Conbraco 4A-205-A2F Preventer 30067439-890 The 400147-221-D is the modern

The 400147-221-D is the modern technical equivalent with updated insulation materials

utilizing upgraded contact materials for better arc suppression while maintaining identical ratings

We recommend inspecting your existing 2-foot silicone rubber tubing for cracks or moisture during installation to ensure a proper pneumatic seal

Using a motor with a different RPM rating can disrupt the system's static pressure and lead to coil freezing or reduced heating efficiency

Conbraco 4A-205-A2F Preventer 30067439-890 The 400147-221-D is the modernThe Conbraco 4A 205 A2F is a professional grade 1 inch reduced pressure principle backflow preventer (RP4A) engineered for high hazard domestic and commercial potable water applications. This lead free bronze body backflow assembly is the direct performance successor to the 4A 205 T2F, offering enhanced field serviceability and lower head loss across all flow rates. Built for 175 PSI maximum working pressure, the unit features top access modular check