Consarc Corp., a manufacturer of high-performance vacuum furnaces in Rancocas, N.J., purchased PV/T Inc., Mt. Laurel, N.J., manufacturer of vacuum melting and heating furnaces. PV/T will be a wholly owned subsidiary of Consarc. The PV/T product line extends Consarc's range of vacuum and controlled atmosphere furnaces. Future plans include consolidation of operations. The product line of PV/T Inc., which has been in the specialty vacuum furnace business since 1965, includes vacuum induction melting, vacuum heat-treating and vacuum heat processing furnaces.