Noreva GmbH

Ring Disc - TYPE NB & ND

The NB is the Noreva standard long face to face for 12″ and larger, providing optimum pressure recovery performance and, hence minimum pressure loss.  It is also available with API 6D face-to-face dimensions (ND).

Materials according to customers request, such as Low Temperature Carbon Steel, Nickel-Aluminium-Bronze, Duplex, Superduplex, 6Mo, etc.

Features:

• Non-slam Closure
• Friction-free Valve Disc Guiding
• Choice of Face-to-Face Length
• 12" - 88" (DN 300 - DN 2200)
• Very Low Pressure Loss
• Maintenance Free
• Metal Sealing
• Up to PN 400 (ANSI 2500)