Problem solver for high pressure applications.
Neles™ BW series metal seated triple eccentric disc valve is designed for both control and tight shut-off in severe service. Multiple seat options makes it well suited for the refining, power, petrochemical and chemical industries. The BW series provides extended operational life in high cycle, high temperature and abrasive applications.
Applications
- Chemical processes
- Refinery
- Petrochemical
- Off-shore
- Steel mills gas services
- Natural gas
- Power generation
- Fertilizers
Features
Neles™ BW Series Butterfly Valve for High Pressure Applications Features:
- Solid metal seat design, based on metal-to-metal contact.
- No resilient components needed for tightness
- Excellent control and on-off capabilities
- Design according to API 609 and ASME B16.34
- Low emissions according to ISO 15848
- Certified safety performance, capable to SIL 3 level according to IEC61508
- Mounting face according to ISO 5211
- Extremely wide temperature range up to +470 °C / +880 °F
- Fire safe certification according to API 607, 6th edition
- Wide rangeability in services with low pressure drop
- Two piece shaft design
- Industry best valve capacity
- In-built thermal and pressure compensation
- Heavy-duty stem and bearings design extends service life and is insensitive to thermal cycles and impurities
- Industry smallest operational torque resulting in cost efficient valve package
- On site interchangeable seat can be replaced without disassembling the disc and shaft. No adjustment or special tools needed
Benefits
Neles™ BW Series Butterfly Valve for High Pressure Applications Benefits:
- Low cost of ownership
- Minimized pressure loss and energy costs of the process
- Consistent performance even in the most difficult, changing process conditions
- Shortest possible maintenance hours
Specifications
Neles™ BW Series Butterfly Valve for High Pressure Applications Specifications:
| Body constructions: | Flanged short and long pattern |
| Lug and wafer design | |
| Butt weld ends | |
| Body pressure rating: | PN 63 - 400 / ASME Class 600 - 2500 |
| Seat design: | Single U-type metal seat |
| Size range: | DN 100 - 1600 / 4" - 64" |
| Temparature: | -200 to +470 °C / -320 to +880 °F |
Q & A
Neles™ BW Series Butterfly Valve for High Pressure Applications Q & A
+ What is the Series BW butterfly valve, and what makes it suited for high-pressure applications?
The BW is a double-eccentric, metal-seated butterfly valve designed for both control and tight shut-off in severe service. Its solid metal seat (metal-to-metal contact) design, heavy-duty stem and bearings, and in-built thermal and pressure compensation make it reliable under high pressure, high temperature, and abrasive conditions.
+ What industries and applications are typical for the BW series?
It’s used in refining, petrochemicals, chemical processes, power generation, natural gas, steel mill gas services, fertilizers, and offshore applications. It works well in services where you need both control and tight shut-off with high durability.
+ What kind of tightness / seat design does BW use, and what leakage performance can be expected?
The BW uses a single U-type metal seat (metal-to-metal contact). The design ensures tight shut-off without needing resilient (soft) seals for many conditions. It is built to perform well under high and variable process conditions.
+ How does the BW valve manage process changes, thermal cycling, and abrasive media?
It offers in-built thermal and pressure compensation, heavy-duty stem and bearings that are less sensitive to impurities, and a design that tolerates thermal cycles and abrasive flows. The metal seat is more resistant to wear in such conditions.
+ What is the operational torque like, and how does that influence actuator sizing / operational cost?
The BW series is designed to have industry smallest operational torque in its class, which helps reduce actuator size and energy cost. Lower torque also makes cycling easier and can reduce wear/costs over time.
Downloads
Download Neles™ BW Series Butterfly Valve Datasheet
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