Delvac Pumps Pvt Ltd supplies Hand-held Ampoule Sealing Torch. Delvac Pumps Pvt Ltd manufactures Freeze Dryers and accessories for quick and efficient sample preparation. The Hand-held Ampoule Sealing Torch is useful for flame sealing freeze dried ampoules under vacuum in combination with secondary drying manifold and does not require conventional gas cylinders or long hoses.