Provides fast opening and closing
A butterfly valve needs only a 90° quarter-turn; a ball valve likewise switches quickly between fully open and fully closed, losing no time when an emergency shutoff is needed.
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Butterfly / Ball Valves
Butterfly and ball valves are used to open and close a line quickly and with a complete seal. Butterfly valves offer low weight and low cost on large-diameter lines, while ball valves offer a full-bore advantage at small diameters. As Denfor Endüstriyel, we supply flanged, wafer and threaded connection valves, with body and sealing materials matched to line pressure, temperature and fluid type.
Line diameterDN15 – DN600
Pressure classPN6 / PN10 / PN16
ConnectionFlanged / wafer / threaded
OperationManual / actuated
Why it matters
What do butterfly and ball valves do?
Opening and closing the line quickly and with a complete seal is the standard solution for main line shutoff and equipment isolation.
Delivers a fully sealed shutoff
With the right sealing material (NBR, EPDM, PTFE, etc.), a complete shutoff is achieved even under line pressure, safely isolating the line during maintenance or a fault.
Flanged, wafer and threaded connection options
Depending on the existing line's connection type, you can choose flanged, wafer (clamped between two flanges) or, at small diameters, threaded connections — all easing installation.
Manual or actuated operation
It can be operated manually in the field, or remotely via an electric or pneumatic actuator connected to the automation system.
Types
Sub-types of butterfly and ball valves
Both are used to shut off the line; what sets them apart is the diameter range and the bore structure.
Butterfly valve
The disc-shaped closing element provides low weight, low cost and easy installation on large-diameter lines; widely used in water, air and process lines.
- Large diameter, economical solution
- Low weight
- Flanged/wafer connection
Ball valve
The spherical element inside offers a bore equal to the line diameter when fully open; provides a fully sealed shutoff with low pressure loss at small-to-medium diameters.
- Full bore
- Low pressure loss
- Small/medium diameter
Actuated butterfly/ball valve
Connected to the automation system by adding an electric or pneumatic actuator; used on lines that need remote opening/closing or system integration.
- Electric/pneumatic actuator
- Remote control
- Automation integration
Selection criteria
What data determines the right butterfly/ball valve?
Selection isn't possible without the first two items. The rest determine the connection type and equipment.
ParametreNeden belirleyiciBizden istenen
Line diameter
Determined by the nominal diameter of the existing pipeline.
DN size
Pressure class
The PN class is chosen to match the line's operating pressure.
PN6 / 10 / 16 / 25
Fluid type and temperature
Determines the sealing material (NBR, EPDM, PTFE, etc.).
°C + fluid type
Connection type
Whether the existing line is flanged, suited to wafer, or threaded.
Flanged / wafer / threaded
Operation type
Whether manual or an electric/pneumatic actuated model is wanted.
Manual / actuated
Body material
Cast or stainless body is chosen based on the fluid and ambient conditions.
Cast / stainless
Teklif için elinizde şunlar varsa yeter
Hepsi olmasa da olur. Eksik kalanları sizinle birlikte tamamlarız.
Create a quote request- Line diameter (DN size)
- Pressure class (PN)
- Fluid type and operating temperature
- Connection type (flanged/wafer/threaded)
- Whether manual or actuated is wanted
- Nameplate data of the existing valve (if a replacement)
FAQ
Questions from the field
The questions we hear most often when quoting butterfly and ball valves.
What is the difference between a butterfly valve and a ball valve?
In a butterfly valve, a disc-shaped element rotates; it is economical and lightweight at large diameters. In a ball valve, the spherical element offers a bore equal to the line diameter when fully open; it gives full flow and a low pressure loss advantage at small-to-medium diameters.
What does a wafer connection mean?
A wafer-type valve has no flange of its own and is installed clamped between two pipe flanges; it is lighter and more economical than the flanged type, but removing it requires separating the line at one point.
When is an actuated valve needed?
An electric or pneumatic actuated model is preferred when the valve needs to be opened and closed remotely or via an automation system, or at points where field access is difficult.
How is the sealing material selected?
The choice is made among materials such as NBR, EPDM, PTFE or Viton based on the fluid's type, temperature and chemical effect; choosing the wrong material leads to early leakage.
Do you only serve Istanbul?
No. While our office is on Istanbul's Anatolian side (Ataşehir), we supply and ship across Istanbul's European side, the surrounding provinces and the Marmara region, and Turkey as a whole — covering your equipment end to end, from a single source.
Next step
Let's pin down what you need, together
Share your line diameter and pressure class, and we'll work out the right butterfly or ball valve for your line together.
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