Polycraftpuf Machine Private Limited offers Air-Driven Proportioner for Spraying Foam. Polycraftpuf Machine Private Limited is an ISO 9001:2000 accredited company. The company manufactures custom-engineered and standard polyurethane processing machinery, Metering Machines for the processing of urethane foam. The Air-Driven Proportioner for Spraying Foam is a low to medium output system has proven itself in many different applications. The Air-Driven Proportioner is an air-driven proportioner that offers a lot of flexibility in terms of field configurable power supply combined with low power requirements. Even though it is priced as an entry-level system, it will perform well in certain applications such as residential insulation or in-plant foam applicator.