GEMÜ butterfly valves

Butterfly valves in plastic and metal

GEMÜ butterfly valves

  • Areas of application and industrial sectors
  • Valve type
  • Technical data

Butterfly valves: Areas of application and industrial sectors

GEMÜ butterfly valves are primarily used in industrial applications and the chemical industry, as well as the fields of water supply and water/waste water treatment. The concentric and single-eccentric designs are available as standard. However, the double-eccentric and triple-eccentric shut-off valves are also available for projects on request. Use of matched control components such as position indicators, positioners and process controllers allows GEMÜ butterfly valves to also be used in control circuits.

Butterfly valves: Valve type

The butterfly valve comprises a ring-shaped body in which a ring-shaped elastomer seat/liner is inserted. A washer guided through a shaft swings through a 90° rotary movement into the gasket. Depending on the version and nominal size, this enables operating pressures of up to 25 bar and temperatures up to 210 °C to be shut off. Most often, these valves are used for mechanically pure liquids, but can also be used in the right material combinations without posing any problems for slightly abrasive media or gases and vapours. 

Due to the large variety of materials, the butterfly valve is universally compatible, for example with countless industrial applications, water/drinking water treatment, coastal and offshore sectors. The butterfly valve is also often a cost effective alternative to other valve types, where there are no stringent requirements regarding switching cycles, hygiene or control accuracy. In large nominal sizes of greater than DN 150, it is often the only shut-off valve that is still viable. For more stringent demands with respect to chemical resistance or hygiene, there is the possibility of using a butterfly valve with a seat made of PTFE or TFM. In combination with a PFA encapsulated stainless steel disc, it is suitable for highly aggressive media in the chemical or semiconductor industry; and with a polished stainless steel disc, it can also be used in the foodstuff or pharmaceutical sector.

For all the valve types specified, GEMÜ offers numerous customized accessories for automation and process optimization. Electr. position indicator, position and process controllers, sensor systems and measurement devices, are easily and quickly fitted, adjusted and integrated in the existing process control technology. 

Butterfly valves: Technical data

OperationManual, pneumatic, motorized
ConnectionsUnion ends, threaded sockets, butt weld spigots
Operating pressure0 - 16 bar
Body materialsMetal: Aluminium, stainless steel, cast iron, brass, SG iron, cast steel
Plastic: PES, PP, PVC
Media temperatur-60 - 210 °C
Nominal sizesDN 15 - 1600
GEMÜ 410
410
  • Media temperature :0 to 60 °C
  • Ambient temperature:-10 to 60 °C
  • Operating pressure :0 to 6 bar
  • Nominal sizes:DN 15 to 50
  • Connection types:Union end
  • Connection standards:BS | DIN
  • Housing materials:PVC-U, grey
  • Liner materials:EPDM | FKM
  • Disc materials:PVDF
  • Conformities:EAC
GEMÜ 411
411
  • Media temperature :-20 to 120 °C
  • Ambient temperature:-10 to 60 °C
  • Operating pressure :0 to 10 bar
  • Nominal sizes:DN 15 to 50
  • Connection types:Clamp | Spigot | Threaded connection
  • Connection standards:ASME | DIN | EN | ISO | SMS
  • Housing materials:1.4408, investment casting material | CW614N, brass | CW617N, brass
  • Liner materials:EPDM | FKM | Silicone
  • Disc materials:1.4408, investment casting material | CW614N, brass | CW617N, brass
  • Conformities:ATEX | EAC | FDA
GEMÜ 415
415
  • Media temperature :-20 to 120 °C
  • Ambient temperature:0 to 60 °C
  • Operating pressure :0 to 10 bar
  • Nominal sizes:DN 15 to 50
  • Connection types:Clamp | Spigot | Threaded connection
  • Connection standards:ASME | DIN | EN | ISO | SMS
  • Housing materials:1.4408, investment casting material | CW614N, brass | CW617N, brass
  • Liner materials:EPDM | FKM | Silicone
  • Disc materials:1.4408, investment casting material | CW614N, brass | CW617N, brass
  • Conformities:ATEX | EAC | FDA
GEMÜ 417
417
  • Media temperature :0 to 60 °C
  • Ambient temperature:-10 to 60 °C
  • Operating pressure :0 to 6 bar
  • Nominal sizes:DN 15 to 50
  • Connection types:Union end
  • Connection standards:BS | DIN
  • Housing materials:PVC-U, grey
  • Liner materials:EPDM | FKM
  • Disc materials:PVDF
  • Conformities:EAC
GEMÜ 423
423
  • Media temperature :0 to 60 °C
  • Ambient temperature:-10 to 60 °C
  • Operating pressure :0 to 6 bar
  • Nominal sizes:DN 15 to 50
  • Connection types:Union end
  • Connection standards:BS | DIN
  • Housing materials:PVC-U, grey
  • Liner materials:EPDM | FKM
  • Disc materials:PVDF
  • Supply voltage:12 - 24 V AC/DC | 12 V DC | 24 - 240 V AC/DC | 24 V AC, 50/60 Hz | 24 V DC
  • Operating time 90°:4 to 100 s
  • Protection class:IP 65, 66, 67, 68
  • Conformities:CSA | EAC
GEMÜ 428
428
  • Media temperature :-20 to 120 °C
  • Ambient temperature:-10 to 60 °C
  • Operating pressure :0 to 10 bar
  • Nominal sizes:DN 15 to 50
  • Connection types:Clamp | Spigot | Threaded connection
  • Connection standards:ASME | DIN | EN | ISO | SMS
  • Housing materials:1.4408, investment casting material | CW614N, brass | CW617N, brass
  • Liner materials:EPDM | FKM | Silicone
  • Disc materials:1.4408, investment casting material | CW614N, brass | CW617N, brass
  • Supply voltage:12 V AC, 50/60 Hz | 12 V DC | 24 V AC, 50/60 Hz | 24 V DC
  • Operating time 90°:4 to 100 s
  • Protection class:IP 65, 66, 67, 68
  • Conformities:ATEX | EAC | FDA
GEMÜ 480
480
  • Media temperature:-10 to 150 °C
  • Ambient temperature:-10 to 70 °C
  • Operating pressure :0 to 16 bar
  • Nominal sizes:DN 25 to 600
  • Body configurations:Lug | U section | Wafer
  • Connection standards:AS | ASME | BS | DIN | EN | ISO | JIS
  • Body materials:EN-GJS-400-15, SG iron material
  • Body coating:Epoxy
  • Liner materials:EPDM | FKM | NBR | SBR, abrasion resistant
  • Disc materials:1.4408, investment casting material | 1.4408, polished investment casting material | EN-GJS-400-15, SG iron material
  • Disc coating:EPDM | Epoxy | Halar® | Rilsan®
  • Conformities:ACS | ATEX | Belgaqua | DNV GL | DVGW Drinking water | DVGW Gas | EAC | FDA | WRAS
GEMÜ 481
481
  • Media temperature:-10 to 150 °C
  • Ambient temperature:-10 to 70 °C
  • Operating pressure :0 to 16 bar
  • Nominal sizes:DN 25 to 600
  • Body configurations:Lug | U section | Wafer
  • Connection standards:AS | ASME | BS | DIN | EN | ISO | JIS
  • Body materials:EN-GJS-400-15, SG iron material
  • Body coating:Epoxy
  • Liner materials:EPDM | FKM | NBR | SBR, abrasion resistant
  • Disc materials:1.4408, investment casting material | 1.4408, polished investment casting material | EN-GJS-400-15, SG iron material
  • Disc coating:EPDM | Epoxy | Halar® | Rilsan®
  • Conformities:ACS | ATEX | Belgaqua | DNV GL | DVGW Drinking water | DVGW Gas | EAC | FDA | WRAS
GEMÜ 487
487
  • Media temperature:-10 to 150 °C
  • Ambient temperature:-10 to 70 °C
  • Operating pressure :0 to 16 bar
  • Nominal sizes:DN 25 to 600
  • Body configurations:Lug | U section | Wafer
  • Connection standards:AS | ASME | BS | DIN | EN | ISO | JIS
  • Body materials:EN-GJS-400-15, SG iron material
  • Body coating:Epoxy
  • Liner materials:EPDM | FKM | NBR | SBR, abrasion resistant
  • Disc materials:1.4408, investment casting material | 1.4408, polished investment casting material | EN-GJS-400-15, SG iron material
  • Disc coating:EPDM | Epoxy | Halar® | Rilsan®
  • Conformities:ACS | ATEX | Belgaqua | DNV GL | DVGW Drinking water | DVGW Gas | EAC | FDA | WRAS
GEMÜ 488
488
  • Media temperature :-10 to 150 °C
  • Ambient temperature:-10 to 70 °C
  • Operating pressure :0 to 16 bar
  • Nominal sizes:DN 25 to 600
  • Body configurations:Lug | U section | Wafer
  • Connection standards:AS | ASME | BS | DIN | EN | ISO | JIS
  • Body materials:EN-GJS-400-15, SG iron material
  • Body coating:Epoxy
  • Liner materials:EPDM | FKM | NBR | SBR, abrasion resistant
  • Disc materials:1.4408, investment casting material | 1.4408, polished investment casting material | EN-GJS-400-15, SG iron material
  • Disc coating:EPDM | Epoxy | Halar® | Rilsan®
  • Supply voltage:100 - 120 V AC, 50/60 Hz | 12 - 24 V AC/DC | 220 - 240 V AC, 50/60 Hz | 380 - 480 V AC, 50/60 Hz
  • Operating time 90°:4 to 100 s
  • Protection class:IP 65, 66, 67, 68
  • Conformities:ACS | ATEX | Belgaqua | CSA | DNV GL | DVGW Drinking water | DVGW Gas | EAC | FDA | WRAS
GEMÜ 490
490
  • Media temperature:-20 to 200 °C
  • Ambient temperature:-20 to 95 °C
  • Operating pressure :0 to 10 bar
  • Nominal sizes:DN 25 to 1200
  • Body configurations:Lug | Wafer
  • Connection standards:AS | ASME | DIN | EN | ISO | JIS
  • Body materials:1.4404, block material | EN-GJS-400-18-LT, SG iron material | S355J2 + N, cast steel material | VE Duroplast, reinforced
  • Body coating:Epoxy
  • Liner materials:PTFE / silicone | PTFE TFM™/EPDM | PTFE TFM™/FKM | PTFE TFM™/silicone | PTFE/EPDM | PTFE/FKM
  • Disc materials:1.4404 (316L), forged material | 1.4469, Duplex cast steel material | 2.4602 (alloy 22), block material | 3.7035, titan
  • Disc coating:PFA
  • Conformities:ATEX | EAC | FDA | SIL | TA Luft (German Clean Air Act) | USP
GEMÜ 491
491
  • Media temperature:-20 to 200 °C
  • Ambient temperature:-20 to 95 °C
  • Operating pressure :0 to 10 bar
  • Nominal sizes:DN 25 to 600
  • Body configurations:Lug | Wafer
  • Connection standards:AS | ASME | DIN | EN | ISO | JIS
  • Body materials:1.4404, block material | EN-GJS-400-18-LT, SG iron material | S355J2 + N, cast steel material | VE Duroplast, reinforced
  • Body coating:Epoxy
  • Liner materials:PTFE / silicone | PTFE TFM™/EPDM | PTFE TFM™/FKM | PTFE TFM™/silicone | PTFE/EPDM | PTFE/FKM
  • Disc materials:1.4404 (316L), forged material | 1.4469, Duplex cast steel material | 2.4602 (alloy 22), block material | 3.7035, titan
  • Disc coating:PFA
  • Conformities:ATEX | EAC | FDA | SIL | TA Luft (German Clean Air Act) | USP
GEMÜ 497
497
  • Media temperature:-20 to 200 °C
  • Ambient temperature:-20 to 95 °C
  • Operating pressure :0 to 10 bar
  • Nominal sizes:DN 25 to 600
  • Body configurations:Lug | Wafer
  • Connection standards:AS | ASME | DIN | EN | ISO | JIS
  • Body materials:1.4404, block material | EN-GJS-400-18-LT, SG iron material | S355J2 + N, cast steel material | VE Duroplast, reinforced
  • Body coating:Epoxy
  • Liner materials:PTFE / silicone | PTFE TFM™/EPDM | PTFE TFM™/FKM | PTFE TFM™/silicone | PTFE/EPDM | PTFE/FKM
  • Disc materials:1.4404 (316L), forged material | 1.4469, Duplex cast steel material | 2.4602 (alloy 22), block material | 3.7035, titan
  • Disc coating:PFA
  • Conformities:ATEX | EAC | FDA | SIL | TA Luft (German Clean Air Act) | USP
GEMÜ 498
498
  • Media temperature :-20 to 200 °C
  • Ambient temperature:-20 to 95 °C
  • Operating pressure :0 to 10 bar
  • Nominal sizes:DN 25 to 250
  • Body configurations:Lug | Wafer
  • Connection standards:AS | ASME | DIN | EN | ISO | JIS
  • Body materials:1.4404, block material | EN-GJS-400-18-LT, SG iron material | S355J2 + N, cast steel material | VE Duroplast, reinforced
  • Body coating:Epoxy
  • Liner materials:PTFE / silicone | PTFE TFM™/EPDM | PTFE TFM™/FKM | PTFE TFM™/silicone | PTFE/EPDM | PTFE/FKM
  • Disc materials:1.4404 (316L), forged material | 1.4469, Duplex cast steel material | 2.4602 (alloy 22), block material | 3.7035, titan
  • Disc coating:PFA
  • Supply voltage:24 - 240 V AC/DC | 24 V AC, 50/60 Hz | 24 V DC
  • Operating time 90°:4 to 100 s
  • Protection class:IP 65, 66, 67, 68
  • Conformities:ATEX | EAC | FDA | SIL | TA Luft (German Clean Air Act) | USP
GEMÜ C480
C480
  • Media temperature: -10 to 70 °C
  • Ambient temperature: -20 to 95 °C
  • Operating pressure*: 3 to 16 bar
  • Nominal sizes*: DN 700 to 1600
  • Installation lengths: ISO 5752/20 | EN 558-1/20 | API 609 category A
  • Body configurations: Lug | U section | Wafer
  • Connection types: Flange
  • Connection standards:
  • Housing materials: EN-GJS-400-15
  • Liner materials:
  • Disc materials:
  • Conformities: ACS | EAC
GEMÜ C481
C481
  • Media temperature: -10 to 70 °C
  • Ambient temperature: -20 to 95 °C
  • Operating pressure*: 3 to 16 bar
  • Nominal sizes*: DN 700 to 1600
  • Installation lengths: ISO 5752/20 | EN 558-1/20 | API 609 category A
  • Body configurations: Lug | U section | Wafer
  • Connection types: Flange
  • Connection standards:
  • Housing materials: EN-GJS-400-15
  • Liner materials:
  • Disc materials:
  • Conformities: ACS | EAC
GEMÜ C487
C487
  • Media temperature: -10 to 70 °C
  • Ambient temperature: -20 to 95 °C
  • Operating pressure*: 3 to 16 bar
  • Nominal sizes*: DN 700 to 1600
  • Installation lengths: ISO 5752/20 | EN 558-1/20 | API 609 category A
  • Body configurations: Lug | U section | Wafer
  • Connection types: Flange
  • Connection standards:
  • Housing materials: EN-GJS-400-15
  • Liner materials:
  • Disc materials:
  • Conformities: ACS | EAC
GEMÜ D450
D450
  • Media temperature :5 to 90 °C
  • Ambient temperature:-20 to 60 °C
  • Operating pressure :0 to 10 bar
  • Nominal sizes:DN 50 to 300
  • Body configurations:Wafer
  • Connection standards:ANSI | EN | JIS
  • Body materials:PP, reinforced
  • Liner materials:EPDM | FKM
  • Disc materials:PP-H | PVC-C | PVC-U
  • Conformities:EAC
GEMÜ D451
D451
  • Media temperature :5 to 90 °C
  • Ambient temperature:-20 to 60 °C
  • Operating pressure :0 to 10 bar
  • Nominal sizes:DN 50 to 300
  • Body configurations:Wafer
  • Connection standards:ANSI | EN | JIS
  • Body materials:PP, reinforced
  • Liner materials:EPDM | FKM
  • Disc materials:PP-H | PVC-C | PVC-U
  • Conformities:EAC
GEMÜ D457
D457
  • Media temperature :5 to 90 °C
  • Ambient temperature:-20 to 60 °C
  • Operating pressure :0 to 10 bar
  • Nominal sizes:DN 50 to 300
  • Body configurations:Wafer
  • Connection standards:ANSI | EN | JIS
  • Body materials:PP, reinforced
  • Liner materials:EPDM | FKM
  • Disc materials:PP-H | PVC-C | PVC-U
  • Conformities:EAC
GEMÜ D458
D458
  • Media temperature :5 to 90 °C
  • Ambient temperature:-20 to 60 °C
  • Operating pressure :0 to 10 bar
  • Nominal sizes:DN 50 to 300
  • Body configurations:Wafer
  • Connection standards:ANSI | EN | JIS
  • Body materials:PP, reinforced
  • Liner materials:EPDM | FKM
  • Disc materials:PP-H | PVC-C | PVC-U
  • Supply voltage:12 - 24 V AC/DC | 24 V AC/DC | 24 V DC | 85 - 240 V AC/DC
  • Operating time 90°:13 to 58 s
  • Protection class:IP 65, 67
  • Conformities:CSA | EAC
GEMÜ D480
D480
  • Media temperature:-60 to 210 °C
  • Ambient temperature:-20 to 70 °C
  • Operating pressure :0 to 16 bar
  • Nominal sizes:DN 25 to 1600
  • Body configurations:Lug | U section | Wafer
  • Connection standards:AS | ASME | AWWA | BS | DIN | EN | ISO | JIS
  • Body materials:1.4408, cast stainless steel material | EN-AC-46100, aluminium casting material | EN-AC-47100, aluminium casting material | EN-GJS-400-15, SG iron material | EN-GJS-400-18-LT, SG iron material | S275JR, cast steel material
  • Body coating:Epoxy
  • Liner materials:CR | CSM (Hypalon®) | ECO | EPDM | NBR | SBR, abrasion resistant | Silicone
  • Disc materials:1.4408, investment casting material | 1.4469, Duplex cast steel material | 1.4539, forged material | 2.0975, bronze casting material | 2.4602 (alloy 22), block material | EN-GJS-400-15, SG iron material
  • Disc coating:EPDM | Epoxy | Halar® | NBR | Rilsan® | SBR
  • Conformities:ACS | ATEX | DNV GL | DVGW Drinking water | DVGW Gas | EAC | FDA | WRAS
GEMÜ D481
D481
  • Media temperature:-60 to 210 °C
  • Ambient temperature:-20 to 70 °C
  • Operating pressure :0 to 16 bar
  • Nominal sizes:DN 25 to 600
  • Body configurations:Lug | U section | Wafer
  • Connection standards:AS | ASME | AWWA | BS | DIN | EN | ISO | JIS
  • Body materials:1.4408, cast stainless steel material | EN-AC-46100, aluminium casting material | EN-AC-47100, aluminium casting material | EN-GJS-400-15, SG iron material | EN-GJS-400-18-LT, SG iron material | S275JR, cast steel material
  • Body coating:Epoxy
  • Liner materials:CR | CSM (Hypalon®) | ECO | EPDM | NBR | SBR, abrasion resistant | Silicone
  • Disc materials:1.4408, investment casting material | 1.4469, Duplex cast steel material | 1.4539, forged material | 2.0975, bronze casting material | 2.4602 (alloy 22), block material | EN-GJS-400-15, SG iron material
  • Disc coating:EPDM | Epoxy | Halar® | NBR | Rilsan® | SBR
  • Conformities:ACS | ATEX | DNV GL | DVGW Drinking water | DVGW Gas | EAC | FDA | WRAS
GEMÜ D487
D487
  • Media temperature:-60 to 210 °C
  • Ambient temperature:-20 to 70 °C
  • Operating pressure :0 to 16 bar
  • Nominal sizes:DN 25 to 1600
  • Body configurations:Lug | U section | Wafer
  • Connection standards:AS | ASME | AWWA | BS | DIN | EN | ISO | JIS
  • Body materials:1.4408, cast stainless steel material | EN-AC-46100, aluminium casting material | EN-AC-47100, aluminium casting material | EN-GJS-400-15, SG iron material | EN-GJS-400-18-LT, SG iron material | S275JR, cast steel material
  • Body coating:Epoxy
  • Liner materials:CR | CSM (Hypalon®) | ECO | EPDM | NBR | SBR, abrasion resistant | Silicone
  • Disc materials:1.4408, investment casting material | 1.4469, Duplex cast steel material | 1.4539, forged material | 2.0975, bronze casting material | 2.4602 (alloy 22), block material | EN-GJS-400-15, SG iron material
  • Disc coating:EPDM | Epoxy | Halar® | NBR | Rilsan® | SBR
  • Conformities:ACS | DNV GL | DVGW Drinking water | DVGW Gas | EAC | FDA | WRAS
GEMÜ D488
D488
  • Media temperature :-60 to 210 °C
  • Ambient temperature:-20 to 70 °C
  • Operating pressure :0 to 16 bar
  • Nominal sizes:DN 25 to 1600
  • Body configurations:Lug | U section | Wafer
  • Connection standards:AS | ASME | AWWA | BS | DIN | EN | ISO | JIS
  • Body materials:1.4408, cast stainless steel material | EN-AC-46100, aluminium casting material | EN-AC-47100, aluminium casting material | EN-GJS-400-15, SG iron material | EN-GJS-400-18-LT, SG iron material | S275JR, cast steel material
  • Body coating:Epoxy
  • Liner materials:CR | CSM (Hypalon®) | ECO | EPDM | NBR | SBR, abrasion resistant | Silicone
  • Disc materials:1.4408, investment casting material | 1.4469, Duplex cast steel material | 1.4539, forged material | 2.0975, bronze casting material | 2.4602 (alloy 22), block material | EN-GJS-400-15, SG iron material
  • Disc coating:EPDM | Epoxy | Halar® | NBR | Rilsan® | SBR
  • Supply voltage:100 - 120 V AC, 50/60 Hz | 12 - 24 V AC/DC | 220 - 240 V AC, 50/60 Hz | 380 - 480 V AC, 50/60 Hz
  • Operating time 90°:4 to 100 s
  • Protection class:IP 65, 66, 67, 68
  • Conformities:ACS | ATEX | CSA | DNV GL | DVGW Drinking water | DVGW Gas | EAC | FDA | WRAS
GEMÜ K410
K410
  • Media temperature :0 to 60 °C
  • Ambient temperature:-10 to 60 °C
  • Operating pressure :0 to 6 bar
  • Nominal sizes:DN 15 to 50
  • Connection types:Union end
  • Connection standards:BS | DIN
  • Housing materials:PVC-U, grey
  • Liner materials:EPDM | FKM | Silicone
  • Disc materials:PVDF
  • Conformities:EAC
GEMÜ K415
K415
  • Media temperature :-20 to 160 °C
  • Ambient temperature:-10 to 60 °C
  • Operating pressure :0 to 10 bar
  • Nominal sizes:DN 15 to 50
  • Connection types:Clamp | Spigot | Threaded connection
  • Connection standards:ASME | DIN | EN | ISO | SMS
  • Housing materials:1.4408 (CF8M), investment casting material | CW614N, brass | CW617N, brass
  • Liner materials:EPDM | FKM | Silicone
  • Disc materials:1.4408, investment casting material | CW614N, brass | CW617N, brass
  • Conformities:ATEX | EAC | FDA
GEMÜ R470
R470
  • Media temperature :-60 to 230 °C
  • Ambient temperature:-20 to 70 °C
  • Operating pressure :0 to 40 bar
  • Nominal sizes:DN 50 to 600
  • Body configurations:Wafer
  • Connection standards:ASME | ISO
  • Body materials:1.0619 (WCB), cast steel material with CDP coating | 1.4408 (CF8M), investment casting material
  • Liner materials:PTFE TFM™
  • Disc materials:1.4408
  • Conformities:ATEX | EAC | FDA | TA Luft (German Clean Air Act)
GEMÜ R471
R471
  • Media temperature :-60 to 230 °C
  • Ambient temperature:-20 to 70 °C
  • Operating pressure :0 to 40 bar
  • Nominal sizes:DN 50 to 400
  • Body configurations:Wafer
  • Connection standards:ASME | ISO
  • Body materials:1.0619 (WCB), cast steel material with CDP coating | 1.4408 (CF8M), investment casting material
  • Liner materials:PTFE TFM™
  • Disc materials:1.4408
  • Conformities:ATEX | EAC | FDA | TA Luft (German Clean Air Act)
GEMÜ R477
R477
  • Media temperature :-60 to 230 °C
  • Ambient temperature:-20 to 70 °C
  • Operating pressure :0 to 40 bar
  • Nominal sizes:DN 50 to 400
  • Body configurations:Wafer
  • Connection standards:ASME | ISO
  • Body materials:1.0619 (WCB), cast steel material with CDP coating | 1.4408 (CF8M), investment casting material
  • Liner materials:PTFE TFM™
  • Disc materials:1.4408
  • Conformities:ATEX | EAC | FDA | TA Luft (German Clean Air Act)
GEMÜ R478
R478
  • Media temperature :-60 to 230 °C
  • Ambient temperature:-20 to 70 °C
  • Operating pressure :0 to 40 bar
  • Nominal sizes:DN 50 to 300
  • Body configurations:Wafer
  • Connection standards:ASME | ISO
  • Body materials:1.0619 (WCB), cast steel material with CDP coating | 1.4408 (CF8M), investment casting material
  • Liner materials:PTFE TFM™
  • Disc materials:1.4408
  • Supply voltage:120 V AC, 50 Hz | 120 V AC, 60 Hz | 230 V AC, 50 Hz | 230 V AC, 60 Hz | 24 V DC | 380 V AC, 50 Hz | 400 V AC, 50 Hz | 440 V AC, 60 Hz | 460 V AC, 60 Hz | 480 V AC, 60 Hz
  • Operating time 90°:13 to 35 s
  • Protection class:IP68
  • Conformities:ATEX | EAC | FDA | TA Luft (German Clean Air Act)
GEMÜ R480
R480
  • Media temperature:-10 to 160 °C
  • Ambient temperature:-10 to 70 °C
  • Operating pressure :0 to 16 bar
  • Nominal sizes:DN 50 to 300
  • Body configurations:Lug | Wafer
  • Connection standards:AS | ASME | BS | DIN | EN | ISO | JIS
  • Body materials:EN-GJS-400-15, SG iron material | EN-GJS-400-18-LT, SG iron material
  • Body coating:Epoxy
  • Liner materials:EPDM | FKM | NBR | SBR, abrasion resistant | Silicone
  • Disc materials:1.4408, investment casting material | 1.4408, polished investment casting material | 1.4469, Duplex cast steel material | EN-GJS-400-15, SG iron material
  • Disc coating:Epoxy | Halar® | Rilsan®
  • Conformities:ACS | ATEX | Belgaqua | DNV GL | DVGW Gas | EAC | FDA | Functional safety | NSF | Oxygen | Regulation (EC) No. 1935/2004 | TA Luft (German Clean Air Act) | WRAS
GEMÜ R481
R481
  • Media temperature:-10 to 160 °C
  • Ambient temperature:-10 to 70 °C
  • Operating pressure :0 to 16 bar
  • Nominal sizes:DN 50 to 300
  • Body configurations:Lug | Wafer
  • Connection standards:AS | ASME | BS | DIN | EN | ISO | JIS
  • Body materials:EN-GJS-400-15, SG iron material | EN-GJS-400-18-LT, SG iron material
  • Body coating:Epoxy
  • Liner materials:EPDM | FKM | NBR | SBR, abrasion resistant | Silicone
  • Disc materials:1.4408, investment casting material | 1.4408, polished investment casting material | EN-GJS-400-15, SG iron material
  • Disc coating:Epoxy | Halar® | Rilsan®
  • Conformities:ACS | ATEX | Belgaqua | DNV GL | DVGW Gas | EAC | FDA | Functional safety | NSF | Oxygen | Regulation (EC) No. 1935/2004 | TA Luft (German Clean Air Act) | WRAS
GEMÜ R487
R487
  • Media temperature:-10 to 160 °C
  • Ambient temperature:-10 to 70 °C
  • Operating pressure :0 to 16 bar
  • Nominal sizes:DN 50 to 300
  • Body configurations:Lug | Wafer
  • Connection standards:AS | ASME | BS | DIN | EN | ISO | JIS
  • Body materials:EN-GJS-400-15, SG iron material | EN-GJS-400-18-LT, SG iron material
  • Body coating:Epoxy
  • Liner materials:EPDM | FKM | NBR | SBR, abrasion resistant | Silicone
  • Disc materials:1.4408, investment casting material | 1.4408, polished investment casting material | EN-GJS-400-15, SG iron material
  • Disc coating:Epoxy | Halar® | Rilsan®
  • Conformities:ACS | ATEX | Belgaqua | DNV GL | DVGW Gas | EAC | FDA | Functional safety | NSF | Oxygen | Regulation (EC) No. 1935/2004 | TA Luft (German Clean Air Act) | WRAS
GEMÜ R488
R488
  • Media temperature :-10 to 160 °C
  • Ambient temperature:-10 to 70 °C
  • Operating pressure :0 to 16 bar
  • Nominal sizes:DN 50 to 300
  • Body configurations:Lug | Wafer
  • Connection standards:AS | ASME | BS | DIN | EN | ISO | JIS
  • Body materials:EN-GJS-400-15, SG iron material | EN-GJS-400-18-LT, SG iron material
  • Body coating:Epoxy
  • Liner materials:EPDM | FKM | NBR | SBR, abrasion resistant | Silicone
  • Disc materials:1.4408, investment casting material | 1.4408, polished investment casting material | EN-GJS-400-15, SG iron material
  • Disc coating:Epoxy | Halar® | Rilsan®
  • Supply voltage:100 - 120 V AC, 50/60 Hz | 12 - 24 V AC/DC | 220 - 240 V AC, 50/60 Hz | 380 - 480 V AC, 50/60 Hz
  • Operating time 90°:4 to 100 s
  • Protection class:IP 65, 66, 67, 68
  • Conformities:ACS | ATEX | Belgaqua | DNV GL | DVGW Gas | EAC | FDA | Functional safety | NSF | Oxygen | Regulation (EC) No. 1935/2004 | TA Luft (German Clean Air Act) | WRAS

Uranium removal and partial deionization at the Trollmühle Waterworks

GEMÜ butterfl y valves at the Trollmühle Waterworks - Uranium removal and partial deionization using Uranex® and Carix® procedures
Currently, the waterworks at the Trollmühle water supply authority in Windesheim near Bingen am Rhein supply approximately 43,000 people in 14,000 households with 2.2 million m³ drinking water per year. At peak times, this means a daily dispensing volume of up to 8500 m³.
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