For ideal water flow, fit your pipes with reducer tee from LASCO. This reducer tee has a maximum temperature of 140 degrees F. This fitting falls into the tees sub-category and into fittings schedule 40. It fits a pipe size of 2-1/2" x 2-1/2" x 1". It is ASTM. It comes in white. Standards include: NSF 61, NSF 14.