KVN DN 15-50 Flange Design Piston Valve

KVN DN 15-50 Flange Design – Key Features

• Straight-through Piston Valves
• Sealing via two elastic KX-GT valve rings
• Excellent control characteristics
• Fire Safe
• Special regulating design available (KVRKN)
• Temperature-10 0C to +400 0C (see P-T diagram)

Material Used

• Grey cast iron EN-GJL-250/5.1301 (Material code III)
• Nodular cast iron JS 1049/5.3101 (Material code VI)*
• Cast Steel 1.0619 (Material code VIII)
• Stainless steel 1.4581 (Material code Xc)

Dimensions

EN 558-1, GR. 1

Connections

Flange in accordance with EN 1092-2 (Mat. Code III, VI)

Flange in accordance with EN 1092-1 (Mat. Code VIII, Xc)

Acceptance Testing

• Seat leak tightness: EN 12266-1 P12, leakage rate A
• Tightness to atmosphere: EN 12266-1 P11
• Cast Steel 1.0619 (Material code VIII)
• Strength: En 12266-1 P10