Skip to content

Rectus Ranges

Rectus quick couplers are used in many industries, mainly for connecting hoses and modules quickly and leak free.

They are often used for fluid and gas connections. Depending on the design, the connecting elements for low pressure are suitable for a pressure of up to 35 bar.

The quick couplings are available in the most common materials such as brass, steel, stainless steel, PVDF, and are also increasingly used in plate or block applications.

Filters

  • Parker Rectus 1/8" BSPP Female Plug 21SFIW10MXN - FluidAirFittings
    Parker Rectus Series 21KA Plug | 1/8" BSPP Female Thread | Hex Size 14mm | Length 25mm | 21SFIW10MXN - FluidAirFittings
    Original price £5.94 - Original price £5.94
    Original price
    £5.94
    £5.94 - £5.94
    Current price £5.94

    Parker Rectus 1/8" BSPP Female Plug 21SFIW10MXN

    1/8" BSP Parallel Female Plug, Series 21KA, Standard, Parker Rectus, Pneumatic Quick Release, Non Valved, Brass Nickel Plated, Working Temperature ...

    View full details
    Original price £5.94 - Original price £5.94
    Original price
    £5.94
    £5.94 - £5.94
    Current price £5.94
  • Parker Rectus 3/8" BSPP Female Plug 21SFIW17MXN - FluidAirFittings
    Parker Rectus 21KA Series Plug | 3/8" BSPP Female | Hex Size 19mm | Length 26mm | 21SFIW17MXN - FluidAirFittings
    Original price £7.39 - Original price £7.39
    Original price
    £7.39
    £7.39 - £7.39
    Current price £7.39

    Parker Rectus 3/8" BSPP Female Plug 21SFIW17MXN

    3/8" BSP Parallel Female Plug, Series 21KA, Standard, Parker Rectus, Pneumatic Quick Release, Non Valved, Brass Nickel Plated, Working Temperature ...

    View full details
    Original price £7.39 - Original price £7.39
    Original price
    £7.39
    £7.39 - £7.39
    Current price £7.39
  • Parker Rectus 1/4" BSPP Female Plug 21SFIW13MXN - FluidAirFittings
    Parker Rectus 21KA Series Plug | 1/4" BSPP Female | Hex Size 17mm | Length 25mm | 21SFIW13MXN - FluidAirFittings
    Original price £5.23 - Original price £5.23
    Original price
    £5.23
    £5.23 - £5.23
    Current price £5.23

    Parker Rectus 1/4" BSPP Female Plug 21SFIW13MXN

    1/4" BSP Parallel Female Plug, Series 21KA, Standard, Parker Rectus, Pneumatic Quick Release, Non Valved, Brass Nickel Plated, Working Temperature ...

    View full details
    Original price £5.23 - Original price £5.23
    Original price
    £5.23
    £5.23 - £5.23
    Current price £5.23
  • Parker Rectus 4X6MM Panel Mount Coupling NP 21KAKS06MPN - FluidAirFittings
    Rectus 21KA Series Coupling Panel Mtg Quick Fit | 4mm x 6mm | 21KAKS06MPN - FluidAirFittings
    Original price £33.24 - Original price £33.24
    Original price
    £33.24
    £33.24 - £33.24
    Current price £33.24

    Parker Rectus 4X6MM Panel Mount Coupling NP 21KAKS06MPN

    Pneumatic Quick Release, Series 21KA, Standard, Parker Rectus, Coupling, Panel Mount, Quick Fit Tube Connections, To Fit 4 x 6Tube Size, Valved, Br...

    View full details
    Original price £33.24 - Original price £33.24
    Original price
    £33.24
    £33.24 - £33.24
    Current price £33.24
  • Parker Rectus 6X8MM Panel Mount Coupling NP 21KAKS08MPN - FluidAirFittings
    Rectus 21KA Series Coupling Panel Mtg Quick Fit | 6mm x 8mm | 21KAKS08MPN - FluidAirFittings
    Original price £33.49 - Original price £33.49
    Original price
    £33.49
    £33.49 - £33.49
    Current price £33.49

    Parker Rectus 6X8MM Panel Mount Coupling NP 21KAKS08MPN

    Pneumatic Quick Release, Series 21KA, Standard, Parker Rectus, Coupling, Panel Mount, Quick Fit Tube Connections, To Fit 6 x 8Tube Size, Valved, Br...

    View full details
    Original price £33.49 - Original price £33.49
    Original price
    £33.49
    £33.49 - £33.49
    Current price £33.49
  • Parker Rectus 4X6MM Hose Coupling Nickel Plated 21KAKO06MPN - FluidAirFittings
    Rectus 21KA Series Coupling Quick Fit | 4mm x 6mm | 21KAKO06MPN - FluidAirFittings
    Original price £21.73 - Original price £21.73
    Original price
    £21.73
    £21.73 - £21.73
    Current price £21.73

    Parker Rectus 4X6MM Hose Coupling Nickel Plated 21KAKO06MPN

    Pneumatic Quick Release, Series 21KA, Standard, Parker Rectus, Coupling, Quick Fit Tube Connection, To Fit 4 x 6Tube Size, Valved, Brass Nickel Pla...

    View full details
    Original price £21.73 - Original price £21.73
    Original price
    £21.73
    £21.73 - £21.73
    Current price £21.73
  • Parker Rectus 4X6MM Springguard Coupling Nickel 21KAKK06MPN - FluidAirFittings
    Rectus 21KA Series Coupling Quick Fit c/w Spring Guard | 4mm x 6mm | 21KAKK06MPN - FluidAirFittings
    Original price £30.58 - Original price £30.58
    Original price
    £30.58
    £30.58 - £30.58
    Current price £30.58

    Parker Rectus 4X6MM Springguard Coupling Nickel 21KAKK06MPN

    Pneumatic Quick Release, Series 21KA, Standard, Parker Rectus, Coupling, Quick Fit Tube Connection with Spring Guard, To Fit 4 x 6Tube Size, Valved...

    View full details
    Original price £30.58 - Original price £30.58
    Original price
    £30.58
    £30.58 - £30.58
    Current price £30.58
  • Parker Rectus 6X8MM Springguard Coupling Nickel 21KAKK08MPN - FluidAirFittings
    Rectus 21KA Series Coupling Quick Fit c/w Spring Guard | 6mm x 8mm | 21KAKK08MPN - FluidAirFittings
    Original price £30.58 - Original price £30.58
    Original price
    £30.58
    £30.58 - £30.58
    Current price £30.58

    Parker Rectus 6X8MM Springguard Coupling Nickel 21KAKK08MPN

    Pneumatic Quick Release, Series 21KA, Standard, Parker Rectus, Coupling, Quick Fit Tube Connection with Spring Guard, To Fit 6 x 8Tube Size, Valved...

    View full details
    Original price £30.58 - Original price £30.58
    Original price
    £30.58
    £30.58 - £30.58
    Current price £30.58
  • Parker Rectus 3/8" BSPP Male Plug 21SFAW17MXN - FluidAirFittings
    Rectus 21KA Series Adaptor BSPP Male | 3/8" BSPP Male | 21SFAW17MXN - FluidAirFittings
    Original price £8.33 - Original price £8.33
    Original price
    £8.33
    £8.33 - £8.33
    Current price £8.33

    Parker Rectus 3/8" BSPP Male Plug 21SFAW17MXN

    3/8" BSP Parallel Male Plug, Series 21KA, Standard, Parker Rectus, Pneumatic Quick Release, Non Valved, Brass Nickel Plated, Working Temperature -2...

    View full details
    Original price £8.33 - Original price £8.33
    Original price
    £8.33
    £8.33 - £8.33
    Current price £8.33
  • Parker Rectus 1/8" BSPP Male Plug 21SFAW10MXN - FluidAirFittings
    Parker Rectus 21KA Series Plug | 1/8" BSPP Male Thread | Hex Size 14mm | Length 25mm | 21SFAW10MXN - FluidAirFittings
    Original price £5.12 - Original price £5.12
    Original price
    £5.12
    £5.12 - £5.12
    Current price £5.12

    Parker Rectus 1/8" BSPP Male Plug 21SFAW10MXN

    1/8" BSP Parallel Male Plug, Series 21KA, Standard, Parker Rectus, Pneumatic Quick Release, Non Valved, Brass Nickel Plated, Working Temperature -2...

    View full details
    Original price £5.12 - Original price £5.12
    Original price
    £5.12
    £5.12 - £5.12
    Current price £5.12
  • Parker Rectus 1/4" BSPP Male Plug 21SFAW13MXN - FluidAirFittings
    Rectus 21KA Series Adaptor BSPP Male | 1/4" BSPP Male | 21SFAW13MXN - FluidAirFittings
    Original price £5.33 - Original price £5.33
    Original price
    £5.33
    £5.33 - £5.33
    Current price £5.33

    Parker Rectus 1/4" BSPP Male Plug 21SFAW13MXN

    1/4" BSP Parallel Male Plug, Series 21KA, Standard, Parker Rectus, Pneumatic Quick Release, Non Valved, Brass Nickel Plated, Working Temperature -2...

    View full details
    Original price £5.33 - Original price £5.33
    Original price
    £5.33
    £5.33 - £5.33
    Current price £5.33
  • Parker Rectus 6 X 8MM Hose Coupling Nickel Plated 21KAKO08MPN - FluidAirFittings
    Rectus 21KA Series Coupling Quick Fit | 6mm x 8mm | 21KAKO08MPN - FluidAirFittings
    Original price £21.73 - Original price £21.73
    Original price
    £21.73
    £21.73 - £21.73
    Current price £21.73

    Parker Rectus 6 X 8MM Hose Coupling Nickel Plated 21KAKO08MPN

    Pneumatic Quick Release, Series 21KA, Standard, Parker Rectus, Coupling, Quick Fit Tube Connection, To Fit 6 x 8Tube Size, Valved, Brass Nickel Pla...

    View full details
    Original price £21.73 - Original price £21.73
    Original price
    £21.73
    £21.73 - £21.73
    Current price £21.73
  • Parker Rectus 6MM OD Coupling 21KARP06MPN - FluidAirFittings
    Rectus 21KA Series Coupling Push In | Push in tube 6mm | 21KARP06MPN - FluidAirFittings
    Original price £35.39 - Original price £35.39
    Original price
    £35.39
    £35.39 - £35.39
    Current price £35.39

    Parker Rectus 6MM OD Coupling 21KARP06MPN

    Pneumatic Quick Release, Valved, Coupling, Push-in, Series 21KA, Push in, 6mm Outside Diameter, Brass Nickel Plated, Nitrile Seal, working Temperat...

    View full details
    Original price £35.39 - Original price £35.39
    Original price
    £35.39
    £35.39 - £35.39
    Current price £35.39
  • Parker Rectus 8MM OD Coupling 21KARP08MPN - FluidAirFittings
    Rectus 21KA Series Coupling Push In | Push in tube 8mm | 21KARP08MPN - FluidAirFittings
    Original price £41.12 - Original price £41.12
    Original price
    £41.12
    £41.12 - £41.12
    Current price £41.12

    Parker Rectus 8MM OD Coupling 21KARP08MPN

    Pneumatic Quick Release, Valved, Coupling, Push-in, Series 21KA, Push in, 8mm Outside Diameter, Brass Nickel Plated, Nitrile Seal, working Temperat...

    View full details
    Original price £41.12 - Original price £41.12
    Original price
    £41.12
    £41.12 - £41.12
    Current price £41.12
  • Parker Rectus 8MM Panel Mount Coupling NP 21KATS08MPN - FluidAirFittings
    Rectus 21KA Series Coupling Panel Mtg Hosetail | Hosetail (8mm - 5/16 i.d Hose) | 21KATS08MPN - FluidAirFittings
    Original price £62.17 - Original price £62.17
    Original price
    £62.17
    £62.17 - £62.17
    Current price £62.17

    Parker Rectus 8MM Panel Mount Coupling NP 21KATS08MPN

    Pneumatic Quick Release, Series 21KA, Standard, Parker Rectus, Coupling, Panel Mount, Standard Hose Tail, To Suit Hose Inside Diameter 8mm (5/16"),...

    View full details
    Original price £62.17 - Original price £62.17
    Original price
    £62.17
    £62.17 - £62.17
    Current price £62.17
  • Parker Rectus 6MM Hose Tail Coupling Nickel 21KATF06MPN - FluidAirFittings
    Rectus 21KA Series Coupling Hosetail | Hosetail (6mm i.d Hose) | 21KATF06MPN - FluidAirFittings
    Original price £19.96 - Original price £19.96
    Original price
    £19.96
    £19.96 - £19.96
    Current price £19.96

    Parker Rectus 6MM Hose Tail Coupling Nickel 21KATF06MPN

    Pneumatic Quick Release, Series 21KA, Standard, Parker Rectus, Coupling, Hose Tail, To Suit Hose Inside Diameter 6mm (1/4"), Valved, Brass Nickel P...

    View full details
    Original price £19.96 - Original price £19.96
    Original price
    £19.96
    £19.96 - £19.96
    Current price £19.96
  • Parker Rectus 04MM Hose Tail Coupling Brass Nickel 21KATF04MPN - FluidAirFittings
    Rectus 21KA Series Coupling Hosetail | Hosetail (4mm i.d Hose) | 21KATF04MPN - FluidAirFittings
    Original price £22.33 - Original price £22.33
    Original price
    £22.33
    £22.33 - £22.33
    Current price £22.33

    Parker Rectus 04MM Hose Tail Coupling Brass Nickel 21KATF04MPN

    Pneumatic Quick Release, Series 21KA, Standard, Parker Rectus, Coupling, Hose Tail, To Suit Hose Inside Diameter 4mmmm, Valved, Brass Nickel Plated...

    View full details
    Original price £22.33 - Original price £22.33
    Original price
    £22.33
    £22.33 - £22.33
    Current price £22.33
  • Parker Rectus 8MM Hose Tail Coupling Nickel 21KATF08MPN - FluidAirFittings
    Rectus 21KA Series Coupling Hosetail | Hosetail (8mm i.d Hose) | 21KATF08MPN - FluidAirFittings
    Original price £21.24 - Original price £21.24
    Original price
    £21.24
    £21.24 - £21.24
    Current price £21.24

    Parker Rectus 8MM Hose Tail Coupling Nickel 21KATF08MPN

    Pneumatic Quick Release, Series 21KA, Standard, Parker Rectus, Coupling, Hose Tail, To Suit Hose Inside Diameter 8mm (5/16"), Valved, Brass Nickel ...

    View full details
    Original price £21.24 - Original price £21.24
    Original price
    £21.24
    £21.24 - £21.24
    Current price £21.24
  • Parker Rectus 10MM Hose Tail Coupling Brass Nickel 21KATF10MPN - FluidAirFittings
    Rectus 21KA Series Coupling Hosetail | Hosetail (10mm i.d Hose) | 21KATF10MPN - FluidAirFittings
    Original price £21.73 - Original price £21.73
    Original price
    £21.73
    £21.73 - £21.73
    Current price £21.73

    Parker Rectus 10MM Hose Tail Coupling Brass Nickel 21KATF10MPN

    Pneumatic Quick Release, Series 21KA, Standard, Parker Rectus, Coupling, Hose Tail, To Suit Hose Inside Diameter 10mm (3/8"), Valved, Brass Nickel ...

    View full details
    Original price £21.73 - Original price £21.73
    Original price
    £21.73
    £21.73 - £21.73
    Current price £21.73
  • Parker Rectus 09MM Hose Tail Coupling Nickel 21KATF09MPN - FluidAirFittings
    Rectus 21KA Series Coupling Hosetail | Hosetail (9mm i.d Hose) | 21KATF09MPN - FluidAirFittings
    Original price £38.58 - Original price £38.58
    Original price
    £38.58
    £38.58 - £38.58
    Current price £38.58

    Parker Rectus 09MM Hose Tail Coupling Nickel 21KATF09MPN

    Pneumatic Quick Release, Series 21KA, Standard, Parker Rectus, Coupling, Hose Tail, To Suit Hose Inside Diameter 9mmmm, Valved, Brass Nickel Plated...

    View full details
    Original price £38.58 - Original price £38.58
    Original price
    £38.58
    £38.58 - £38.58
    Current price £38.58
  • Parker Rectus 1/8" BSPP Female Coupling 21KAIW10MPN - FluidAirFittings
    Rectus 21KA Series Coupling BSPP Female | 1/8" BSPP Female | 21KAIW10MPN - FluidAirFittings
    Original price £18.25 - Original price £18.25
    Original price
    £18.25
    £18.25 - £18.25
    Current price £18.25

    Parker Rectus 1/8" BSPP Female Coupling 21KAIW10MPN

    1/8" BSP Parallel Female Coupling, Series 21KA, Standard, Parker Rectus, Pneumatic Quick Release, Valved, Brass Nickel Plated, Nitrile Seal, Workin...

    View full details
    Original price £18.25 - Original price £18.25
    Original price
    £18.25
    £18.25 - £18.25
    Current price £18.25
  • Parker Rectus 1/4" BSPP Female Coupling 21KAIW13MPN - FluidAirFittings
    Rectus 21KA Series Coupling BSPP Female | 1/4" BSPP Female | 21KAIW13MPN - FluidAirFittings
    Original price £18.25 - Original price £18.25
    Original price
    £18.25
    £18.25 - £18.25
    Current price £18.25

    Parker Rectus 1/4" BSPP Female Coupling 21KAIW13MPN

    1/4" BSP Parallel Female Coupling, Series 21KA, Standard, Parker Rectus, Pneumatic Quick Release, Valved, Brass Nickel Plated, Nitrile Seal, Workin...

    View full details
    Original price £18.25 - Original price £18.25
    Original price
    £18.25
    £18.25 - £18.25
    Current price £18.25
  • Parker Rectus 1/8" BSPP Male Coupling 21KAAW10MPN - FluidAirFittings
    Rectus 21KA Series Coupling BSPP Male | 1/8" BSPP Male | 21KAAW10MPN - FluidAirFittings
    Original price £20.23 - Original price £20.23
    Original price
    £20.23
    £20.23 - £20.23
    Current price £20.23

    Parker Rectus 1/8" BSPP Male Coupling 21KAAW10MPN

    1/8" BSP Parallel Male Coupling, Series 21KA, Standard, Parker Rectus, Pneumatic Quick Release, Valved, Brass Nickel Plated, Nitrile Seal, Working ...

    View full details
    Original price £20.23 - Original price £20.23
    Original price
    £20.23
    £20.23 - £20.23
    Current price £20.23
  • Parker Rectus 1/4" BSPP Male Coupling 21KAAW13MPN - FluidAirFittings
    Rectus 21KA Series Coupling BSPP Male | 1/4" BSPP Male | 21KAAW13MPN - FluidAirFittings
    Original price £18.25 - Original price £18.25
    Original price
    £18.25
    £18.25 - £18.25
    Current price £18.25

    Parker Rectus 1/4" BSPP Male Coupling 21KAAW13MPN

    1/4" BSP Parallel Male Coupling, Series 21KA, Standard, Parker Rectus, Pneumatic Quick Release, Valved, Brass Nickel Plated, Nitrile Seal, Working ...

    View full details
    Original price £18.25 - Original price £18.25
    Original price
    £18.25
    £18.25 - £18.25
    Current price £18.25