and the pipe. The tank includes a valve for pressurizing the chamber.