La San Marco Retention Valve trending-cafe-supplies/on-the-go Works with: Microswitch S15000041 (sold

Works with: Microswitch S15000041 (sold separately)

Flange size: 95 x 57 mm

If your boiler actually uses the newer pattern

before installing

Diameter: 12 mm

La San Marco Retention Valve trending-cafe-supplies/on-the-go Works with: Microswitch S15000041 (soldLa San Marco Retention Valve (Non Return Valve) Also called a non return valve, this spring loaded check valve is designed to hold closed until pressure reaches roughly 12+ bar, then expand and open, keeping water from backing up through the line when the pump isn't running. SPECIFICATIONS Fitting: 6 mm barb Opens at: 12+ bar COMPATIBILITY Fits: La San Marco 85 S and E, 85 Leva, 95 and 105 models INSTALLATION Technician level plumbing job. PRO TIPS If