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- Valve designs
- Butterfly valves
- Butterfly valve 410
- Butterfly valve 411
- Butterfly valve 415
- Butterfly valve 417
- Butterfly valve 423
- Butterfly valve 428
- Butterfly valve D450
- Butterfly valve D451
- Butterfly valve D457
- Butterfly valve D458
- Butterfly valve 480
- Butterfly valve 481
- Butterfly valve 487
- Butterfly valve 488
- Butterfly valve 490
- Butterfly valve 491
- Butterfly Valve 497
- Butterfly valve 498
- Butterfly valve R470
- Butterfly valve R471
- Butterfly valve R477
- Butterfly valve R478
- Butterfly valve R480
- Butterfly valve R481
- Butterfly valve R487
- Butterfly valve R488
- Butterfly valve C480
- Butterfly valve C481
- Butterfly valve C487
- Butterfly valve C488
- Butterfly valve D480
- Butterfly valve D481
- Butterfly valve D487
- Butterfly valve D488
- Butterfly valve K410
- Butterfly valve K415
- CONEXO - Valves with RFID
- Pressure control valves
- Fittings & tubes
- Fittings
- Fittings FCP
- Fittings FFA
- Fittings FCPM
- Fittings FEPM
- Fittings FFBT
- Fittings FFC
- Fittings FFE
- Fittings FLAD
- Fittings FLC
- Fittings FMC
- Fittings FME
- Fittings FMEJ
- Fittings FMBT
- Fittings FMES
- Fittings FMCJ
- Fittings FMRT
- Fittings FPM
- Fittings FPMR
- Fittings FPMX
- Fittings FPP
- Fittings FRE
- Fittings FRSE
- Fittings FRST
- Fittings FRT
- Fittings FSA
- Fittings FSE
- Fittings FSMC
- Fittings FSR
- Fittings FSRE
- Fittings FSSR
- Fittings FSU
- Fittings FSUT
- Fittings FUE
- Fittings FUES
- Fittings FUSE
- Fittings FUST
- Fittings FUT
- Fittings FWCA
- Fittings FWEA
- Fittings FWES
- Fittings FEFA
- Fittings FWHE
- Fittings FWMA
- Fittings FWRE
- Fittings FWRT
- Fittings FWSA
- Fittings FWSR
- Fittings FWU
- Fittings FWUE
- Fittings FWUT
- Fittings FWX
- Tubes
- Fittings
- Ball valves
- Product overview
- Ball valve 710
- Ball valve 717
- Ball valve 723
- Ball valve 761
- Ball valve 762
- Ball valve S717
- Ball valve B20
- Ball valve B22
- Ball valve B24
- Ball valve B26
- Ball valve B27
- Ball valve B42
- Ball valve B44
- Ball valve B46
- Ball valve B47
- Ball valve B52
- Ball valve B54
- Ball valve B56
- Ball valve B57
- Ball valve BB02
- Ball valve BB04
- Ball valve BB06
- Ball valve BB07
- Product overview
- Solenoid valves
- Electric valves
- Multi-port valve blocks
- Diaphragm valves
- Product overview
- Diaphragm valve 601
- Diaphragm valve 602
- Diaphragm valve 605
- Diaphragm valve 607
- Diaphragm valve 610
- Diaphragm valve 611
- Diaphragm valve 612
- Diaphragm valve 613
- Diaphragm valve 615
- Diaphragm valve 616
- Diaphragm valve 617
- Diaphragm valve 618
- Diaphragm valve 620
- Diaphragm valve 625
- Diaphragm valve 629
- Diaphragm valve 638
- Diaphragm valve 639
- Diaphragm valve 643
- Diaphragm valve 649
- Diaphragm valve 650
- Diaphragm valve 650TL
- Diaphragm valve 651
- Diaphragm valve 652
- Diaphragm valve 653
- Diaphragm valve 654
- Diaphragm valve 655
- Diaphragm valve 656
- Diaphragm valve 658
- Diaphragm valve 660
- Diaphragm valve 671
- Diaphragm valve 673
- Diaphragm valve 673P9
- Diaphragm valve 675
- Diaphragm valve 687
- Diaphragm valve 688
- Diaphragm valve 695
- Diaphragm valve 698
- Diaphragm valve C58
- Diaphragm valve C60
- Diaphragm valve C67
- Diaphragm valve R629
- Diaphragm valve R639
- Diaphragm valve R647
- Diaphragm valve R649
- Diaphragm valve R677
- Diaphragm valve R690
- GEMÜ Q30
- GEMÜ Q40
- GEMÜ Q50
- GEMÜ Q51
- Diaphragm valve GEMÜ SUPM SUMONDO
- Membranventil GEMÜ SUHK SUMONDO
- Diaphragm valve GEMÜ SU40
- Diaphragm valve GEMÜ SU60
- Single-use diaphragm valve body
- Metal aseptic diaphragm valves
- Metal industry
- Plastic
- Ultra pure plastic
- Single-use
- Product overview
- Diaphragms
- Diaphragm globe valves
- Control valves
- Check valves
- Globe Valves
- Globe valve 312
- Globe valve 314
- Globe valve 343
- Globe valve 352
- Globe valve 352
- Globe valve 505
- Globe valve 507
- Globe valve 514
- Globe valve 519
- Globe valve 529
- Globe valve 530
- Globe valve 532
- Globe valve 533
- Globe valve 534
- Globe valve 536
- Globe valve 537
- Globe valve 539
- Globe valve 543
- Globe valve 549
- Globe valve 550
- Globe valve 553
- Globe valve 554
- Globe valve 555
- Globe valve R563
- Globe valve 565
- Globe valve 566
- Globe valve N507
- Strainer N570
- Globe valve S40
- Single Use Valves
- Valve actuators
- Pilot valves
- Bottom outlet and container valves
- Accessories valve designs
- Accessories
- Product overview
- Manual override 1002
- Sampling lever 1010
- Threaded socket, plastic 1031
- Plastic flange with flange sleeve 1034
- Union end, plastic 1035
- Plastic mounting plates for diaphragm valves 1041
- Mounting set 1050
- 1106
- Seal adjuster with transparent cap 1108
- Stroke limiter 1110
- Stroke limiter with transparent cap 1114
- Stroke limiter 1151
- Stroke limiter 1152
- Stroke limiter with optical position indicator 1161
- Enclosed mounting for proximity switches 1210
- Mounting bracket for proximity switches 1216
- Cable sockent / plug
- Plug without light 1221
- Plug with light 1222
- Plug with light 1223
- Plug with and without light 1224
- Limit switch, change-over contact 1250
- Limit switch, maximum contact 1251
- Limit switch, minimum contact 1252
- Limit switch, maximum contact 1256
- Limit switch, minimum contact 1257
- Instrument sensor 1270
- Instrument sensor 1271
- Instrument sensor 1272
- Instrument sensor 1273
- Optical position indicator with transparent cap 1300
- Optical position indicator 1310
- Mounting kit for GEMÜ 1435: 1445
- NAMUR mounting bracket 1450
- NAMUR mounting bracket 1460
- NAMUR mounting bracket 1461
- 1571
- Silencer 1750
- Throttle 2022
- 2026
- PPF
- Product overview
- Ultra pure accessories
- Accessories
- Butterfly valves
- Valve knowledge
- Measurement and control engineering
- Product search
- Flowmeters
- Pressure and temperature measurement devices
- Position indicators and combi switchboxes
- Product overview
- Elektrischer Stellungsrückmelder 1240
- Electrical position indicator 1211
- Electrical position indicator 1215
- Electrical position indicator 1230
- Electrical position indicator 1231
- Electrical position indicator 1232
- Electrical position indicator 1234
- Electrical position indicator 1235
- Electrical position indicator 1236
- Electrical position indicator 1242
- Ventilanschaltung 4240
- Combi switchbox 4241
- Travel sensor 4232
- Combi switchbox 4242
- Electrical position indicator C12A
- Electrical position indicator LSC
- Electrical position indicator LSF
- Product overview
- Control valves
- Positioners and process controllers
- Connection technology
- Accessories Measurement and control engineering
- Customer solutions
- Medical
- LEAP INTO THE FUTURE
- Valve designs
- Applications
- Pharmaceutical, biotechnology and cosmetics industries
- Industrial water treatment
- Application examples
- GEMÜ valves in plants for modern sludge recycling
- From a single source
- Water treatment plant
- DVGW drinking water reservoir
- Sea water desalination by reverse osmosis (RO)
- Boron decontamination
- Softening water for pharmaceuticals
- Mobile drinking water treatment
- Uranium removal and partial deionization
- Partial deionization using the CARIX procedure
- Multi-port valve blocks: Generation of ultra-pure water
- Deionization of boiler feed water
- Vacuum evaporator for waste water and solvents
- Cooling circuit for industrial water / Butterfly valves
- High purity steam generation for sterilization
- Distillation unit for WFI water
- Ultra purification of high purity water
- Sewage clarification plant / Sewage activating basin
- Reverse osmosis / Stainless steel diaphragm valves
- Product advantages
- Membrane filtration
- Application examples
- Microelectronics and semiconductor industries
- Application examples
- GEMÜ PC50 iComLine variant reduction
- GEMÜ PC50 iComLine solutions
- Self-sealing joint for GEMÜ PC50
- Valve solutions for mixing electrode slurries
- Retrofit and refurbishment
- GEMÜ CleanStar for use in DFS Fusion chemical blending systems
- Fabrication of metallic microcomponents
- Integration into walls
- Supply of high purity chemicals
- Process equipment wet bench
- GEMÜ stainless steel components for solvent applications in the semiconductor industry
- battery filling
- Product advantages
- Applications brochure
- Application examples
- Foodstuffs and beverages
- Chemical engineering
- Surface finishing
- Power generation and environmental engineering
- Mechanical engineering and processing industry
- Medical
- Pharmaceutical, biotechnology and cosmetics industries
- Download
- Product documentation
- Approvals and Declarations of Conformity
- Service
- Brochures
- Films
- Animations & films
- Cultivated Meat mit GEMÜ
- Diaphragm replacement GEMÜ Code 5M at the GEMÜ 650 BioStar diaphragm valve
- Manschettenwechsel GEMÜ R480 Victoria
- GEMÜ 1441 cPos-X
- Schulungsvideo Umbau auf pneumatischen Antrieb NO und NC
- Dichtungswechsel bei Kugelhähnen
- Elektromotorische Ventile | GEMÜ eSyDrive Funktionen
- Elektromotorische Ventile | GEMÜ eSyDrive Webeinstellungen
- Elektromotorische Ventile | GEMÜ eSyDrive Inbetriebnahme
- Elektromotorische Ventile | GEMÜ eSyDrive Weboberfläche
- Elektromotorische Ventile | GEMÜ eSyDrive Netzwerkverbindung
- Tube replacement
- Pinch valve
- Replacing wearing parts on the seat valve GEMÜ 554
- Diaphragm change GEMÜ 655
- Pressure Compensation for GEMÜ M75
- Positioning accuracy of the F60 filling valve
- Changing cartridges of GEMÜ F40
- Diaphragm replacement for GEMÜ C67
- Diaphragm replacement for GEMÜ C60
- Setting the closing and opening limit for GEMÜ 601
- Outstanding innovations and new products
- New surface-technology centre
- Papierlos: Wartung von Anlagenkomponenten per RFID
- Kundenlösungen für Industrieanwendungen
- GEMÜ Füllplattform mit PD-Technologie
- Setting the closing and opening limit for GEMÜ 653/654
- Setting the closing and opening limit for GEMÜ 660
- Diaphragm replacement for GEMÜ 687 with diaphragm code 5E
- Diaphragm replacement for GEMÜ 650 with diaphragm code 5E
- Assembly of the GEMÜ 1435 positioner
- Commissioning of the GEMÜ 1435 positioner
- Christmas message 2017
- News: Aseptic control valve
- Christmas message 2016
- GEMÜ Smile - Unser Lächeln schon bemerkt?
- Explain-it: GEMÜ Conexo
- Reliable also with manual operator: GEMÜ SUMONDO
- World full of valves: Abrasion
- Man and machine
- Solution on the path to Industry 4.0: GEMÜ Conexo
- World without valves
- Christmas message 2015
- Clean room plant Emmen
- Butterfly valve for controlling corrosive media: GEMÜ 490
- Protects staff and products: GEMÜ 650TL
- Focus on intelligent processes: GEMÜ CONEXO
- Filling valve in action: GEMÜ 660
- GEMÜ "from within": The corporate film
- GEMÜ training: Two professions
- Further development: GEMÜ 650TL diaphragm valve
- New control valve for small volumes: GEMÜ 566
- European Production and Logistics Centre
- GEMÜ sampling bottle system
- Clean solution for pure steam: GEMÜ 505/555
- GEMÜ cleanroom plant opens in Emmen
- Changing DN4-DN15 diaphragms
- Changing DN15-DN300 diaphragms
- How butterfly valves work
- How diaphragm valves with plastic valve bodies work
- How ball valves work
- How diaphragm valves with metal valve bodies work
- How globe valves work
- Controlled process reliability: GEMÜ SUMONDO
- Combi switchbox for linear actuators: GEMÜ 4242
- Multi-port valve in action: GEMÜ cocktail mixer
- Compact: GEMÜ plastic multi-port valve blocks
- GEMÜ stainless steel multi-port valve systems
- GEMÜ training: the normal working day
- GEMÜ continues to grow: Film about ACHEMA 2012
- Multi-functional: Plastic multi-port valve blocks
- GEMÜ M-Block for sterile applications
- M-Block: Example of three valve seats
- GEMÜ M-Block: Example: "Double block and bleed"
- Getting started: As a "professional" at GEMÜ
- Quality: GEMÜ butterfly valve test rig
- Critical fluid handling: Wafer coating
- Single-use valve designs compared
- Webinar: Controlled process reliability
- Distribute, mix and collect: GEMÜ 553
- Clean room plant Emmen
- GEMÜ at PPMA
- Animations & films
- Product documentation
- Service
- News
- Contacts
- Home
- Products
- Valve designs
- Butterfly valves
- CONEXO - Valves with RFID
- Pressure control valves
- Fittings & tubes
- Ball valves
- Solenoid valves
- Electric valves
- Multi-port valve blocks
- Diaphragm valves
- Diaphragms
- Diaphragm globe valves
- Control valves
- Check valves
- Globe Valves
- Single-Use Valves
- Valve actuators
- Pilot valves
- Bottom outlet and container valves
- Accessories valve designs
- Check valves
Areas of application and industrial sectors
Check valves are used in virtually all types of systems, as well as numerous processes and applications in all industries. GEMÜ offers various types of check valves.
- Media temperature *: -10 to 180 °C
- Operating pressure*: 0,2 to 25 bar
- Nominal sizes: DN 6 to 50
- Conformities: ATEX | EAC | FDA | Oxygen | TA Luft (German Clean Air Act)
{"ANSCHLUSSART":[{"i":2,"v":"Spigot"},{"i":10,"v":"Threaded connection"},{"i":13,"v":"Flange"},{"i":14,"v":"Clamp"}],"ATEX":[{"i":"2","v":"true"}],"DICHTWERKSTOFF":[{"i":20,"v":""}],"EX_SCHUTZ":[{"i":"2","v":"true"}],"KOERPERWERKSTOFF":[{"i":247,"v":"1.4435 (BN2), forged material"},{"i":1239,"v":"1.4408, investment casting material"},{"i":1245,"v":"1.4435, investment casting material"}],"KONFORMITAET":[{"i":2,"v":"TA Luft (German Clean Air Act)"},{"i":3,"v":"Oxygen"},{"i":14,"v":"ATEX"},{"i":25,"v":"FDA"},{"i":31,"v":"EAC"}],"MAX_BETRIEBSDRUCK":[{"i":25,"v":"25"}],"MAX_MEDIENTEMPERATUR":[{"i":180,"v":"180"}],"MIN_MEDIENTEMPERATUR":[{"i":-10,"v":"-10"}],"NENNWEITE":[{"i":41,"v":"DN 25 (1'')"},{"i":44,"v":"DN 10 (3\/8'')"},{"i":48,"v":"DN 15 (1\/2'')"},{"i":57,"v":"DN 32 (1 1\/4'')"},{"i":59,"v":"DN 40 (1 1\/2'')"},{"i":64,"v":"DN 50 (2'')"},{"i":66,"v":"DN 20 (3\/4'')"},{"i":67,"v":"DN 6"},{"i":78,"v":"DN 8 (1\/4'')"}]}
- Media temperature *: 0 to 130 °C
- Operating pressure*: 0 to 6 bar
- Nominal sizes: DN 4 to 20
- Conformities: EAC
{"ANSCHLUSSART":[{"i":12,"v":"Flare"}],"DICHTWERKSTOFF":[{"i":20,"v":""}],"KOERPERWERKSTOFF":[{"i":1284,"v":"PTFE"}],"KONFORMITAET":[{"i":31,"v":"EAC"}],"MAX_BETRIEBSDRUCK":[{"i":6,"v":"6"}],"MAX_MEDIENTEMPERATUR":[{"i":130,"v":"130"}],"NENNWEITE":[{"i":44,"v":"DN 10 (3\/8'')"},{"i":48,"v":"DN 15 (1\/2'')"},{"i":58,"v":"DN 4"},{"i":66,"v":"DN 20 (3\/4'')"}]}
- Media temperature: 5 to 80 °C
- Ambient temperature*: 5 to 50 °C
- Operating pressure*: 0 to 16 bar
- Nominal sizes*: DN 10 to 100
- Body configurations: 2/2-way body
- Connection types: Flange | Solvent cement socket | Spigot | Threaded connection
- Connection standards: ANSI | DIN | EN
- Body materials: PP-H, natural | PVC-U
- Seat seal materials: EPDM | FKM
- Conformities: ATEX
{"ANSCHLUSSART":[{"i":1,"v":"Solvent cement socket"},{"i":2,"v":"Spigot"},{"i":10,"v":"Threaded connection"},{"i":13,"v":"Flange"}],"DICHTWERKSTOFF":[{"i":20,"v":""}],"KOERPERWERKSTOFF":[{"i":1263,"v":"PP-H, natural"},{"i":1268,"v":"PVC-U"}],"KONFORMITAET":[{"i":14,"v":"ATEX"}],"MAX_BETRIEBSDRUCK":[{"i":16,"v":"16"}],"MAX_MEDIENTEMPERATUR":[{"i":80,"v":"80"}],"MIN_MEDIENTEMPERATUR":[{"i":5,"v":"5"}],"NENNWEITE":[{"i":41,"v":"DN 25 (1'')"},{"i":44,"v":"DN 10 (3\/8'')"},{"i":48,"v":"DN 15 (1\/2'')"},{"i":53,"v":"DN 100 (4'')"},{"i":57,"v":"DN 32 (1 1\/4'')"},{"i":59,"v":"DN 40 (1 1\/2'')"},{"i":66,"v":"DN 20 (3\/4'')"},{"i":71,"v":"DN 65 (2 1\/2'')"},{"i":77,"v":"DN 80 (3'')"}]}
- Media temperature:-196 to 400 °C
- Operating pressure :0 to 40 bar
- Nominal sizes:DN 15 to 300
- Connection types:Flange
- Connection standards:ANSI | ASME | EN
- Body materials:1.0619, galvanized cast steel material | 1.4408, investment casting material
- Seal materials:EPDM | FKM | NBR | PTFE
- Disc/spring cross materials:1.4408, investment casting material | 1.4469, duplex cast steel material
- Spring materials:1.4571, spring steel | 2.4610
- Conformities:ATEX | DVGW Drinking water | EAC | FDA | KTW
{"ANSCHLUSSART":[{"i":13,"v":"Flange"}],"DICHTWERKSTOFF":[{"i":20,"v":""}],"KOERPERWERKSTOFF":[{"i":256,"v":"1.0619, galvanized cast steel material"},{"i":1239,"v":"1.4408, investment casting material"}],"KONFORMITAET":[{"i":6,"v":"KTW"},{"i":13,"v":"DVGW Drinking water"},{"i":14,"v":"ATEX"},{"i":25,"v":"FDA"},{"i":31,"v":"EAC"}],"MAX_BETRIEBSDRUCK":[{"i":40,"v":"40"}],"MAX_MEDIENTEMPERATUR":[{"i":400,"v":"400"}],"MIN_MEDIENTEMPERATUR":[{"i":-196,"v":"-196"}]}
- Media temperature:-200 to 300 °C
- Operating pressure :0 to 16 bar
- Nominal sizes:DN 50 to 600
- Connection types:Flange
- Connection standards:ANSI | ASME | EN
- Body materials:1.0619, galvanized cast steel material | 1.4408, investment casting material | EN-GJS-400-15
- Seal materials:EPDM | FKM | NBR
- Spring materials:1.4571, spring steel
- Conformities:EAC | WRAS
- Plate material:1.4408, investment casting material | 1.4469, duplex cast steel material | EN-GJS-400-15, SG iron material
{"ANSCHLUSSART":[{"i":13,"v":"Flange"}],"DICHTWERKSTOFF":[{"i":20,"v":""}],"KOERPERWERKSTOFF":[{"i":256,"v":"1.0619, galvanized cast steel material"},{"i":265,"v":"EN-GJS-400-15"},{"i":1239,"v":"1.4408, investment casting material"}],"KONFORMITAET":[{"i":9,"v":"WRAS"},{"i":31,"v":"EAC"}],"MAX_BETRIEBSDRUCK":[{"i":16,"v":"16"}],"MAX_MEDIENTEMPERATUR":[{"i":300,"v":"300"}],"MIN_MEDIENTEMPERATUR":[{"i":-200,"v":"-200"}]}
- Media temperature :-10 to 120 °C
- Ambient temperature:0 to 60 °C
- Operating pressure :1 to 10 bar
- Nominal sizes:DN 32 to 600
- Connection types:Flange
- Connection standards:ANSI | DIN | EN | ISO
- Body materials:PP | PVC-U, grey | PVDF
- Seal materials:FKM | NBR | PTFE
- Disc materials:PP-H | PVC-U | PVDF
- Conformities:EAC
{"ANSCHLUSSART":[{"i":13,"v":"Flange"}],"DICHTWERKSTOFF":[{"i":20,"v":""}],"KOERPERWERKSTOFF":[{"i":249,"v":"PVC-U, grey"},{"i":1290,"v":"PP"},{"i":1291,"v":"PVDF"}],"KONFORMITAET":[{"i":31,"v":"EAC"}],"MAX_BETRIEBSDRUCK":[{"i":10,"v":"10"}],"MAX_MEDIENTEMPERATUR":[{"i":120,"v":"120"}],"MIN_MEDIENTEMPERATUR":[{"i":-10,"v":"-10"}],"NENNWEITE":[{"i":46,"v":"DN 125 (5'')"},{"i":47,"v":"DN 250"},{"i":52,"v":"DN 200"},{"i":53,"v":"DN 100 (4'')"},{"i":54,"v":"DN 300"},{"i":57,"v":"DN 32 (1 1\/4'')"},{"i":59,"v":"DN 40 (1 1\/2'')"},{"i":60,"v":"DN 400"},{"i":61,"v":"DN 150 (6'')"},{"i":62,"v":"DN 350"},{"i":64,"v":"DN 50 (2'')"},{"i":65,"v":"DN 500"},{"i":68,"v":"DN 450"},{"i":70,"v":"DN 600"},{"i":71,"v":"DN 65 (2 1\/2'')"},{"i":77,"v":"DN 80 (3'')"}]}
- Media temperature:-10 to 200 °C
- Ambient temperature:20 to 95 °C
- Operating pressure :1 to 16 bar
- Nominal sizes:DN 32 to 600
- Connection types:Flange
- Connection standards:ANSI | DIN | EN | ISO
- Body materials:1.0460, galvanized cast steel material | 1.4408, investment casting material | 1.4571, forged material | 2.0975, cast bronze material
- Seal materials:EPDM | FKM | NBR | PTFE
- Disc materials:1.0460, galvanized cast steel material | 1.4408, investment casting material | 1.4571, forged material | 2.0975, bronze casting material
- Conformities:ATEX | EAC | FDA
{"ANSCHLUSSART":[{"i":13,"v":"Flange"}],"DICHTWERKSTOFF":[{"i":20,"v":""}],"KOERPERWERKSTOFF":[{"i":266,"v":"2.0975, cast bronze material"},{"i":267,"v":"1.4571, forged material"},{"i":268,"v":"1.0460, galvanized cast steel material"},{"i":1239,"v":"1.4408, investment casting material"}],"KONFORMITAET":[{"i":14,"v":"ATEX"},{"i":25,"v":"FDA"},{"i":31,"v":"EAC"}],"MAX_BETRIEBSDRUCK":[{"i":16,"v":"16"}],"MAX_MEDIENTEMPERATUR":[{"i":200,"v":"200"}],"MIN_MEDIENTEMPERATUR":[{"i":-10,"v":"-10"}],"NENNWEITE":[{"i":46,"v":"DN 125 (5'')"},{"i":47,"v":"DN 250"},{"i":52,"v":"DN 200"},{"i":53,"v":"DN 100 (4'')"},{"i":54,"v":"DN 300"},{"i":57,"v":"DN 32 (1 1\/4'')"},{"i":59,"v":"DN 40 (1 1\/2'')"},{"i":60,"v":"DN 400"},{"i":61,"v":"DN 150 (6'')"},{"i":62,"v":"DN 350"},{"i":64,"v":"DN 50 (2'')"},{"i":65,"v":"DN 500"},{"i":68,"v":"DN 450"},{"i":70,"v":"DN 600"},{"i":71,"v":"DN 65 (2 1\/2'')"},{"i":77,"v":"DN 80 (3'')"}]}