4499 Butterfly check valve with counterweight

Eccentric disc made of ductile cast iron EN-GSJ 400-15. Slide bearings made of bronze and PTFE. Body sealing: metal ring + EPDM NBR or FKM – interchangeable. Additional shaft sealing made of NBR, EPDM or FKM o-rings. Epoxy coating minimum 250 microns or polyvinyl coating minimum 100 microns according to EN ISO 12944-5.