Danfoss AVD pressure-reduction controller, PN 25, DN 20, kVS 4 m³/h, setting 3 – 12 bar (003H6987)

Danfoss AVD (003H6987) — self-acting pressure-reduction controller, PN 25, DN 20, for district heating and central-heating circuits. The AVD is a self-acting pressure-reduction controller that requires no auxiliary energy: it holds a constant reduced downstream pressure, closing on rising outlet pressure, using a control valve and a spring-loaded actuator diaphragm. kVS 4 m³/h; adjustable pressure setting range 3 – 12 bar. OEM P/N 003H6987, EAN 5710104096841. Technical data quoted verbatim from store.danfoss.com (code 003H6987).