Tilted Disc Check Valve ??? ??? ???, ?????? ??? ?? ???????? ?? ???/???? ?????? ???? ??????? ???????. ??? ??????? ???? ???????, ????? ?????? ????????? ??? 40% ???? ??????? ???????? ?? ???????????????? ????? ?? ?????? ???? ???? ?????? ???? ???? ????? ??? ????. ?????? ??? ?? ?????????? ??? ???? ?????? ???? ???? ???? ?????? ??? ???, ??? ??????????????? ???? ?????? ????? ???? ?????????? ?????? ???????? ???? ????? ??.