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Ships within 48 hours · Estimated delivery Sep 8 - Sep 13
Our below grade waterproofing membrane is made in the USA from High-density polyethylene (HDPE)
Integral double-wall trap in the top drain prevents sewer gas escape and supports building safety
while the flashing clamp and built-in gravel stop help create a watertight seal
Heavy-duty cast iron body ensures long service life
Watts N30-005030 - Part of the N30 Series SITEDRAIN Our below grade waterproofing membraneThis 1 2 inch pressure relief valve for wells is used to protect against excessive pressures in well systems. It is not diaphragm actuated, and is used for pressure relief service only. It consists of a bronze body construction with NPT threaded male inlet and NPT threaded female (drain) outlet connections, and stainless steel spring. Its pressure range is 5 to 25 psi (0. 34 to 1. 72 bar) and a standard pressure setting of 30 to 45 psi (2. 06 to 3. 1