Materials
- Body and bonnet: ductile iron GJS 500-7.
- Seat, stem, spring and plug: stainless steel AISI 304 (AISI 316 on request).
- Diaphragm: EPDM with nylon fabric reinforcement.
- Bush: bronze C61900.
- O-ring: NBR; bolts and washers: stainless steel A2/A4.