Watts 009M2-QT-S-FS 1 1/4 - Part of the 009 Series Z100F-6NH The stainless steel option is

The stainless steel option is made of T-304 / 18-8 stainless steel with an estimated lifespan of 25+ years

and refrigeration units

Available in 40 mil

Flashing clamp with integral gravel stop for secure membrane connection

one RV lower stem O-ring

Watts 009M2-QT-S-FS 1 1/4 - Part of the 009 Series Z100F-6NH The stainless steel option isThis 1 1 4 inch reduced pressure zone assembly backflow preventer helps prevent the flow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. Its compact modular design facilitates easy maintenance with a single access cover for in line repairs. It is ideal for protection in continuous pressure piping applications and at cross