Glass-to-glass connection is made with compression type bead-to-bead and bead-to-plain end couplings.
Coupling’s outer shell, bolt and nut is made from 300 series stainless steel.
Bead-to-plain end coupling outer shell encapsulates compression liner to prevent cold flow and ensure leak-free joint. Inner seal ring is made of tetra-fluoroethylene.
Underground Glass Pipe excavation shall conform to national and local plumbing codes. Bottom of trench shall consist of a minimum 4” of rock-free sand or soil, compacted and graded to provide uniform full length support. Back-fill with rock-free sand and/or soil to 12” above pipe.
When the above conditions cannot be met, please consult us.