3/8" x 3/8", MPT x MPT, 150 PSI, Lead-Free, 316 Stainless Steel, Santoprene Disc, Dual Check, Atmospheric Vent, Y-Pattern, Backflow Preventer with Strainer

• Type: Dual Check, Atmospheric Vent, Y-Pattern
• Nominal Size: 3/8 Inch x 3/8 Inch
• End Connection: Male Threaded x Male Threaded
• End to End Distance: 4-1/2 Inch
• Body Material: 316 Stainless Steel
• Disc/Poppet Material: Santoprene Disc
• Seat Material: Noryl
• Temperature Rating: 54 to 130 Deg F
• Pressure Rating: 150 PSI
• Inclusions/Features: Strainer
• Application: Post Mix Carbonated Beverage Equipment, Tea and Coffee Dispensing Equipment
• Applicable Standard: ASSE 1032, NSF/ANSI 18, CSA B64.3
• Additional Information: Lead-Free

Series SD3 is a dual check with atmospheric port designed for the protection of the water supply from carbon dioxide gas and carbonated water. These substances can flow from post-mix beverage systems and are very acidic. If the acidic water comes in contact with copper tubing or copper pipe, it will cause the leaching of copper salts into the water supply. The dissolved copper if ingested can cause nausea, abdominal pain, and in some cases vomiting. The SD3 prevents the reverse flow of potentially contaminated water into the potable water supply due to back pressure backflow and is used for continuous or intermittent pressure conditions. The SD3 atmospheric vent provides a visual indication of failure in the event that the downstream check fails and system backpressure exceeds the supply pressure.

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