... for purit solar water heater plastic fill valve S110 ≡Advantage ≡1, Membrane design, good performance;2, clip in special design to ... the height of fill valve fixed;3, float in one-piece, easy to adjust the water level, close instantaneously; ... 5. Pressure design, momentary shut off;6. Easy water level adjustment and hold on;7. Low noise, ... :2011-3-8 8:06:03 solar water heater plastic fill valve S110