Serie BOA-H
Bellows-type Globe Valve
Nominal diameter: DN15 – DN350
Nominal pressure: PN16 or PN25
Main applications:
▪ Hot-water heating systems
▪ Air-conditioning systems
▪ Boiler feed applications
▪ Boiler recirculation
▪ Chemical industry
▪ Process engineering
▪ Heat recovery systems
▪ Sugar industry
Features:
▪ Straight-way or angle pattern with horizontal seat
▪ Throttling plug up to DN 100
▪ On/off disc for DN 125 and above
▪ All nominal sizes with position indicator, locking device and travel stop
▪ Compact bonnet
▪ Maintenance-free bellows-type stem seal with back-up gland packing
▪ Non-rising handwheel
▪ Flanges to DIN EN 1092-2 Type 21
▪ Exterior coating: blue RAL 5002
▪ 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.
▪ Type-tested to the specifications of Germanischer Lloyd
| Materials | ||
| • Casing: | EN-GJL-250 or EN-GJS-400-18-LT | |
| • Valve disc: | 1.4021 + QT | |
| • Bellows: | 1.4541 | |
| Variants | ||
| ▪ V-port plug (seat-guided throttling plug for maximum requirements) for DN 15-300 ▪ Valve disc with PTFE ring (max. 200 °C, throttling plug for DN 15-100, on/off disc for DN 125-200) ▪ Lead-sealable cap (prevents unauthorised actuation) as assembly set ▪ Balanced plug design from DN 200 ▪ High-temperature resistant paint (grey aluminium) ▪ Either one or two limit switch(es) as assembly kit for globe valves of DN 15-150 made of JS1025 ▪ Oil and grease-free: lubricated exclusively by mineral oil free lubricants approved by the German Federal Office for Materials Testing (Bundesanstalt für Materialforschung und -prüfung, BAM) ▪ Other flange designs ▪ Low-temperature steel bolts for temperatures down to -30 °C (JS 1025 only) up to 0.75 x PN (max.) ▪ Certification to customer specification |
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