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The VIEGA 19758 is a galvanized steel bolt set designed for use with two-piece adapter flanges in pipe joining applications. Sold as a set of 4 bolts, this hardware provides the mechanical fastening needed to secure adapter flange assemblies across three common pipe sizes: 2 inches, 2-1/2 inches, and 3 inches. The galvanized steel construction resists corrosion in wet and humid environments typical of plumbing and mechanical installations. Licensed plumbers and pipefitters install this hardware as part of flange connections in both new construction and retrofit work.
This bolt set is used in residential and commercial plumbing systems where two-piece adapter flanges are specified. It fits flange assemblies sized at 2 inches, 2-1/2 inches, and 3 inches, making it a versatile fastener kit for shops and service vans stocking multiple flange sizes. The set is appropriate for any installation requiring proper mechanical clamping of a split or two-piece adapter flange configuration.
Designed for use with VIEGA two-piece adapter flanges in 2 inch, 2-1/2 inch, and 3 inch flange sizes.
Installation is performed by a licensed plumber or pipefitter. Shut off the water supply and depressurize the line before disassembling or servicing any flange connection. Follow applicable IPC guidelines for flange joint assembly and bolt tightening sequence. Inspect flange faces for damage or debris before installing the bolt set to ensure a proper seal.
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