Mechanical · M-356BP

HDPE Pipe thru Exterior Wall Into Building

Materials

Steel Stainless Steel

Elements

Walls Insulation Drainage Connections / Plates

Connections

Bolted Connection

About this detail

An exterior site distribution high-density polyethylene pipe passes through an exterior wall penetration fitted with an integral sleeve and waterstop, sealed with a hydrophobic water stop or subgrade sealant. The high-density polyethylene pipe features a high-density polyethylene jacket and polyurethane insulation on the exterior side. Inside the building, the high-density polyethylene pipe connects to a steel pipe via a high-density polyethylene flange adapter, high-density polyethylene backup ring, Garlock Multi-Swell Style 3760 gasket, slip-on steel flange matching the bolt pattern, and stainless steel hardware. The interior steel pipe is supported by an exterior support steel pipe to maintain a strain-free connection between the steel and high-density polyethylene materials. A two-inch vent valve with a cap and a two-inch drain valve with a cap are included where a butterfly valve is provided.

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