??????????????????????? ????????????? ????? ??????????????????????????????? ??????????????????????????? (??????????????) ??????????????? ???? ?????? ?????????????? ?????? ???????????????????????? ??????????? ???????????????????????????????? ??????? ????????????? ??? ?? ??? ???????????????? ??????????? ??? ?????????????????????? ???????????? ???????

???????????????????????????????????? ???????????????????????????????????????????????????? ?????????????????????????? ?????? ??????????????????????????????? ?????????????????????????????????????????? ??????????????????????????????? ????????????????????????????????? ?????????????????????????????????????????????????? ???????????????????????????????? ?

Conventional resilient seated butterfly valves are built generally for fluid isolation as they've got lousy control qualities. The seat is definitely an elastic one piece that holds in place the valve entire body. This design and style may have its integrity compromised if the valve is held partly open up.Asahi/America develops and manufactures the

ดอกเจียรคาร์ไบด์ และ หินเจียรสีชมพูเครื่องตบดิน เครื่องโม่