Pressure Spring, Pfeiffer, Part# 490036 – vacstellar

Description

This is a pressure spring designed for Pfeiffer DUO and UNO series vacuum pumps. It is a critical component that pushes the vanes outward to maintain a tight seal, ensuring your pump achieves full vacuum pressure .This spring is used in many popular Pfeiffer models. It fits the DUO 1.6, DUO 2.5, DUO 2.5C, DUO 3, and UNO 6 pumps . It is also used in larger models like the DUO 6, DUO 6M, DUO 11, DUO 11M, and DUO 11MC   It is also part of the Level 2 repair kit for the DUO 2.5A model .