Product Description LDR 350 CO-212 Coupling, 2 1/2-Inch, Black. Hydrostatically tested. Rated at maximum 300 psi at 150Degree F. Do not use with drinking water. Protected from corrosion with varnish. LDR is the leader in high quality kitchen, bath and plumbing products for home improvement. From the Manufacturer LDR 350 CO-212 Coupling, 2 1/2-Inch, Black. Hydrostatically tested. Rated at maximum 300 psi at 150Degree F. Do not use with drinking water. Protected from corrosion with varnish. LDR is the leader in high quality kitchen, bath, and plumbing products for home improvement.