Aeration » Airline Fittings & Valves »
These polystyrene flow indicators provide an immediate visual indication of water, air or gas flow. Minimum flow rate with air is .1 cfm mounted horizontally, .28 cfm mounted in a vertical position. Minimum flow rate with water to activate the ball is 50 ml/min mounted horizontally, 140 ml/min mounted in a vertical position. Max pressure 10 psi. Measures 39 mm x 57 mm, inlet/outlet barbs fit 1/4" - 3/8". I.D. tubing.