SPECIAL FEATURES:

• Non return valve with shutter ogive and contrast spring designed to take the advantages of Venturi effect.
• Low head losses and noiseless thanks to inner profile.
• From DN 40 to DN 250 PN 10-16-25 single block body version, from DN 250 and for big working pressure PN 40 and PN 64 reinforced version with body composed by two parts assembled by steel fasteners.
• Body high quality EPOXY powder coated.

MATERIALS:

Body:
Cast iron, GJL 250 UNI EN 1561 (former to DIN GG25) for PN 10/16 and DN 40-50 PN 25/40
Ductile iron, GJS 400-15 UNI EN 1563 (former to DIN GGG40) for other DN and PN

Ogive:
Brass CuZn40Pb2 for DN 40-100 PN 10/16/25/40/64
Cast iron, GJL 250 UNI EN 1561 (former to DIN GG25) for DN 125-400 PN 10/16
Ductile iron, GJS 400-15 UNI EN 1563 (former to DIN GGG40) for other DN and PN in single block execution
Aluminium for two parts body execution

Shutter:
Stainless steel 1.4301/ EN ISO10088 (correspondent to AISI304) for DN 40-150 PN 10/16
Cast iron, GJL 250 UNI EN 1561 (former to DIN GG25) for DN 200-600 PN 10/16
Ductile iron, GJS 400-15 UNI EN 1563 (former to DIN GGG40) for other DN and PN

Seat on body and counter seat on shutter:
Stainless steel 1.4301/ EN ISO10088 (correspondent to AISI304)

Stem:
Stainless steel 1.4301/ EN ISO10088 (correspondent to AISI304)

Spring:
Stainless steel 1.4301/ EN ISO10088 (correspondent to AISI304)

Guide bushes:
Brass CuZn40Pb2

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.