BV Proinval swing check valves BVP-71C avoid back flow when there is not sufficient pressure. They are designed to work with clear water or sewage.

GROUP: CHECK 
DESCRIPTION: SWING CHECK VALVE 
DESIGN PRESSURE (PN): 10-16 
CLOSE: RESILIENT SEAT 
BODY: GJS400 (GGG40) 
COVER: GJS400 (GGG40) 
MATERIAL OBTURATOR: GJS400 (GGG40) 
SEAT: EPDM 
CONNEXION/ENDS: FLANGES 
CONNEXION (P/N): DIN NP16 / DIN NP10 
COATING: EPOXI 200 MICRONS 
DIAMETER: DN 50 - DN 400