The three-way valve HD-Q20 for fan coil Suggested retail price 1,435-hrv. Find a Dealer Description HD-Q is a 3-way ball ventel Power. Suitable for hot and cold water. Model HD-Q15 for connecting the pipes in diameter - DN15 (1/2 "); Model HD-Q20 for connecting the pipes in diameter - DN20 (3/4 ") - out of stock; Model HD-Q25 for connecting the pipes in diameter - DN25 (1") - out of stock; Features: Smooth opening / closing; The high flow rate (higher than in conventional valves); Suitable for all specifications of fan coil; Power off when the valve reaches the on / off status, which guarantees a long life of the drive; Actuator housing is resistant to moisture and ensures reliable operation of the engine;