A ___ is used to allow air in and out of a reservoir as hydr… Post author By Anonymous Post date January 17, 2025 Related Posts:A ___ is used to allow air in and out of a reservoir…A ___ is used to allow air in and out of a reservoir…A 42- year-old patient has bilateral hydronephrosis… ← The nurse is caring for a client who has a diagnosis of a pe… → The nurse is teaching a client about a new prescription for…