Fittings: pro, plumbing and watering connections | Multitanks

Fittings

The "Fittings" category of multitanks.com offers you a complete range of solutions to connect and secure your equipment, whether for industry, agriculture or the home. Find all the types of essential fittings, from those suitable for tanks IBC plumbing fittings, not to mention specialized fittings such as Guillemin, Camlock, Express, or stainless steel and food-grade models. Designed to ensure optimal compatibility and reliability, our fittings are selected to meet durability and safety requirements, even in the most demanding environments. Whether you need a quick coupling for a specific project or a robust solution for intensive use, multitanks.com offers a variety of fittings that adapt to the needs of each user. Enjoy a quick and easy shopping experience, with the assurance of finding a professional-quality fitting at a great value.

Got a part in your hand and need to know what screws onto it? Our fitting finder starts from your thread and lists every compatible part, with the inch / millimetre conversion.

Not sure which fitting you need? Tell us what you have, we show you what screws onto it — live prices and stock.

Pipe thread chart: inch / mm conversion (BSP, 15/21, 20/27, S60x6)

A “1/2 inch” thread measures 20.96 mm, not 12.7: in plumbing, the inch size is not converted, it is read from a chart. Here you will find the inch / mm correspondence of every common thread (BSP or “gas thread”, French names 15/21 · 20/27 · 26/34, NPT, S60x6 IBC tanks, Guillemin, Camlock, PVC), a tool that identifies your thread and the fitting that goes with it, and the pitfalls to avoid.

Which thread do you have? Which fitting do you need?

No need to know the name of your thread. Tell us what you need to connect to, or type what you know (“20/27”, “3/4 inch”, “S60x6”, “26.4 mm”): we identify the thread and show you the fittings that go with it. Dimensions according to ISO 228, ISO 7 and ASME B1.20.1.

20/27 · 26/34BSP / gas S60x6 · S100x8Camlock Guillemin DNNPT
✔ Shipped next working day from our stock✔ 4.5/5 from more than 6,400 customer reviews✔ Not sure? Describe what you need, we will find the fitting with you⎙ Printable thread gauge (PDF, actual size)

No need to know the name of your thread. Just answer the question: what do you need to connect to?

You already know the name of your thread? Type it the way you say it: 20/27, 26/34, 3/4 inch, S60x6… everything works.

Examples:

Tell us what you have and what you want to get: we look for the matching fitting in our catalogue.

Keeps only parts whose material is known and matches, for every part of the solution.
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384 products

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Express fitting with threaded end, with gasketExpress Fitting with Female Threaded End, with Mounted Seal
      €5.99i.e. €4.99 excl. VAT
      Express fitting with threaded end, with gasketExpress Fitting with Female Threaded End, with Mounted Seal
          €5.99i.e. €4.99 excl. VAT
          Express fitting with threaded end, with gasketExpress Fitting with Female Threaded End, with Mounted Seal
              Ezfitt Express Fitting with female threaded end and mounted seal (Reference: 511) designed according to the French standard NF E29-573 for professional water and compressed air installations. Made of forged brass with an integrated NBR lip seal , this heavy-duty fitting guarantees optimal sealing up to 10...
              €5.99i.e. €4.99 excl. VAT
              Mixed items
              Express fitting with threaded end, with gasketExpress Fitting with Female Threaded End, with Mounted Seal
                  Ezfitt Express Fitting with female threaded end and mounted seal (Reference: 511) designed according to the French standard NF E29-573 for professional water and compressed air installations. Made of forged brass with an integrated NBR lip seal , this heavy-duty fitting guarantees optimal sealing up to 10...
                  Mixed items
                  €5.99i.e. €4.99 excl. VAT
                  Guillemin Stainless Steel 316 Connector Corrugated Socket | PN16 AISI 316
                      €22.92i.e. €19.10 excl. VAT
                      Guillemin Stainless Steel 316 Connector Corrugated Socket | PN16 AISI 316
                          €22.92i.e. €19.10 excl. VAT
                          Guillemin Stainless Steel 316 Connector Corrugated Socket | PN16 AISI 316
                              The Guillemin symmetrical half-fitting with corrugated sleeve in AISI 316 stainless steel (1.4401) is the high-security transfer solution for corrosive and sensitive fluids. Compliant with NF E 29.572 standards, this 16 bar fitting offers exceptional resistance (50 bar burst) and unrivalled durability in...
                              €22.92i.e. €19.10 excl. VAT
                              Mixed items
                              Guillemin Stainless Steel 316 Connector Corrugated Socket | PN16 AISI 316
                                  The Guillemin symmetrical half-fitting with corrugated sleeve in AISI 316 stainless steel (1.4401) is the high-security transfer solution for corrosive and sensitive fluids. Compliant with NF E 29.572 standards, this 16 bar fitting offers exceptional resistance (50 bar burst) and unrivalled durability in...
                                  Mixed items
                                  €22.92i.e. €19.10 excl. VAT
                                  Half symmetrical fitting Guillemin, firefighter, no lock to female threaded socket in stainless steel
                                      Half symmetrical fitting Guillemin, firefighter, no lock to female threaded socket in stainless steel
                                          Half symmetrical fitting Guillemin, firefighter, no lock to female threaded socket in stainless steel
                                              The female lockless Guillemin symmetrical half coupling in 316 Stainless Steel is designed for demanding fluid transfers in corrosive environments. Compliant with NF E 29.572 and PN16 standards, this BSP threaded coupling guarantees maximum safety for the chemical, food processing and...
                                              €76.40i.e. €63.67 excl. VAT
                                              Mixed items
                                              Half symmetrical fitting Guillemin, firefighter, no lock to female threaded socket in stainless steel
                                                  The female lockless Guillemin symmetrical half coupling in 316 Stainless Steel is designed for demanding fluid transfers in corrosive environments. Compliant with NF E 29.572 and PN16 standards, this BSP threaded coupling guarantees maximum safety for the chemical, food processing and...
                                                  Mixed items
                                                  €76.40i.e. €63.67 excl. VAT
                                                  90° Wide Radius Elbow | Galvanized female/female malleable cast iron EN 1024290° Wide Radius Elbow | Galvanized female/female malleable cast iron EN 10242
                                                      90° Wide Radius Elbow | Galvanized female/female malleable cast iron EN 1024290° Wide Radius Elbow | Galvanized female/female malleable cast iron EN 10242
                                                          90° Wide Radius Elbow | Galvanized female/female malleable cast iron EN 1024290° Wide Radius Elbow | Galvanized female/female malleable cast iron EN 10242
                                                              This 90° elbow with a large radius made of malleable cast iron, galvanized, is an essential connection for your piping networks. Compliant with the European standards EN 10242 and ISO 49, it is designed for maximum reliability and durability. Its galvanized finish, with a thickness of 70 μm, ensures superior corrosion resistance, making it ideal for water, gas, steam and HVAC installations....
                                                              €3.68i.e. €3.07 excl. VAT
                                                              Mixed items
                                                              90° Wide Radius Elbow | Galvanized female/female malleable cast iron EN 1024290° Wide Radius Elbow | Galvanized female/female malleable cast iron EN 10242
                                                                  This 90° elbow with a large radius made of malleable cast iron, galvanized, is an essential connection for your piping networks. Compliant with the European standards EN 10242 and ISO 49, it is designed for maximum reliability and durability. Its galvanized finish, with a thickness of 70 μm, ensures superior corrosion resistance, making it ideal for water, gas, steam and HVAC installations....
                                                                  Mixed items
                                                                  €3.68i.e. €3.07 excl. VAT
                                                                  4-Way Tee Valve | Black malleable cast iron F/F/F/F EN 102424-Way Tee Valve | Black malleable cast iron F/F/F/F EN 10242
                                                                      €5.04i.e. €4.20 excl. VAT
                                                                      4-Way Tee Valve | Black malleable cast iron F/F/F/F EN 102424-Way Tee Valve | Black malleable cast iron F/F/F/F EN 10242
                                                                          €5.04i.e. €4.20 excl. VAT
                                                                          4-Way Tee Valve | Black malleable cast iron F/F/F/F EN 102424-Way Tee Valve | Black malleable cast iron F/F/F/F EN 10242
                                                                              Malleable Cast Iron Fittings with Black Core | EN 10242
                                                                              The F/F/F/F 4-Way Black Core Malleable Cast Iron Tee Distributor is the ideal solution for complex branches. Compliant with EN 10242 and ISO 49 standards, it is designed from EN-GJMB-350-10 cast iron, guaranteeing maximum robustness . Its black finish (70 μm) provides corrosion protection. This fitting is ideally suited for water, gas, steam and HVAC systems. Each part is...
                                                                              €5.04i.e. €4.20 excl. VAT
                                                                              Mixed items
                                                                              4-Way Tee Valve | Black malleable cast iron F/F/F/F EN 102424-Way Tee Valve | Black malleable cast iron F/F/F/F EN 10242
                                                                                  Malleable Cast Iron Fittings with Black Core | EN 10242
                                                                                  The F/F/F/F 4-Way Black Core Malleable Cast Iron Tee Distributor is the ideal solution for complex branches. Compliant with EN 10242 and ISO 49 standards, it is designed from EN-GJMB-350-10 cast iron, guaranteeing maximum robustness . Its black finish (70 μm) provides corrosion protection. This fitting is ideally suited for water, gas, steam and HVAC systems. Each part is...
                                                                                  Mixed items
                                                                                  €5.04i.e. €4.20 excl. VAT
                                                                                  45 ° female male / male PVC joint and screw bendMixed elbow for gluing and threading 45° female / male in PVC
                                                                                      €7.70i.e. €6.41 excl. VAT
                                                                                      45 ° female male / male PVC joint and screw bendMixed elbow for gluing and threading 45° female / male in PVC
                                                                                          €7.70i.e. €6.41 excl. VAT
                                                                                          45 ° female male / male PVC joint and screw bendMixed elbow for gluing and threading 45° female / male in PVC
                                                                                              Mixed PVC PN16 fittings (threaded and solvent-weld)
                                                                                              The Ezfitt 45° mixed elbow for gluing and threading combines two connection technologies in a single element. Designed in PVC PN16, it offers an ideal hybrid solution for installations requiring both glued connection (EN 1452 standard) and threaded connection (ISO 228-1 standard). Available in diameters from 50 to 63mm, this elbow allows creating...
                                                                                              €7.70i.e. €6.41 excl. VAT
                                                                                              Mixed items
                                                                                              45 ° female male / male PVC joint and screw bendMixed elbow for gluing and threading 45° female / male in PVC
                                                                                                  Mixed PVC PN16 fittings (threaded and solvent-weld)
                                                                                                  The Ezfitt 45° mixed elbow for gluing and threading combines two connection technologies in a single element. Designed in PVC PN16, it offers an ideal hybrid solution for installations requiring both glued connection (EN 1452 standard) and threaded connection (ISO 228-1 standard). Available in diameters from 50 to 63mm, this elbow allows creating...
                                                                                                  Mixed items
                                                                                                  €7.70i.e. €6.41 excl. VAT
                                                                                                  Female/Female Sleeve Stainless Steel 316 ISO 4144 | PN 20 BarFemale/female sleeve in stainless steel 316
                                                                                                      €2.40i.e. €2.00 excl. VAT
                                                                                                      Female/Female Sleeve Stainless Steel 316 ISO 4144 | PN 20 BarFemale/female sleeve in stainless steel 316
                                                                                                          €2.40i.e. €2.00 excl. VAT
                                                                                                          Female/Female Sleeve Stainless Steel 316 ISO 4144 | PN 20 BarFemale/female sleeve in stainless steel 316
                                                                                                              The AISI 316 Stainless Steel Female/Female Sleeve is the standard connection solution for demanding industrial piping networks. Compliant with the ISO 4144 standard and withstanding a pressure of 20 bar, it guarantees a perfect seal thanks to its ISO 7-1 (BSPT) thread. Resistant to extreme...
                                                                                                              €2.40i.e. €2.00 excl. VAT
                                                                                                              Mixed items
                                                                                                              Female/Female Sleeve Stainless Steel 316 ISO 4144 | PN 20 BarFemale/female sleeve in stainless steel 316
                                                                                                                  The AISI 316 Stainless Steel Female/Female Sleeve is the standard connection solution for demanding industrial piping networks. Compliant with the ISO 4144 standard and withstanding a pressure of 20 bar, it guarantees a perfect seal thanks to its ISO 7-1 (BSPT) thread. Resistant to extreme...
                                                                                                                  Mixed items
                                                                                                                  €2.40i.e. €2.00 excl. VAT
                                                                                                                  Half symmetrical fitting Guillemin, firefighter, no male stainless steel threaded socket lock
                                                                                                                      Half symmetrical fitting Guillemin, firefighter, no male stainless steel threaded socket lock
                                                                                                                          Half symmetrical fitting Guillemin, firefighter, no male stainless steel threaded socket lock
                                                                                                                              The Guillemin Male Lockless Symmetrical Half Fitting made of 316 Stainless Steel is the ideal connection solution for demanding corrosive environments. Compliant with NF E 29.572 standards, this PN16 fitting with BSP thread can be installed on fixed equipment in the chemical, agri-food and oil...
                                                                                                                              €14.94i.e. €12.45 excl. VAT
                                                                                                                              Mixed items
                                                                                                                              Half symmetrical fitting Guillemin, firefighter, no male stainless steel threaded socket lock
                                                                                                                                  The Guillemin Male Lockless Symmetrical Half Fitting made of 316 Stainless Steel is the ideal connection solution for demanding corrosive environments. Compliant with NF E 29.572 standards, this PN16 fitting with BSP thread can be installed on fixed equipment in the chemical, agri-food and oil...
                                                                                                                                  Mixed items
                                                                                                                                  €14.94i.e. €12.45 excl. VAT
                                                                                                                                  Simple male/female reduction in galvanized maleable cast ironSimple male/female reduction in galvanized maleable cast iron
                                                                                                                                      €2.06i.e. €1.72 excl. VAT
                                                                                                                                      Simple male/female reduction in galvanized maleable cast ironSimple male/female reduction in galvanized maleable cast iron
                                                                                                                                          €2.06i.e. €1.72 excl. VAT
                                                                                                                                          Simple male/female reduction in galvanized maleable cast ironSimple male/female reduction in galvanized maleable cast iron
                                                                                                                                              Single male/female reduction in galvanized male/female cast iron
                                                                                                                                              €2.06i.e. €1.72 excl. VAT
                                                                                                                                              Mixed items
                                                                                                                                              Simple male/female reduction in galvanized maleable cast ironSimple male/female reduction in galvanized maleable cast iron
                                                                                                                                                  Single male/female reduction in galvanized male/female cast iron
                                                                                                                                                  Mixed items
                                                                                                                                                  €2.06i.e. €1.72 excl. VAT
                                                                                                                                                  Reduced male-male nipple made of galvanized malleable cast ironReduced male-male nipple made of galvanized malleable cast iron
                                                                                                                                                      €3.02i.e. €2.52 excl. VAT
                                                                                                                                                      Reduced male-male nipple made of galvanized malleable cast ironReduced male-male nipple made of galvanized malleable cast iron
                                                                                                                                                          €3.02i.e. €2.52 excl. VAT
                                                                                                                                                          Reduced male-male nipple made of galvanized malleable cast ironReduced male-male nipple made of galvanized malleable cast iron
                                                                                                                                                              Galvanized malleable cast iron fittings EN 10242
                                                                                                                                                              The galvanized malleable iron male-to-male reduced nipple offers a high-performance connection solution characterized by exceptional corrosion resistance. Manufactured in EN-GJMB-350-10 and compliant with EN 10242 and ISO 49 standards, it guarantees reliability and durability for the distribution of fluids such as water, gas and steam, as well as for HVAC installations. The minimum...
                                                                                                                                                              €3.02i.e. €2.52 excl. VAT
                                                                                                                                                              Mixed items
                                                                                                                                                              Reduced male-male nipple made of galvanized malleable cast ironReduced male-male nipple made of galvanized malleable cast iron
                                                                                                                                                                  Galvanized malleable cast iron fittings EN 10242
                                                                                                                                                                  The galvanized malleable iron male-to-male reduced nipple offers a high-performance connection solution characterized by exceptional corrosion resistance. Manufactured in EN-GJMB-350-10 and compliant with EN 10242 and ISO 49 standards, it guarantees reliability and durability for the distribution of fluids such as water, gas and steam, as well as for HVAC installations. The minimum...
                                                                                                                                                                  Mixed items
                                                                                                                                                                  €3.02i.e. €2.52 excl. VAT
                                                                                                                                                                  PE Tube Ball Valve PN10 | Compression Connection
                                                                                                                                                                      €35.86i.e. €29.88 excl. VAT
                                                                                                                                                                      PE Tube Ball Valve PN10 | Compression Connection
                                                                                                                                                                          €35.86i.e. €29.88 excl. VAT
                                                                                                                                                                          PE Tube Ball Valve PN10 | Compression Connection
                                                                                                                                                                              The PN10 PE Tube Ball Valve is the essential equipment for the reliable disconnection of your hydraulic networks. Equipped with polypropylene compression connections and high-performance EPDM/HDPE sealing, it can be installed without welding and can withstand temperatures up...
                                                                                                                                                                              €35.86i.e. €29.88 excl. VAT
                                                                                                                                                                              Mixed items
                                                                                                                                                                              PE Tube Ball Valve PN10 | Compression Connection
                                                                                                                                                                                  The PN10 PE Tube Ball Valve is the essential equipment for the reliable disconnection of your hydraulic networks. Equipped with polypropylene compression connections and high-performance EPDM/HDPE sealing, it can be installed without welding and can withstand temperatures up...
                                                                                                                                                                                  Mixed items
                                                                                                                                                                                  €35.86i.e. €29.88 excl. VAT
                                                                                                                                                                                  Large radius curve 90 ° female / female PVC
                                                                                                                                                                                      €5.02i.e. €4.19 excl. VAT
                                                                                                                                                                                      Large radius curve 90 ° female / female PVC
                                                                                                                                                                                          €5.02i.e. €4.19 excl. VAT
                                                                                                                                                                                          Large radius curve 90 ° female / female PVC
                                                                                                                                                                                              The Codital large radius 90° elbow female/female solvent weld (Reference: 5001) is an essential PN16 PVC fitting for your hydraulic installations. Designed according to European standard EN 1452, it guarantees a perfect seal and optimal resistance. Ideal for drinking water supply, irrigation, watering and swimming pool...
                                                                                                                                                                                              €5.02i.e. €4.19 excl. VAT
                                                                                                                                                                                              Mixed items
                                                                                                                                                                                              Large radius curve 90 ° female / female PVC
                                                                                                                                                                                                  The Codital large radius 90° elbow female/female solvent weld (Reference: 5001) is an essential PN16 PVC fitting for your hydraulic installations. Designed according to European standard EN 1452, it guarantees a perfect seal and optimal resistance. Ideal for drinking water supply, irrigation, watering and swimming pool...
                                                                                                                                                                                                  Mixed items
                                                                                                                                                                                                  €5.02i.e. €4.19 excl. VAT