Danfoss LENO MSV-S — manual partner / shut-off valve, OEM order code 003Z4112. Manual partner (shut-off) valve for the return of a hydronic branch or riser, used together with a LENO MSV-BD/MSV-O measuring-and-presetting balancing valve on the supply. It provides positive shut-off and a drain facility so a terminal or branch can be isolated and drained for service without disturbing the balanced setting of the partner valve. (MSV-S DN 20, External thread, partner valve.) Nominal size DN 20, Kvs 6 m³/h, PN 20, External Thread connection (G 1 A), DZR brass body, media temperature -20 °C to 120 °C. Net weight 0.471 Kilogram. Genuine Danfoss part; technical data quoted verbatim from store.danfoss.com (code 003Z4112). OEM P/N 003Z4112, EAN 5702420091839. Used in commercial refrigeration, provision-room cooling and reefer plant rooms across HFC, HFO and CO2 (R744) refrigerants.