... 3.Low noise, Anti-siphon; 4.Filter for purit solar water heater plastic fill valve S110 ≡Advantage ≡1, Membrane design, ... 3, float in one-piece, easy to adjust the water level, close instantaneously;4, inside drain guard;5. ... Pressure design, momentary shut off;6. Easy water level adjustment and hold on;7. Low noise, Anti ... .Update Date:2011-3-8 8:06:03 solar water heater plastic fill valve S110