MT's butterfly valves are part of a range designed for demanding installations where reliability, versatility and cost-efficiency are equally important. This article walks through the technical fundamentals, applications, and how to specify them correctly.
What is a butterfly valve and where does it fit?
A butterfly valve is a quarter-turn shut-off valve where a circular disc rotates around an axis perpendicular to the flow. Compact, lightweight and economical compared to gate or ball valves of the same diameter, they are widely used in HVAC, water distribution, industrial process, and pumping installations from DN50 upwards.
The MT Gold series
MT's wafer butterfly valves in the Gold series combine three materials selected for performance and durability:
- Cast iron body — robust, corrosion-resistant for water and HVAC service
- Stainless steel disc — A-316 stainless for chemical resistance and long life
- EPDM seat — flexible elastomer providing positive bubble-tight shutoff
How to specify the right model
When choosing a butterfly valve, consider four factors: pressure rating (typically PN-10 or PN-16 for water and HVAC), operating temperature (EPDM is rated up to 110°C in continuous service), connection type (wafer is standard for most flanged installations), and actuation (manual lever, gear operator, or automated with electric/pneumatic actuator).
For specific projects requiring custom sizing, special seats (NBR, Viton) or industrial actuation, the MT engineering team in Spain provides full technical consultancy on quotation requests.
Browse MT butterfly valves in stock at our Dubai hub: View catalogue →
