Manufactured with UV shatterproof and stabilised polycarbonate window, the R Series Transformer Breather has a transparent, clear body that allows for easy monitoring of the desiccant condition easily. With a two-way, low-pressure valve fitted in the base of the breather, it facilitates and ensures that air only can enter the breather when there is a negative pressure differential within the equipment. The R Series Transformer Breathers is also mounted with a female pipe thread connection at the top, allowing the filling and emptying of desiccant inside the breather with minimum effort. To cater to the different application requirements, the R Series comes in various sizes, R, R1, and R2. The R3 Breather consists of two R1 Breathers fully saturating one before the other to provide handles with more time allowance as they would only need to replace the desiccants when both breathers are fully saturated.