Danfoss manual shut-off handwheel, OEM order code 013G3300 — a manual operating knob that fits onto Danfoss RA radiator valve bodies (RA 2000 series) in place of a thermostatic sensor, allowing the valve to be opened, throttled or shut off by hand. Used during commissioning, for radiators that do not need automatic control, or as a temporary cap before the thermostatic head is fitted. Genuine Danfoss spare part. Technical data quoted verbatim from store.danfoss.com (code 013G3300). OEM P/N 013G3300, EAN 5702421035054. HS 8481.90.