TYPE NB / ND
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)
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)
Típusok
Title | Ductile Iron | Denomination | Stainless Steel |
|---|---|---|---|
Valve Body | ASTM A 395 | ASTM A 216 WCB | ASTM A 351 CF8M |
Seat | AISI 316 | AISI 316 | ASTM A 351 CF8M |
Valve Disc | ASTM A 351 CF8M | ASTM A 351 CF8M | ASTM A 351 CF8M |
Tab Washer | AISI 316 | AISI 316 | AISI 316 |
Radial Guide Assembly | AISI 316 | AISI 316 | AISI 316 |
Spring | AISI 316 | AISI 316 | AISI 316 |
Flow Diffuser | ASTM A 216 WCB | ASTM A 216 WCB | ASTM A 351 CF8M |
Central Tie Bolt | ASTM A 193 B8M | ASTM A 193 B8M | ASTM A 351 CF8M |
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