safety valve (Standards: ISO2037, DIN, 3A, SMS, IDF) 1)Specification: 1/2"-6" 2)Material: SUS304,SUS316L Stainless Steel Safety Valve3)Working principle: Remote-controlled operation ... , beverage, cosmetic, chemical industry Order requirements 1. Quantity and Size.2 Product material3. Product description.4. Product photos ( if possible)5 ...