Serie NORI
Bellows-type Globe Valve
Nominal diameter: DN 10 – DN 200
Nominal pressure: PN 25/40
Main applications:
▪ Process engineering
▪ Chemical industry
▪ Petrochemical industry
▪ Sugar industry
▪ Heat recovery systems
▪ Boiler feed applications
▪ Nuclear power stations
Features:
▪ Tapered valve disc, replaceable
▪ Two-piece stem
▪ Back seat
▪ Back-up gland packing with follower
▪ Position indicator
▪ Outside confined bonnet gasket
▪ Materials free from non-ferrous metals
▪ EC type-tested (Module B), component mark TÜ.A.-209
▪ Exterior coating: blue RAL 5002
▪ The valves meet the requirements specified in TA-Luft (German Technical Guidelines on Air Quality Control, VDI 2440).
▪ The valves satisfy the safety requirements of Annex I of the European Pressure Equipment Directive 97/23/EC (PED) for fluids in Groups 1 and 2.
▪ The valves do not have a potential internal source of ignition and can be used in potentially explosive atmospheres, Group II, category 2 (zones 1+21) and category 3 (zones 2+22) to ATEX 94/9/EC.
| Materials | ||
| • Casing: | P250 GH (1.0460) or GP 240 GH+N (1.0619+N) | |
| • Valve disc: | X 39 CrMo 17-1 (1.4122) / P 250GH (1.0460) | |
| • Bellows: | X 6 CrNiMoTi 17-12-2 (1.4571) | |
| Variants | ||
| ▪ Throttling plug ▪ Valve disc with GYLON gasket (240 ℃ max.) ▪ Balanced plug from DN 125 ▪ Locking device ▪ Travel stop ▪ Studs and nuts of A4-70 (low-temperature steel) ▪ Oil and grease-free (wetted parts) ▪ Stellited seat/disc interface ▪ Seal-welded body/bonnet joint ▪ Leakage detection hole ▪ PTFE-encapsulated gasket (300 ℃ max.) ▪ Serrated gasket (PTFE or graphite coated) ▪ PTFE gland packing (300 ℃ max.) ▪ Dried for chlorine applications ▪ Upper section with single-piece non-rotating stem for mounting electric and pneumatic actuators (DIN ISO 5210) ▪ Electric actuators ▪ Pneumatic actuators ▪ Position switch(es) ▪ Other flange designs ▪ Other butt weld end versions ▪ Other socket weld end versions ▪ Inspections to technical codes such as TRD/TRB/AD2000 – German Steam Boiler / Pressure Vessel Regulations – or to customer specification |
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