This combination of disc springs and dual valve seal rings protects against expansion and contraction due to heating and cooling. This ensures dependable operation, even after years of service.

Same function as DPP-250: frequency control, adjustable stroke, touch heating, positive forming, capsule orientating, image and character register, air cushion heating-seal and chequered plates.

When Pipes, valves and water seal equipments is freezing, only hot water or steam heating can be use to thaw, and open fire is prohibited.