Cov twj tso kua mis ASCO feem ntau siv rau hauv cov tshuab sau plua plav. Cov khoom siv diaphragm siv los hloov lub diaphragm thaum nws raug puas tsuaj rau hauv cov twj tso kua mis no. Cov khoom siv no feem ntau muaj cov diaphragms, springs, thiab lwm yam khoom siv uas xav tau rau lub valve kom ua haujlwm tau zoo. Piv txwv li, peb tsim thiab muab cov khoom siv diaphragm 3.5 nti rau 3.5 nti asco twj tso kua mis. Daim duab qhia hauv qab no, thov saib cov khoom siv diaphragm ASCO 3 1/2 ".

Thaum yuav cov khoom siv diaphragm, nco ntsoov yuav cov khoom siv kom raug rau koj tus qauv pulse valve. Koj tuaj yeem tshawb xyuas nrog peb ua ntej yuav khoom.