BOA-H globe valve

The BOA-H globe valve is a robust bellows-sealed valve for demanding applications in heating, boiler and process plants. It offers maximum tightness, a long service life and meets all relevant standards. Ideal for hot water, steam and thermal oil in energy and industrial processes.

Special features

• Bellows for emission-free sealing
• High temperature resistance up to 450 °C
• Suitable for energy and process plants
• Options for TA Luft and ATEX

Versions and options

• Pressure ratings: PN16, PN25, PN40 (cast steel up to DN200)
• Material versions: grey cast iron, ductile iron, cast steel
• Optional versions:
  • Crown cone (throttle cone for the highest
  • loads up to DN300)
  • Relief cone from DN200 for differential pressure limitation
  • PTFE-Dichtung am Kegel (max. 200 °C, max. DN200)
  • Limit switches (1 or 2 off) for position indication
  • Sealable cap against unauthorised operation
  • Oil-free and grease-free lubrication (BAM approved for oxygen applications)
  • Other flange machining or weld ends
  • Hochtemperaturfarbe (graualuminium)
  • Low-temperature bolts down to -30 °C (only with JS1025)

Areas of application

• Hot water, steam and thermal oil lines
• Applications requiring hermetic stem sealing
• Plants with a duty to verify leakage to the outside
• Nominal sizes up to DN 350

Advantages

• The bellows seals the stem to the outside maintenance-free
• Straight-through or angle pattern in straight-seat design
• Crown cone for the highest loads from DN 15 to DN 300
• Grey cast iron up to 300 °C, ductile iron up to 350 °C

Selection and installation

The bellows replaces the gland packing and makes the stem sealing maintenance-free – the reason why the BOA-H is chosen for steam and thermal oil. The cone form follows the nominal size: throttle cone up to DN 100, flat cone from DN 125.