SUBCATEGORIES
Fergo Butterfly Valves
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DVGW Butterfly Valves
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PTFE Butterfly Valves
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Double-eccentric Butterfly Valves
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Pneumatic Butterfly Valves
Absperrklappen mit pneumatischem und elektrischem Antriebwir liefern Ihnen die automatisierte Absperrklappen in verschiedenen Größen von DN 25 - DN 1200 mit elektronischen oder pneumatischen Antrieben. Bis DN30
Electric Butterfly Valves
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Butterfly Valves Gearbox
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AK203 Butterfly valve DN 80 PN10/16 EPDM stainless steel
Product number
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150-1572-11
Lug type butterfly valve DN 80 stainless steel with hand leverFlanged butterfly valve connection PN10/16, butterfly valve body & disc made of stainless steel (1.4408), seat ring made of EPDM, temp. (min. max.) -10°C to +120°C with hand lever (Al)
Nominal width :
DN80 3'' inch
Design :
Lug
Face to Face length :
EN558-1, Series 20
Sleeve material :
EPDM
Disc :
Stainless steel
Body:
Stainless Steel
Price
€237.12
€282.17 incl. VAT
Delivery Time:
in stock
Available:
In Stock
AK203 Butterfly valve DN 150 PN16 EPDM stainless steel hand lever
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150-1572-14
Lug butterfly valve stainless steel DN 150 with hand leverButterfly valve connection PN10/16, butterfly valve body & disc made of stainless steel (1.4408), seat ring made of EPDM, temp. (min. max.) -10°C to +120°C with hand lever (Al)
Nominal width :
DN150 - 6'' inch
Design :
Lug
Face to Face length :
EN558-1, Series 20
Sleeve material :
EPDM
Disc :
Stainless steel
Body:
Stainless Steel
Price
€536.42
€638.34 incl. VAT
Delivery Time:
in stock
Available:
In Stock
AK202 Butterfly valve DN 100 PN16 EPDM stainless steel hand lever
Product number
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150-1571-12
Stainless steel wafer type butterfly valve DN 100 with hand lever
Butterfly valve connection PN10/16/150lbs, butterfly valve body & butterfly valve disc made of stainless steel (1.4408), seat ring made of EPDM with hand lever (Al)
Nominal width :
DN100 - 4'' inch
Design :
Wafer
Face to Face length :
EN558-1, Series 20
Sleeve material :
EPDM
Disc :
Stainless steel
Body:
Stainless Steel
Price
€246.69
€293.56 incl. VAT
Delivery Time:
in stock
Available:
In Stock
AK210W Butterfly valve stainless steel DN 50 DVGW drinking water EPDM
Product number
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150-1614-09
Wafer butterfly valve DN 50 in stainless steel DVGWWafer type butterfly valve AK210W features a concentric design, ideal for installation between PN10/16/150lbs flanges. The body and disc are made of CF8M (1.4408), the shaft of AISI 316 and the seat ring of EPDM for reliable sealing. The aluminium hand lever helps with simple and precise actuation and the ISO 5211 top flange offers more automation options. With DVGW drinking water approval, this reliable butterfly valve is ideal for industrial and drinking water applications.
Nominal width :
DN50 - 2'' inch
Design :
Wafer
Face to Face length :
EN558-1, Series 20
Sleeve material :
EPDM
Disc :
Stainless steel
Body:
Stainless Steel
Price
€281.00
€334.39 incl. VAT
Delivery Time:
Available:
In Stock
AK210W Butterfly valve stainless steel DN 65 DVGW drinking water EPDM
Product number
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150-1614-10
Wafer butterfly valve DN 65 in stainless steel DVGWWafer type butterfly valve AK210W features a concentric design, ideal for installation between PN10/16/150lbs flanges. The body and disc are made of CF8M (1.4408), the shaft of AISI 316 and the seat ring of EPDM for reliable sealing. The aluminium hand lever helps with simple and precise actuation and the ISO 5211 top flange offers more automation options. With DVGW drinking water approval, this reliable butterfly valve is ideal for industrial and drinking water applications.
Nominal width :
DN65 - 2 1/2'' inch
Design :
Wafer
Face to Face length :
EN558-1, Series 20
Sleeve material :
EPDM
Disc :
Stainless steel
Body:
Stainless Steel
Price
€296.47
€352.80 incl. VAT
Delivery Time:
Available:
In Stock
AK210W Butterfly valve stainless steel DN 80 DVGW drinking water EPDM
Product number
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150-1614-11
Wafer butterfly valve DN 80 in stainless steel DVGWWafer type butterfly valve AK210W features a concentric design, ideal for installation between PN10/16/150lbs flanges. The body and disc are made of CF8M (1.4408), the shaft of AISI 316 and the seat ring of EPDM for reliable sealing. The aluminium hand lever helps with simple and precise actuation and the ISO 5211 top flange offers more automation options. With DVGW drinking water approval, this reliable butterfly valve is ideal for industrial and drinking water applications.
Nominal width :
DN80 3'' inch
Design :
Wafer
Face to Face length :
EN558-1, Series 20
Sleeve material :
EPDM
Disc :
Stainless steel
Body:
Stainless Steel
Price
€336.76
€400.74 incl. VAT
Delivery Time:
Available:
In Stock
AK210W Butterfly valve stainless steel DN 100 DVGW drinking water EPDM
Product number
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150-1614-12
Wafer butterfly valve DN 100 in stainless steel DVGWWafer type butterfly valve AK210W features a concentric design, ideal for installation between PN10/16/150lbs flanges. The body and disc are made of CF8M (1.4408), the shaft of AISI 316 and the seat ring of EPDM for reliable sealing. The aluminium hand lever helps with simple and precise actuation and the ISO 5211 top flange offers more automation options. With DVGW drinking water approval, this reliable butterfly valve is ideal for industrial and drinking water applications.
Nominal width :
DN100 - 4'' inch
Design :
Wafer
Face to Face length :
EN558-1, Series 20
Sleeve material :
EPDM
Disc :
Stainless steel
Body:
Stainless Steel
Price
€368.58
€438.61 incl. VAT
Delivery Time:
Available:
In Stock
AK210W Butterfly valve stainless steel DN 125 DVGW drinking water EPDM
Product number
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150-1614-13
Wafer butterfly valve DN 125 in stainless steel DVGWWafer type butterfly valve AK210W features a concentric design, ideal for installation between PN10/16/150lbs flanges. The body and disc are made of CF8M (1.4408), the shaft of AISI 316 and the seat ring of EPDM for reliable sealing. The aluminium hand lever helps with simple and precise actuation and the ISO 5211 top flange offers more automation options. With DVGW drinking water approval, this reliable butterfly valve is ideal for industrial and drinking water applications.
Nominal width :
DN125 - 5'' inch
Design :
Wafer
Face to Face length :
EN558-1, Series 20
Sleeve material :
EPDM
Disc :
Stainless steel
Body:
Stainless Steel
Price
€510.66
€607.69 incl. VAT
Delivery Time:
Available:
In Stock
AK210W Butterfly valve stainless steel DN 150 DVGW drinking water EPDM
Product number
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150-1614-14
Wafer butterfly valve DN 150 in stainless steel DVGWWafer type butterfly valve AK210W features a concentric design, ideal for installation between PN10/16/150lbs flanges. The body and disc are made of CF8M (1.4408), the shaft of AISI 316 and the seat ring of EPDM for reliable sealing. The aluminium hand lever helps with simple and precise actuation and the ISO 5211 top flange offers more automation options. With DVGW drinking water approval, this reliable butterfly valve is ideal for industrial and drinking water applications.
Nominal width :
DN150 - 6'' inch
Design :
Wafer
Face to Face length :
EN558-1, Series 20
Sleeve material :
EPDM
Disc :
Stainless steel
Body:
Stainless Steel
Price
€560.88
€667.45 incl. VAT
Delivery Time:
Available:
In Stock
AK210W Butterfly valve stainless steel DN 200 DVGW drinking water EPDM
Product number
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150-1614-16
Wafer butterfly valve DN 200 in stainless steel DVGWWafer type butterfly valve AK210W features a concentric design, ideal for installation between PN10/16/150lbs flanges. The body and disc are made of CF8M (1.4408), the shaft of AISI 316 and the seat ring of EPDM for reliable sealing. The ductile iron hand lever helps with simple and precise actuation and the ISO 5211 top flange offers more automation options. With DVGW drinking water approval, this reliable butterfly valve is ideal for industrial and drinking water applications.
Nominal width :
DN200 - 8'' inch
Design :
Wafer
Face to Face length :
EN558-1, Series 20
Sleeve material :
EPDM
Disc :
Stainless steel
Body:
Stainless Steel
Price
€781.91
€930.47 incl. VAT
Delivery Time:
Available:
In Stock
AK210G Butterfly valve stainless steel DN 50 DVGW Gas NBR
Product number
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150-1615-09
Wafer butterfly valve DN 50 in stainless steel DVGW GasWafer type butterfly valve AK210G with concentric design, ideal for installation between PN10/16/150lbs flanges. The body and disc are made of CF8M (1.4408), the shaft of AISI 316 and the seat ring of NBR for reliable sealing. The aluminium hand lever helps with simple and precise actuation while the ISO 5211 top flange offers additional automation options. With DVGW approval, this high-quality gas butterfly valve is ideal for industrial and gas applications.
Nominal width :
DN50 - 2'' inch
Design :
Wafer
Face to Face length :
EN558-1, Series 20
Sleeve material :
NBR
Disc :
Stainless steel
Body:
Stainless Steel
Price
€278.98
€331.99 incl. VAT
Delivery Time:
Available:
In Stock
AK210G Butterfly valve stainless steel DN 65 DVGW Gas NBR
Product number
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150-1615-10
Wafer butterfly valve DN 65 in stainless steel DVGW GasWafer type butterfly valve AK210G with concentric design, ideal for installation between PN10/16/150lbs flanges. The body and disc are made of CF8M (1.4408), the shaft of AISI 316 and the seat ring of NBR for reliable sealing. The aluminium hand lever helps with simple and precise actuation while the ISO 5211 top flange offers additional automation options. With DVGW approval, this high-quality gas butterfly valve is ideal for industrial and gas applications.
Nominal width :
DN65 - 2 1/2'' inch
Design :
Wafer
Face to Face length :
EN558-1, Series 20
Sleeve material :
NBR
Disc :
Stainless steel
Body:
Stainless Steel
Price
€294.98
€351.03 incl. VAT
Delivery Time:
Available:
In Stock
AK210G Butterfly valve stainless steel DN 80 DVGW Gas NBR
Product number
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150-1615-11
Wafer butterfly valve DN 80 in stainless steel DVGW GasWafer type butterfly valve AK210G with concentric design, ideal for installation between PN10/16/150lbs flanges. The body and disc are made of CF8M (1.4408), the shaft of AISI 316 and the seat ring of NBR for reliable sealing. The aluminium hand lever helps with simple and precise actuation while the ISO 5211 top flange offers additional automation options. With DVGW approval, this high-quality gas butterfly valve is ideal for industrial and gas applications.
Nominal width :
DN80 3'' inch
Design :
Wafer
Face to Face length :
EN558-1, Series 20
Sleeve material :
NBR
Disc :
Stainless steel
Body:
Stainless Steel
Price
€335.40
€399.13 incl. VAT
Delivery Time:
Available:
In Stock
AK210G Butterfly valve stainless steel DN 100 DVGW Gas NBR
Product number
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150-1615-12
Wafer butterfly valve DN 100 in stainless steel DVGW GasWafer type butterfly valve AK210G with concentric design, ideal for installation between PN10/16/150lbs flanges. The body and disc are made of CF8M (1.4408), the shaft of AISI 316 and the seat ring of NBR for reliable sealing. The aluminium hand lever helps with simple and precise actuation while the ISO 5211 top flange offers additional automation options. With DVGW approval, this high-quality gas butterfly valve is ideal for industrial and gas applications.
Nominal width :
DN100 - 4'' inch
Design :
Wafer
Face to Face length :
EN558-1, Series 20
Sleeve material :
NBR
Disc :
Stainless steel
Body:
Stainless Steel
Price
€365.78
€435.28 incl. VAT
Delivery Time:
Available:
In Stock
AK210G Butterfly valve stainless steel DN 125 DVGW Gas NBR
Product number
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150-1615-13
Wafer butterfly valve DN 125 in stainless steel DVGW GasWafer type butterfly valve AK210G with concentric design, ideal for installation between PN10/16/150lbs flanges. The body and disc are made of CF8M (1.4408), the shaft of AISI 316 and the seat ring of NBR for reliable sealing. The aluminium hand lever helps with simple and precise actuation while the ISO 5211 top flange offers additional automation options. With DVGW approval, this high-quality gas butterfly valve is ideal for industrial and gas applications.
Nominal width :
DN125 - 5'' inch
Design :
Wafer
Face to Face length :
EN558-1, Series 20
Sleeve material :
NBR
Disc :
Stainless steel
Body:
Stainless Steel
Price
€506.47
€602.70 incl. VAT
Delivery Time:
Available:
In Stock
AK210G Butterfly valve stainless steel DN 150 DVGW Gas NBR
Product number
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150-1615-14
Wafer butterfly valve DN 150 in stainless steel DVGW GasWafer type butterfly valve AK210G with concentric design, ideal for installation between PN10/16/150lbs flanges. The body and disc are made of CF8M (1.4408), the shaft of AISI 316 and the seat ring of NBR for reliable sealing. The aluminium hand lever helps with simple and precise actuation while the ISO 5211 top flange offers additional automation options. With DVGW approval, this high-quality gas butterfly valve is ideal for industrial and gas applications.
Nominal width :
DN150 - 6'' inch
Design :
Wafer
Face to Face length :
EN558-1, Series 20
Sleeve material :
NBR
Disc :
Stainless steel
Body:
Stainless Steel
Price
€557.85
€663.84 incl. VAT
Delivery Time:
Available:
In Stock
AK210G Butterfly valve stainless steel DN 200 DVGW Gas NBR
Product number
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150-1615-16
Wafer butterfly valve DN 200 in stainless steel DVGW GasWafer type butterfly valve AK210G with concentric design, ideal for installation between PN10/16/150lbs flanges. The body and disc are made of CF8M (1.4408), the shaft of AISI 316 and the seat ring of NBR for reliable sealing. The ductile iron hand lever helps with simple and precise actuation while the ISO 5211 top flange offers additional automation options. With DVGW approval, this high-quality gas butterfly valve is ideal for industrial and gas applications.
Nominal width :
DN200 - 8'' inch
Design :
Wafer
Face to Face length :
EN558-1, Series 20
Sleeve material :
NBR
Disc :
Stainless steel
Body:
Stainless Steel
Price
€769.24
€915.40 incl. VAT
Delivery Time:
Available:
In Stock
AK211W Butterfly valve stainless steel DN 50 PN10/16 DVGW drinking water EPDM
Product number
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150-1634-09
Lug butterfly valve DN 50 in stainless steel DVGWLug type butterfly valve AK211W features a concentric design, ideal for installation between PN10/16 flanges. The body and disc are made of CF8M (1.4408), the shaft of AISI 316 and the seat ring of EPDM for reliable sealing. The aluminium hand lever helps with simple and precise actuation and the ISO 5211 top flange offers more automation options. With DVGW drinking water approval, this reliable butterfly valve is ideal for industrial and drinking water applications.
Nominal width :
DN50 - 2'' inch
Design :
Lug
Face to Face length :
EN558-1, Series 20
Sleeve material :
EPDM
Disc :
Stainless steel
Body:
Stainless Steel
Price
€322.52
€383.80 incl. VAT
Delivery Time:
Available:
In Stock
AK211G Butterfly valve stainless steel DN 50 PN10/16 DVGW Gas NBR
Product number
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150-1635-09
Lug butterfly valve DN 50 in stainless steel DVGW GasLug type butterfly valve AK211G with concentric design, ideal for installation between PN10/16 flanges. The body and disc are made of CF8M (1.4408), the shaft of AISI 316 and the seat ring of NBR for reliable sealing. The aluminium hand lever helps with simple and precise actuation while the ISO 5211 top flange offers additional automation options. With DVGW approval, this high-quality gas butterfly valve is ideal for industrial and gas applications.
Nominal width :
DN50 - 2'' inch
Design :
Lug
Face to Face length :
EN558-1, Series 20
Sleeve material :
NBR
Disc :
Stainless steel
Body:
Stainless Steel
Price
€320.51
€381.41 incl. VAT
Delivery Time:
Available:
In Stock
AK211W Butterfly valve stainless steel DN 65 PN10/16 DVGW drinking water EPDM
Product number
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150-1634-10
Lug butterfly valve DN 65 in stainless steel DVGWLug type butterfly valve AK211W features a concentric design, ideal for installation between PN10/16 flanges. The body and disc are made of CF8M (1.4408), the shaft of AISI 316 and the seat ring of EPDM for reliable sealing. The aluminium hand lever helps with simple and precise actuation and the ISO 5211 top flange offers more automation options. With DVGW drinking water approval, this reliable butterfly valve is ideal for industrial and drinking water applications.
Nominal width :
DN65 - 2 1/2'' inch
Design :
Lug
Face to Face length :
EN558-1, Series 20
Sleeve material :
EPDM
Disc :
Stainless steel
Body:
Stainless Steel
Price
€356.98
€424.81 incl. VAT
Delivery Time:
Available:
In Stock
Industry standard and approval for stainless steel butterfly valves
To ensure the performance and safety of the valves, the industry has created various norms and standards. FERGO stainless steel butterfly valves comply with many of these standards. Flange connections according to EN 1092-2 and ASME B16.5 are two of the most important standards used in the industry. Similarly, butterfly valves with an EN 558 Series 20 (ISO 5752-20) overall length are the most common series. Their ISO 5211 top flange makes the valves particularly suitable for manual or automated use with actuators.
The butterfly valves are tested and inspected in accordance with ISO 5208. Stainless steel butterfly valve for drinking water with EPDM seal with DVGW, ACS, WRAS, KTW, W270 drinking water approval or for gas butterfly valve with NBR seal with DVGW gas approval EN13774. In addition, our high-performance stainless steel valves are also certified with TA Luft and ATEX approval for potentially explosive atmospheres.
Frequently Asked Questions – Butterfly Valves
FERGO carries a comprehensive range of butterfly valves to cover virtually every industrial and building services application. The main subcategories are:
- Fergo Butterfly Valves – Standard wafer and lug butterfly valves (AK200/AK201) in ductile iron GGG40 with stainless steel disc, available in EPDM, NBR, FKM/FPM, and PTFE seat materials, DN25 to DN1200, PN6/10/16 and ANSI Class 150.
- Stainless Steel Butterfly Valves – Full stainless steel body and disc for corrosive media, food, pharmaceutical, and outdoor applications.
- DVGW Butterfly Valves – Certified valves for potable water (W270) and natural gas applications, fully compliant with German and European standards.
- Electric Butterfly Valves – Automated valves with electric actuators for PLC integration, remote control, and building management systems.
- Pneumatic Butterfly Valves – Fast-acting automated valves with pneumatic actuators, including ATEX-rated options for hazardous areas, DN25 to DN1200.
- PTFE Butterfly Valves – PTFE-lined valves for aggressive acids, alkalis, solvents, and high-purity processes.
- Butterfly Valves with Gearbox – Manual handwheel operation for larger nominal sizes where lever operation is not practical.
- Double-eccentric Butterfly Valves – High-performance valves with metal sealing for higher pressures, temperatures, and demanding process applications.
Both designs mount between pipe flanges, but they do it differently. A wafer butterfly valve is clamped between two flanges using long through-bolts that pass through both flanges and the valve body. It is the more compact and economical choice and is ideal when you always want to isolate a full pipe section. A lug butterfly valve has threaded inserts (lugs) cast into its body. Each side of the pipeline bolts directly and independently into these lugs. This allows one side of the pipeline to be disconnected and removed while the other side remains pressurised – a configuration known as dead-end service. If you need maintenance flexibility or plan to work on sections of pipe without a full system shutdown, lug design is the better option. FERGO offers both designs across all its standard butterfly valve ranges.
The seat or liner is the heart of the butterfly valve – it is in direct contact with your medium and determines chemical compatibility and temperature limits. Here is a quick guide:
- EPDM – The all-rounder for water, hot water, steam, and mild chemicals. Resistant up to approx. 120 °C. Widely used in HVAC and building services. Not suitable for mineral oils.
- NBR (Nitrile) – Designed for mineral oil-based media such as hydraulic oil, fuels, and cooling lubricants. Good resistance to aliphatic hydrocarbons. Not recommended for hot water or steam.
- FKM / FPM (Viton®) – Excellent resistance to a wide range of aggressive chemicals, oils, and elevated temperatures. Suitable for more demanding industrial process applications.
- PTFE (Teflon®) – Near-universal chemical resistance. The first choice for aggressive acids, alkalis, and solvents. Also available as a full PTFE-lined valve – see PTFE Butterfly Valves.
Yes – if your application involves natural gas, liquefied petroleum gas (propane/butane), or potable drinking water, you are legally required to use valves that carry the relevant DVGW certification. FERGO's DVGW Butterfly Valves hold approvals under DVGW Gas (DIN EN 13774) and DVGW Drinking Water (W270), ensuring full compliance with German and European safety and material standards. These certified valves are available in both wafer and lug design, from DN25 to DN300, with PN6 to PN16 pressure ratings, and can be equipped with hand levers, gearboxes, electric actuators, or pneumatic actuators.
A centric (concentric) butterfly valve has its disc shaft running directly through the centre of the disc and the seat. When the disc closes, it rubs against the seat along the full rotation, which leads to some wear over time. This design is cost-effective and perfectly suitable for standard industrial and building services applications at moderate pressures and temperatures. A double-eccentric (double-offset) butterfly valve has its shaft positioned with two offsets from the disc and seat centreline. This means the disc lifts cleanly away from the seat almost immediately on opening, and seats with a cam-like action on closing – resulting in virtually no rubbing wear. This gives significantly longer service life, better suitability for higher pressures and temperatures, and a tight metal-to-metal seal. FERGO's Double-eccentric Butterfly Valves are the right choice for demanding process engineering, power generation, shipbuilding, and applications where long-term tightness is critical.
Both allow the valve to be operated automatically without manual intervention, but they differ in speed, power source, and ideal use case:
- Electric Butterfly Valves – Powered by mains electricity (24V, 230V, 240V). They offer precise positioning, easy integration into PLC and building management systems via control signals (0–10V, 4–20mA), and clear position feedback. The ideal choice for building automation, Industry 4.0 environments, and applications requiring modulating control. See Electric Butterfly Valves.
- Pneumatic Butterfly Valves – Powered by compressed air. They are extremely fast-acting and powerful, making them the preferred choice for quick-cycling processes, emergency shut-down systems, and hazardous (ATEX/Ex) areas where electrical equipment is restricted. Available in single-acting (spring-return, fail-safe) and double-acting variants. See Pneumatic Butterfly Valves.
FERGO butterfly valves cover a very wide range of nominal sizes from DN25 (1") up to DN1200 (48"). Available pressure ratings (PN classes) include PN6, PN10, PN16, and ANSI/ASME Class 150, making them compatible with both DIN and imperial flange standards. Sizes and pressure ratings available depend on the specific subcategory – for example, standard Fergo Butterfly Valves and Pneumatic Butterfly Valves cover the full DN25–DN1200 range, while DVGW-certified valves are available from DN25 to DN300. Use the product configurator on this page to filter by nominal width, connection standard, and pressure class to find your exact match.
Ductile iron (GGG40) with epoxy coating is the standard body material for most industrial butterfly valves – it is highly robust, cost-effective, and suitable for the vast majority of water, air, and neutral media applications. You should upgrade to a Stainless Steel Butterfly Valve when your application involves one or more of the following:
- Corrosive or aggressive process media that would attack iron over time
- Food, beverage, or pharmaceutical processes where hygiene standards and material compliance are required
- Outdoor or marine environments where the valve body is exposed to corrosive atmospheres or seawater
- High-purity applications where iron contamination of the medium is not acceptable