Dual Check with Atmospheric Vent Series Watts 9BD Size 1/4 in Connection MNPT Body Material Stainless Steel Temp Range 33 to 140 Degrees F Max Temp 140 Degrees F Max Pressure 150 psi Width 1 3/8 in Length 2 3/4 in Height 1 3/8 in Features Vented Triple Check Vacuum Breaker with NPTM End Connections Standards Designed to Meet the Requirements of New York City Health Code Section 81.47 NSF Standard 25 Compliance All Rubber Compounds Comply with FDA Food Additive Regulations