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| Metso Neles BW Series |
DOWNLOAD THE BW SERIES SPECIFICATION SHEET HERE
The BW provides extended operational life in control, tight shut-off and critical applications such as high cycle, high temperature, cryogenic, oxygen and abrasive applications, etc. Rating from ASME 900 to 2500 makes the BW a sound control or shut-off valve in severe service applications.
Excellent on-off capabilities
- Uniquely functioning full metal seat design assures tightness over long time periods.
- Contact between disc and seat is mechanically induced and does not rely on assistance from differential pressure.
- Long term tightness is maintained even in high cycle rate services. Tightness in not compromised by large thermal cycling either.
- Low friction and excellent wear resistance.
- Lowered operational torque reduces actuator size
- Heavy-duty stem and ingenious bearings design extends service life and is insensitive to thermal cycles and impurities.
- Good controllability via smoothly rising installed characteristic curve at both very small openings and nearly full Cv positions. Series BW provides very wide rangeability in fairly low pressure drop services.
- Good dynamic stability in both flow directions.
- Available with a variety of actuators, positioners and accessories for single source responsibility. Mounting face according to ISO 5211.
- Abrasion resistant construction
- Solid, sturdy all metal seat design is based on metal-to- metal contact. No resilient parts are needed for seating.
Low emissions
- The live loaded gland packing is located right after the outer bearing maximizing the tightness. The emissions are well below the international standards.
- Furthermore, there are no resilient parts exposed to the medium.
- Differential pressure/temperature ratings in accordance with ASME B16.34.
- Extremely wide temperature range up to +1150°C / +2100 °F.
- Low cost of ownership
- Extremely high cycle life minimizes the need for maintenance, and increases Mean Time Between Failure (MTBF) value.
- Interchangeable seat can be replaced without disassembling the disc and shaft. Seat replacement does not require any adjustment or special tools.
- Certified emission and fire safe performance
- Emission certified according to industry standard, ISO 15848-1 class B in shut-off applications.
- Fire safe certification according to API 607, 6th edition
Certified safety performance
- SIL certification to meet IEC61508 requirements
- Capable to SIL 3 level
Applications
The BW series butterfly valve is suitable for the following industries and applications.
- Chemical Process: Tail gas, waste water, Flue gas, styrene, acrylic acid
- Refinery: Flammable media, process, gas
- Off-shore: Flammable media, process, gas
- Steel: Gas and crude gas
- Gas: Natural gas, sour gas
- Nuclear power: Steam, gas, water
- Conventional power: Steam, gas, water
For more information about the Neles BW Series, contact Mead O'Brien at (800) 892-2769 or visit their web site at https://meadobrien.com.
