Italy

bullet acquedottoNON RETURN VALVES BALL CHECK VALVE


MOD. 7320 PN 10    | DN  50 - 400 |
Flanged non return valve.

 valvole di non ritorno tipo palla 1

 

 

 

 

 

 

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

 

 

BALL CHECK VALVE table

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.


bullet acquedotto   bullet regolazione   bullet piping

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