Air valve
1. Standard: EN1074-4, BS , ANSI
2. Type: Single orifice type, double orifice type, triple function
3. Material: Ductile iron GGG40/50 /Cast Iron GG25/Carbon Steel, float ball: SS304, ABS or NBR
4. Coating: Internal and external with fusion bonded epoxy coating. min250μm or liquid epoxy painting
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