Danfoss SBFV are high performance steel butterfly valves that together with Danfoss JIP™ ball valves complete the family of shut off valves designed especially for district heating and district cooling systems. Danfoss SBFV are triple offset butterfly valves with unique lamelar seat design that ensures reliable operation and tightness even at high and low temperatures. They are primarily designed as shut-off valves but can be as well used for simple control purposes. Packing box has been designed on the same principle as on JIP™ ball valves where carbon reinforced PTFE sealing is used that does not deteriorate over years and can be tightened while in the pipeline thus ensuring external tightness for lifetime.