A deed following the form entitled “Conservator’s Deed”, when duly executed, has the force and effect of conveying to the grantee the fee simple title of a person under voluntary or involuntary conservatorship or such conservator upon an order of a Probate Court authorizing and directing the conservator to sell at private sale the real estate owned by the person under voluntary or involuntary conservatorship, with covenants that (1) the conservator has full power and authority as such conservator to sell and convey the same to the grantee, and (2) the conservator and the conservator’s successors shall warrant and defend the granted premises against all claims and demands of any person or persons claiming by or under such conservator.