Häger GmbH & Co. KG DIN standard butterfly valves
Butterfly valves are used to control or regulate the flow of specific media within a pipeline. This type of industrial valve adjusts the fluid stream using a rotatable disc. Smaller nominal diameters are operated manually via a lever, while larger sizes are typically equipped with a gearbox and handwheel. Additionally, we offer butterfly valves with electric, pneumatic, or hydraulic actuators.
Key Features of Butterfly Valves
Butterfly valves feature a compact design that saves both space and weight. They allow for throttling of the medium, are easy to install, highly versatile, and available with various sealing materials for applications up to 200 °C (392 °F), or with metal-seated designs for temperatures up to 600 °C (1,112 °F).
Eccentric Design
Butterfly valves are available in centric, soft-sealing designs for lower temperature applications, as well as in double-eccentric, metal-seated versions for high temperatures and pressures exceeding 16 bar (232 psi).
Design Types at a Glance
Centric wafer and lug-type butterfly valves, in accordance with DIN or ANSI standards, are suitable for regulating and isolating gaseous or liquid media. They are easy to install and cause lower pressure losses compared to conventional valves.
Sealing Element of the Butterfly Valve
The valve’s sealing element is available in various materials such as NBR, EPDM, and VITON, each resistant to oils, greases, water, chemicals, or high temperatures depending on the application.
Wafer-style Butterfly Valve
Butterfly Valve (Wafer Type)
Nominal Diameter (DN): 40–300
Pressure Rating (PN): 10, 16
Body Materials:
1.0619, A216 WCB, GGG-40, 1.4408, 1.4306, 1.4404, 1.1138, 1.4308, 1.5419, 1.7357, 1.7379, CF8M, CF3M, CF3, WC1, WC6, WC9, LCB, LCC, Duplex, 1.4462, A890 Grade 6A, A995 Grade 6A, CD3MWCuN, F55
Butterfly Valve Description:
Face-to-face dimensions according to DIN EN 558-1.
Butterfly valves come with a declaration of conformity and CE marking according to 2014/68/EC.
Flanged connection per EN 1092-1 and ANSI CLASS 150.
Seat ring available in NBR, EPDM, and FPM (Viton).
Actuation via manual lever or handwheel with gearbox.
Disc available in carbon steel and stainless steel.
Very short face-to-face length
Smooth operation and maintenance-free
Depending on material selection, suitable for water, steam, oil, or other media
ISO-TOP flange for actuator mounting
Actuation options: pneumatic, electric, hydraulic, gas-over-oil, or gearbox with handwheel
Custom coatings available per customer requirements
EAC TR-TS conformity declarations for the Customs Union, independent of order, for export and use in Russia, Belarus, and Kazakhstan (EAC), valid for 1, 3, or 5 years
Compliance with EAC GOST TR TS 010/2011 (Machinery Directive) or EAC GOST TR TS 032/2013 for valves DN25 and larger
Valve passport (TP) according to GOST 2.601–2006
TÜV approvals (3.2 certificate)
BUTTERFLY VALVE FLANGED CONNECTION / THREADED CONNECTION
Butterfly Valve (Lug Type)
Nominal Diameter (DN): 40–300
Pressure Rating (PN): 10, 16
Body Materials:
1.0619, A216 WCB, GGG-40, 1.4408, 1.4306, 1.4404, 1.1138, 1.4308, 1.5419, 1.7357, 1.7379, CF8M, CF3M, CF3, WC1, WC6, WC9, LCB, LCC
Flanged Connection Description:
Face-to-face dimensions according to DIN EN 558-1
Butterfly valves come with a declaration of conformity and CE marking per 2014/68/EC
Flanged connection compliant with EN 1092-1 and ANSI CLASS 150
Seat ring available in NBR, EPDM, and FPM (Viton)
Operated manually via lever or handwheel with gearbox
Disc available in carbon steel and stainless steel
Extremely short face-to-face length
Smooth operation and maintenance-free
Suitable for water, steam, oil, or other media depending on material selection
ISO-TOP flange for actuator mounting
Actuation options: pneumatic, electric, hydraulic, gas-over-oil, or gearbox with handwheel
Custom coatings available upon customer request
EAC TR-TS conformity declarations for the Customs Union, independent of orders, for export and use in Russia, Belarus, and Kazakhstan (EAC), valid for 1, 3, or 5 years
Compliance with EAC GOST TR TS 010/2011 (Machinery Directive) or EAC GOST TR TS 032/2013 for valves DN25 and larger
Valve passport (TP) according to GOST 2.601–2006
TÜV certifications (3.2 certificate)
Easy Automation Options
Thanks to the standard ISO 5211 actuator mounting flange, a wide variety of actuators can be easily installed. However, some data are required for proper actuator sizing:
✓ Torque without safety factor
✓ Type of actuator: electric, pneumatic, or hydraulic
Double-Eccentric Butterfly Valve with Soft Seal
This butterfly valve with integrated flanges is designed for steel or stainless steel pipelines. The valve body is primed and painted, providing corrosion resistance and ensuring a long service life. Face-to-face dimensions conform to EN 558-1, and the sealing surface meets EN 1092-1 in the standard version. Flanged connections according to ANSI standards are also available, allowing the valve to be connected to nearly any piping system.
The soft-sealing version features a double-eccentric disc. By using soft sealing materials, the valve is suitable for applications up to a maximum temperature of 200°C (392°F).
Double-Eccentric Butterfly Valve with Metal Seat
Metal-seated butterfly valves in a double-eccentric design feature a flow-optimized disc mounting. The valve body, made of steel or stainless steel, is suitable for a wide range of applications. This design is commonly used in power plants, chemical processing, and industrial sectors. Seat hardfacing options are also available, which further extend the service life. Unlike soft-sealed butterfly valves, metal-seated industrial valves are suitable for high operating temperatures.
Triple-Eccentric Butterfly Valve with Metal Seat
The triple-eccentric, metal-seated butterfly valve can be manufactured in wafer and flanged designs. The triple-eccentric disc design enables high closing force with low operating effort. The body and disc materials are available in carbon steel or stainless steel. Thanks to the stellite-coated seat, a long service life is ensured. Available with flanged connections as well as butt-weld ends.
