Butterfly Valve Distributors

BM Engineering Supplies provides a wide range of high-performance butterfly valves, including triple offset butterfly valves, which are a lightweight and more affordable alternative to many other types of valve. A butterfly valve delivers easier installations and significant cost-savings compared to a ball valve, especially at larger sizes. We can also supply actuated butterfly valves on a next-day basis for all your automation requirements. Our actuated packages include AtEx Exi and Exd, AS-i and 4-20mA control options and can be assembled, tested and dispatched on a same-day basis.

Purchase Butterfly Valves from BM Engineering Supplies today. Contact us on 0141 762 0657 or sales@bmengineering.co.uk to place your order.

High-performance butterfly valve manufacturers

BM Engineering Supplies has partnered with the most respected high-performance butterfly valve manufacturers in the industry. This enables us to supply an extensive selection of reliable and durable high-performance butterfly valve products, including a wide range of triple offset butterfly valves.

Zwick Armaturen

Zwick Armaturen have 30 years’ experience in designing and manufacturing valves of the highest standard and are trusted triple offset butterfly valve manufacturers. Their triple eccentric butterfly valves are used across a wide variety of industries, including oil and gas, chemical, petrochemical, energy, offshore and steel – wherever critical applications require reliable functionality and 100 per cent zero-leakage.

Zwick’s butterfly valve range includes:

  • TRI-CON Triple offset butterfly valves (Wafer)
  • TRI-CON Triple offset butterfly valves (Lugged)
  • TRI-CON Triple offset butterfly valves (Double block & bleed)
Zwick

SOMAS Instrument AB

Based in Genoa, Italy, Unitech SRL are a leading supplier of high quality manufactured valves and products for the process industry. Unitech’s products are produced to 97/23/EC ‘PED’ and 94/9/EC ‘ATEX’ in compliance with ISO 9001:2008 standards. Our long standing partnership means that we can consistently supply quality products from a partner you can trust.

Unitech’s range includes:

  • Steel body valves
  • Ductile iron body valves
  • Wafer pattern valves
  • Lugged pattern valves
  • Split body valves
  • Damper valves
  • Eccentric stem valves
  • ATEX valves
SOMAS butterfly valves

Unitech

Based in Genoa, Italy, Unitech SRL are a leading supplier of high-quality wafer, lugged and split-body PTFE lined butterfly valves for the process industry. Unitech’s butterfly valve products are produced to 97/23/EC ‘PED’ and 94/9/EC ‘ATEX’ in compliance with ISO 9001:2008 standards. Our long-standing partnership means that we can consistently supply high-quality butterfly valves from a partner you can trust.

Unitech’s range includes:

  • Steel body valves
  • Ductile iron body valves
  • Wafer pattern valves
  • Lugged pattern valves
  • Split body valves
  • Damper valves
  • Eccentric stem valves
  • ATEX valves
Unitech SRL Butterfly Valve

If you would like to learn more about the design of a butterfly valve, take a look at our helpful PDF below. You can download this PDF to use at any time.

The design of a butterfly valve

PDF

FAQ's

Butterfly valves are often used in agricultural and water or wastewater treatment applications. They are one of the most common and well-known valve types. Butterfly valves are generally classified as lug or wafer valves, which are available in zero, double or triple offset butterfly valve designs.

Butterfly valves are primarily used as shut-off valves but can be used to regulate flow. A metal disc in the body of the valve is positioned perpendicular to the flow in the closed position and rotated a quarter-turn to be parallel to the flow in the fully opened position. Intermediate rotations allow the regulation of liquid flow.

A triple offset butterfly valve, also known as a triple eccentric butterfly valve, has three offsets that work together to cut off media. Two offsets are placed to the side of the centre, while the third offset is the geometry of the seating surface, creating a cone shape from the disc and seat. This cone angle, along with the two eccentric shaft offsets, allows the disc to seal against the seat with no friction. Triple offset butterfly valves offer zero-leakage performance and extended valve life.