Danfoss AVQM DN 20 Flow Control with Integrated Control Valve, PN 25

The Danfoss AVQM DN 20 (code 003H6751) combines a flow limiter and a motorized control valve in one body for district heating substations, connected by a G 1 A external thread.

It is a self-acting flow limiter with an integrated control valve for district heating, used with Danfoss AMV(E) 10/20/30 or spring-return AMV(E) 13/23/33 actuators; it closes when the set maximum flow is exceeded and needs no impulse tube. Rated PN 25 with a 12 bar maximum differential pressure and water up to 150 degrees C (140 degrees C continuous), it has a fixed internal differential pressure of 0.2 bar, a logarithmic characteristic, a control range above 1:50 and leakage of 0.01% of kvs. The DN 20 size has a kvs of 4.0 m3/h, a flow setting range of 0.07 to 2.2 m3/h and a 5 mm lift.