SPECIAL FEATURES:

• Non return valve to be installed in pumping stations for clean or sewage water and viscous fluids.
• Full bore type, self cleaning ball. Low pressure drop and noiseless.
• Body and cover high quality epoxy powder coated (fusion bonded), minimum thickness 250 micron.
• Working temperature: 10° C - 70°C.
• Minimum differential pressure of closing for a perfect sealing: from 0,3 to 0,5 bar according to DN.
• Removable bonnet for cleaning or changing the ball without disassembly out of the pipeline.
• Horizontal and vertical installation in the pipeline.

MATERIALS:

Body:
Cast iron, EN GJL 250 / EN 1561 (former to DIN GG25)

Cover:
Ductile iron, EN GJL 250 / EN 1561 (former to DIN GG25)

Ball:
DN 40-250: aluminium NBR coated
DN 300-400: steel NBR coated

Gasket:
NBR rubber

Fasteners:
Stainless steel A2-70 / EN ISO 3506

All metal, rubber, and coatings used have been designed for contact with water for human consumption, pursuant to the terms of Italian Health Ministry decree n° 174, dated 6/4/2004.