TTI Desiccant Breathers, PowerBreather TT-3-CV. Equivalent to Air Sentry X-101, X-103, X-121, X-501, X-503, X-521, XR-101, XR-121, XR-501, XR-521, A-341, A-343, A-345, A-351; Des Case DC-VG-3, DC-EX-1; Beach BB-AG-3V, BB-EX-1; RMF 96 Series with valve, KL96RV; Hydac BDE 200.