شفة الفولاذ المقاوم للصدأ سوينغ فحص صمام

A check valve, clack valve, non-return valve, reflux valve, retention valve or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction. Application scope: petroleum chemical industry, electric power, metallurgy, medicine, real estate, municipal engineering and other industries.