Incoming oil line shut off ball valve, 3/8" flare is for installation of external fuel supply system for all Laser & Oil Miser Vented Heaters.
Models Compatible With: Laser 30, Laser 30 Black, Oil Miser 23, Laser 56, Laser 73, Laser 73AT, Laser 300, Laser 300-BL, Laser 530, Laser 560, Laser 730, Laser 730AT, OM-148, OM-122DW, OM-180, OM-128HH