Blogs » Construction Reunited
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by on October 12, 2021
Fittings for cast iron pipe flanges are classified into two types: hubless and bell-and-spigot. Hubless designs rely on elastomeric couplers that are secured to the outer diameters of the pipe or fitting by clamps, typically a stainless steel band clamp that compresses the elastomeric material and forms a seal. These hubless or no-hub designs are sometimes referred to as rubber pipe couplings or rubber plumbing couplings, and they are particularly popular for transitioning from one material to a...
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