Vane Spring, Pfeiffer, UNO, DUO, Part# 4522 – vacstellar

Description

This vane spring (Part #4522) is a Pfeiffer replacement part. It plays a key role in your rotary vane vacuum pump by keeping the vanes pressed firmly against the cylinder wall. It is specifically designed for UNO and DUO models like the 004A, 008A, and 012A series. A small spring that is essential for maintaining your pump’s vacuum performance.