What Are The Materials Used To Manufacture Sanitary Diaphragm Valves?

Materials for making tri clamp diaphragm valve, and what aspects should be tested if the 3 way sanitary diaphragm valve are qualified. So what materials are needed to make hygienic diaphragm valve?

Materials for making tank bottom diaphragm valve:
Diaphragm: silicone rubber
Valve body: SUS316L
Valve body: SUS316L iron-free alloy
Diaphragm: PTFE composite diaphragm, PTFE double-layer diaphragm, high-strength EPDM, fluororubber, high-strength white silicone.

Tests for making sanitary diaphragm valves:
Nominal pressure: PN (MPa)
Valve body: PN×1.5
Seal: PN×1.1
Lining layer: spark detection
Testing and inspection according to GB/T 13927 standard
Sanitary Diaphragm Valve Suitable for the transportation of various concentrations of acids, alkalis, salts, and organic materials.