SUBCATEGORIES
Stainless Steel Butterfly Valves
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PTFE Butterfly Valves
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DVGW Butterfly Valves
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Fergo Butterfly Valves
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Butterfly Valves Gearbox
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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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AX130 Double eccentric butterfly valve DN 50 PN10/16/ANSI150 WCB RPTFE ATEX
Product number
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151-1310-09
Double-eccentric butterfly valve DN 50Double offset type, WAFER type for installation between flanges PN10, PN16, ANSI 150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate A, Actuator connection: ISO 5211, Body: ASTM A216 WCB, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: RPTFE (PTFE + 25% glass fiber) , Packing: PTFE, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +220°C, Operation: hand lever (SS316), TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc.
Nominal width :
DN50 - 2'' inch
Design :
Wafer, double offset
Sleeve material :
RPTFE
Face to Face length :
EN558-1, Series 20
Body:
ASTM A216 WCB
Disc :
Stainless steel
Price
€377.60
€449.34 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
AX130 Double eccentric butterfly valve DN 65 PN10/16/ANSI150 WCB RPTFE ATEX
Product number
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151-1310-10
Double-eccentric butterfly valve DN 65Double offset type, WAFER type for installation between flanges PN10, PN16, ANSI 150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate A, Actuator connection: ISO 5211, Body: ASTM A216 WCB, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: RPTFE (PTFE + 25% glass fiber) , Packing: PTFE, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +220°C, Operation: hand lever (SS316), TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc.
Nominal width :
DN65 - 2 1/2'' inch
Design :
Wafer, double offset
Sleeve material :
RPTFE
Face to Face length :
EN558-1, Series 20
Body:
ASTM A216 WCB
Disc :
Stainless steel
Price
€417.60
€496.94 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
AX130 Double eccentric butterfly valve DN 80 PN10/16/ANSI150 WCB RPTFE ATEX
Product number
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151-1310-11
Double-eccentric butterfly valve DN 80Double offset type, WAFER type for installation between flanges PN10, PN16, ANSI 150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate A, Actuator connection: ISO 5211, Body: ASTM A216 WCB, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: RPTFE (PTFE + 25% glass fiber) , Packing: PTFE, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +220°C, Operation: hand lever (SS316), TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc.
Nominal width :
DN80 3'' inch
Design :
Wafer, double offset
Sleeve material :
RPTFE
Face to Face length :
EN558-1, Series 20
Body:
ASTM A216 WCB
Disc :
Stainless steel
Price
€446.40
€531.22 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
AX130 Double eccentric butterfly valve DN 100 PN10/16/ANSI150 WCB RPTFE ATEX
Product number
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151-1310-12
Double-eccentric butterfly valve DN 100Double offset type, WAFER type for installation between flanges PN10, PN16, ANSI 150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate A, Actuator connection: ISO 5211, Body: ASTM A216 WCB, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: RPTFE (PTFE + 25% glass fiber) , Packing: PTFE, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +220°C, Operation: hand lever (SS316), TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc.
Nominal width :
DN100 - 4'' inch
Design :
Wafer, double offset
Sleeve material :
RPTFE
Face to Face length :
EN558-1, Series 20
Body:
ASTM A216 WCB
Disc :
Stainless steel
Price
€505.60
€601.66 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
AX130 Double eccentric butterfly valve DN 125 PN10/16/ANSI150 WCB RPTFE ATEX
Product number
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151-1310-13
Double-eccentric butterfly valve DN 125Double offset type, WAFER type for installation between flanges PN10, PN16, ANSI 150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate A, Actuator connection: ISO 5211, Body: ASTM A216 WCB, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: RPTFE (PTFE + 25% glass fiber) , Packing: PTFE, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +220°C, Operation: hand lever (SS316), TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc.
Nominal width :
DN125 - 5'' inch
Design :
Wafer, double offset
Sleeve material :
RPTFE
Face to Face length :
EN558-1, Series 20
Body:
ASTM A216 WCB
Disc :
Stainless steel
Price
€612.80
€729.23 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
AX130 Double eccentric butterfly valve DN 50 PN10/16/ANSI150 WCB INCONEL 718 ATEX
Product number
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151-1311-09
Double-eccentric butterfly valve DN 50Double offset type, WAFER type for installation between flanges PN10, PN16, ANSI 150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate AA, Actuator connection: ISO 5211, Body: ASTM A216 WCB, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: INCONEL 718 (Metal-seated), Packing: Graphite, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +360°C(*), Operation: hand lever (SS316), TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc. (*) It is recommended to install heat sink from 225°C.
Nominal width :
DN50 - 2'' inch
Design :
Wafer, double offset
Face to Face length :
EN558-1, Series 20
Sleeve material :
INCONEL 718
Body:
ASTM A216 WCB
Disc :
Stainless steel
Price
€456.00
€542.64 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
AX130 Double eccentric butterfly valve DN 65 PN10/16/ANSI150 WCB INCONEL 718 ATEX
Product number
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151-1311-10
Double-eccentric butterfly valve DN 65Double offset type, WAFER type for installation between flanges PN10, PN16, ANSI 150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate AA, Actuator connection: ISO 5211, Body: ASTM A216 WCB, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: INCONEL 718 (Metal-seated), Packing: Graphite, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +360°C(*), Operation: hand lever (SS316), TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc. (*) It is recommended to install heat sink from 225°C.
Nominal width :
DN65 - 2 1/2'' inch
Design :
Wafer, double offset
Face to Face length :
EN558-1, Series 20
Sleeve material :
INCONEL 718
Body:
ASTM A216 WCB
Disc :
Stainless steel
Price
€468.80
€557.87 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
AX130 Double eccentric butterfly valve DN 80 PN10/16/ANSI150 WCB INCONEL 718 ATEX
Product number
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151-1311-11
Double-eccentric butterfly valve DN 80Double offset type, WAFER type for installation between flanges PN10, PN16, ANSI 150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate AA, Actuator connection: ISO 5211, Body: ASTM A216 WCB, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: INCONEL 718 (Metal-seated), Packing: Graphite, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +360°C(*), Operation: hand lever (SS316), TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc. (*) It is recommended to install heat sink from 225°C.
Nominal width :
DN80 3'' inch
Design :
Wafer, double offset
Face to Face length :
EN558-1, Series 20
Sleeve material :
INCONEL 718
Body:
ASTM A216 WCB
Disc :
Stainless steel
Price
€548.80
€652.12 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
AX130 Double eccentric butterfly valve DN 100 PN10/16/ANSI150 WCB INCONEL 718 ATEX
Product number
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151-1311-12
Double-eccentric butterfly valve DN 100Double offset type, WAFER type for installation between flanges PN10, PN16, ANSI 150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate AA, Actuator connection: ISO 5211, Body: ASTM A216 WCB, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: INCONEL 718 (Metal-seated), Packing: Graphite, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +360°C(*), Operation: hand lever (SS316), TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc. (*) It is recommended to install heat sink from 225°C.
Nominal width :
DN100 - 4'' inch
Design :
Wafer, double offset
Face to Face length :
EN558-1, Series 20
Sleeve material :
INCONEL 718
Body:
ASTM A216 WCB
Disc :
Stainless steel
Price
€617.60
€734.94 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
AX130 Double eccentric butterfly valve DN 125 PN10/16/ANSI150 WCB INCONEL 718 ATEX
Product number
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151-1311-13
Double-eccentric butterfly valve DN 125Double offset type, WAFER type for installation between flanges PN10, PN16, ANSI 150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate AA, Actuator connection: ISO 5211, Body: ASTM A216 WCB, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: INCONEL 718 (Metal-seated), Packing: Graphite, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +360°C(*), Operation: hand lever (SS316), TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc. (*) It is recommended to install heat sink from 225°C.
Nominal width :
DN125 - 5'' inch
Design :
Wafer, double offset
Face to Face length :
EN558-1, Series 20
Sleeve material :
INCONEL 718
Body:
ASTM A216 WCB
Disc :
Stainless steel
Price
€748.80
€891.07 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
AX130 Double eccentric butterfly valve DN 150 PN10/16/ANSI150 WCB RPTFE ATEX
Product number
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151-1310-14
Double-eccentric butterfly valve DN 150Double offset type, WAFER type for installation between flanges PN10, PN16, ANSI 150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate A, Actuator connection: ISO 5211, Body: ASTM A216 WCB, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: RPTFE (PTFE + 25% glass fiber) , Packing: PTFE, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +220°C, Operation: Gearbox, TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc.
Nominal width :
DN150 - 6'' inch
Design :
Wafer, double offset
Sleeve material :
RPTFE
Face to Face length :
EN558-1, Series 20
Body:
ASTM A216 WCB
Disc :
Stainless steel
Price
€676.80
€805.39 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
AX130 Double eccentric butterfly valve DN 200 PN10/16/ANSI150 WCB RPTFE ATEX
Product number
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151-1310-16
Double-eccentric butterfly valve DN 200Double offset type, WAFER type for installation between flanges PN10, PN16, ANSI 150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate A, Actuator connection: ISO 5211, Body: ASTM A216 WCB, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: RPTFE (PTFE + 25% glass fiber) , Packing: PTFE, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +220°C, Operation: Gearbox, TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc.
Nominal width :
DN200 - 8'' inch
Design :
Wafer, double offset
Sleeve material :
RPTFE
Face to Face length :
EN558-1, Series 20
Body:
ASTM A216 WCB
Disc :
Stainless steel
Price
€1,185.60
€1,410.86 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
AX130 Double eccentric butterfly valve DN 250 PN10/16/ANSI150 WCB RPTFE ATEX
Product number
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151-1310-18
Double-eccentric butterfly valve DN 250Double offset type, WAFER type for installation between flanges PN10, PN16, ANSI 150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate A, Actuator connection: ISO 5211, Body: ASTM A216 WCB, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: RPTFE (PTFE + 25% glass fiber) , Packing: PTFE, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +220°C, Operation: Gearbox, TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc.
Nominal width :
DN250 - 10'' inch
Design :
Wafer, double offset
Sleeve material :
RPTFE
Face to Face length :
EN558-1, Series 20
Body:
ASTM A216 WCB
Disc :
Stainless steel
Price
€1,550.40
€1,844.98 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
AX130 Double eccentric butterfly valve DN 300 PN10/16/ANSI150 WCB RPTFE ATEX
Product number
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151-1310-20
Double-eccentric butterfly valve DN 300Double offset type, WAFER type for installation between flanges PN10, PN16, ANSI 150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate A, Actuator connection: ISO 5211, Body: ASTM A216 WCB, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: RPTFE (PTFE + 25% glass fiber) , Packing: PTFE, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +220°C, Operation: Gearbox, TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc.
Nominal width :
DN300 - 12'' inch
Design :
Wafer, double offset
Sleeve material :
RPTFE
Face to Face length :
EN558-1, Series 20
Body:
ASTM A216 WCB
Disc :
Stainless steel
Price
€2,046.40
€2,435.22 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
AX130 Double eccentric butterfly valve DN 150 PN10/16/ANSI150 WCB INCONEL 718 ATEX
Product number
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151-1311-14
Double-eccentric butterfly valve DN 150Double offset type, WAFER type for installation between flanges PN10, PN16, ANSI 150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate AA, Actuator connection: ISO 5211, Body: ASTM A216 WCB, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: INCONEL 718
(Metal-seated), Packing: Graphite, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +360°C(*), Operation: Gearbox, TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc. (*) It is recommended to install heat sink from 225°C.
Nominal width :
DN150 - 6'' inch
Design :
Wafer, double offset
Face to Face length :
EN558-1, Series 20
Sleeve material :
INCONEL 718
Body:
ASTM A216 WCB
Disc :
Stainless steel
Price
€846.40
€1,007.22 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
AX130 Double eccentric butterfly valve DN 200 PN10/16/ANSI150 WCB INCONEL 718 ATEX
Product number
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151-1311-16
Double-eccentric butterfly valve DN 200Double offset type, WAFER type for installation between flanges PN10, PN16, ANSI 150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate AA, Actuator connection: ISO 5211, Body: ASTM A216 WCB, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: INCONEL 718 (Metal-seated), Packing: Graphite, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +360°C(*), Operation: Gearbox, TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc. (*) It is recommended to install heat sink from 225°C.
Nominal width :
DN200 - 8'' inch
Design :
Wafer, double offset
Face to Face length :
EN558-1, Series 20
Sleeve material :
INCONEL 718
Body:
ASTM A216 WCB
Disc :
Stainless steel
Price
€1,345.60
€1,601.26 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
AX130 Double eccentric butterfly valve DN 250 PN10/16/ANSI150 WCB INCONEL 718 ATEX
Product number
Copy to clipboard
151-1311-18
Double-eccentric butterfly valve DN 250Double offset type, WAFER type for installation between flanges PN10, PN16, ANSI 150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate AA, Actuator connection: ISO 5211, Body: ASTM A216 WCB, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: INCONEL 718
(Metal-seated), Packing: Graphite, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +360°C(*), Operation: Gearbox, TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc. (*) It is recommended to install heat sink from 225°C.
Nominal width :
DN250 - 10'' inch
Design :
Wafer, double offset
Face to Face length :
EN558-1, Series 20
Sleeve material :
INCONEL 718
Body:
ASTM A216 WCB
Disc :
Stainless steel
Price
€1,870.40
€2,225.78 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
AX130 Double eccentric butterfly valve DN 300 PN10/16/ANSI150 WCB INCONEL 718 ATEX
Product number
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151-1311-20
Double-eccentric butterfly valve DN 300Double offset type, WAFER type for installation between flanges PN10, PN16, ANSI 150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate AA, Actuator connection: ISO 5211, Body: ASTM A216 WCB, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: INCONEL 718
(Metal-seated), Packing: Graphite, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +360°C(*), Operation: Gearbox, TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc. (*) It is recommended to install a heat sink from 225°C.
Nominal width :
DN300 - 12'' inch
Design :
Wafer, double offset
Face to Face length :
EN558-1, Series 20
Sleeve material :
INCONEL 718
Body:
ASTM A216 WCB
Disc :
Stainless steel
Price
€2,491.20
€2,964.53 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
AX130 Double-eccentric butterfly valve DN 50 PN10/16/ANSI150 stainless-steel RPTFE ATEX
Product number
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151-1320-09
Double-eccentric butterfly valve DN 50 stainless-steelDouble-offset design, WAFER type for installation between flanges PN10, PN16, ANSI Class150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate A, Actuator connection: ISO 5211, Body: ASTM A351 CF8M, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: RPTFE (PTFE + 25% glass fiber) , Packing: PTFE, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +220°C, Operation: hand lever (SS316), TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc.
Nominal width :
DN50 - 2'' inch
Design :
Wafer, double offset
Sleeve material :
RPTFE
Face to Face length :
EN558-1, Series 20
Disc :
Stainless steel
Body:
Stainless Steel
Price
€404.80
€481.71 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
AX130 Double-eccentric butterfly valve DN 65 PN10/16/ANSI150 stainless-steel RPTFE ATEX
Product number
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151-1320-10
Double-eccentric butterfly valve DN 65 stainless-steelDouble-offset design, WAFER type for installation between flanges PN10, PN16, ANSI Class150, Face to face acc. to EN 558-1, Line 20; ISO 5752 Series 20, Tightness acc. to Class VI / ISO 5208, Rate A, Actuator connection: ISO 5211, Body: ASTM A351 CF8M, Disc: ASTM A351 CF8M, Shaft: ASTM A276 F316, Seat: RPTFE (PTFE + 25% glass fiber) , Packing: PTFE, Max. working pressure: ≤25 bar, Temp. (min./max.): -29°C to +220°C, Operation: hand lever (SS316), TA Luft approval (ISO 15848), ATEX acc. to 2014/34/EU - Atex II 2GDc.
Nominal width :
DN65 - 2 1/2'' inch
Design :
Wafer, double offset
Sleeve material :
RPTFE
Face to Face length :
EN558-1, Series 20
Disc :
Stainless steel
Body:
Stainless Steel
Price
€488.00
€580.72 incl. VAT
Delivery Time:
1-2 weeks
Available:
In Stock
Why Stainless Steel?
Stainless steel is more than a material choice — it’s a promise of corrosion resistance and robust performance. In industries where aggressive media, steam, or wide temperature swings are everyday challenges, a stainless valve maintains its integrity and keeps your process running. Combined with premium seat materials like RPTFE or metal seats such as INCONEL 718, it delivers reliability where others fall short.
Technical Features at a Glance
- Face-to-face length: EN 558-1, Series 20
- Pressure Ratings: PN10/16 and ANSI Class 150
- Tightness: Class VI per ISO 5208 :contentReference[oaicite:8]{index=8}
- Temperature Range: -29 °C to +220 °C (higher for metal seats) :contentReference[oaicite:9]{index=9}
- Certifications: ATEX and TA Luft
- Actuation Options: Manual, pneumatic, electric
Where It Excels
This valve shines in environments like chemical processing, water treatment, power generation, and beyond — basically anywhere a reliable shut-off and control solution is critical. What makes it particularly effective is the reduction of seal wear thanks to the double offset design. Less friction means fewer maintenance cycles and more uptime for your systems.
Wrap-Up
For engineering teams and procurement specialists seeking a durable, high-performance solution, the double eccentric stainless steel butterfly valve offers lasting value. Its thoughtful design, certified performance, and adaptability make it a smart choice across industries and geographies.
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