5/16" Fittings

John Guest tubing is produced in Linear Low Density Polyethylene which is more robust than traditional LDPE or MDPE.  John Guest fittings are made from high quality materials offering a wide range of temperature and pressure suitability, broad chemical compatibility and low toxicity.  It is ideal for use in water filtration, water purification, and water conditioning.

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  • Bulkhead Connector 5/16 inch Tube OD
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust than tra..
    Ex Tax: £4.44 £5.33
  • Collet Locking Tool for Sizes 3/16 to 1/2 inc
    John Guest fittings and tubing are produced in Linear Low Density Polyethylene which is more robust than traditional LDPE or MDPE.  It offers a wide range of temperature and pressure suitability, broad chemical compatibility and low toxicity.  It is ideal for use in water filtratio..
    Ex Tax: £6.36 £7.64
  • Connection Collet Covers for 5/16 inch Tube OD (Pack of 3)
    John Guest tubing is produced in Linear Low Density Polyethylene which is more robust than traditional LDPE or MDPE.  John Guest fittings are made from high quality materials offering a wide range of temperature and pressure suitability, broad chemical compatibility and low toxicity.&nb..
    Ex Tax: £0.64 £0.77
  • Connection Single Check Valve 5/16 inch Tube OD
    John Guest tubing is produced in Linear Low Density Polyethylene which is more robust than traditional LDPE or MDPE.  John Guest fittings are made from high quality materials offering a wide range of temperature and pressure suitability, broad chemical compatibility and low toxicity.&nb..
    Ex Tax: £14.37 £17.24
  • Enlarger 3/8 inch Tube x 5/16 inch Stem
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust than tra..
    Ex Tax: £1.95 £2.34
  • Equal Elbow 5/16 inch Tube OD x 5/16 inch Tube OD
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.     John Guest tubing is produced in Linear Low Density Polyethylene which is more robu..
    Ex Tax: £2.01 £2.41
  • Equal Straight Connector 5/16 inch Tube OD x 5/16 inch Tube OD
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust than tra..
    Ex Tax: £1.71 £2.05
  • Female Adaptor 1/2 inch Tube OD x 5/8 inch BSP Thread Flat End
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.     John Guest tubing is produced in Linear Low Density Polyethylene which is more robu..
    Ex Tax: £3.32 £3.99
  • Female Adaptor 5/16 inch Tube OD x 1/2 inch BSP Thread Cone End
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust than tra..
    Ex Tax: £2.73 £3.28
  • Female Adaptor 5/16 inch Tube OD x 1/2 inch BSP Thread Flat End
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.     John Guest tubing is produced in Linear Low Density Polyethylene which is more robu..
    Ex Tax: £2.71 £3.25
  • Female Adaptor 5/16 inch Tube OD x 1/2-16 UNS Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.     John Guest tubing is produced in Linear Low Density Polyethylene which is more robu..
    Ex Tax: £3.27 £3.92
  • Female Adaptor 5/16 inch Tube OD x 1/4 FFL Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.     John Guest fittings and tubing are produced in Linear Low Density Polyethylene whic..
    Ex Tax: £2.28 £2.74
  • Female Adaptor 5/16 inch Tube OD x 5/8 inch BSP Thread Flat End
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust than tra..
    Ex Tax: £3.96 £4.75
  • Flow Bend Clip 8mm / 5/16 inch
    John Guest tubing is produced in Linear Low Density Polyethylene which is more robust than traditional LDPE or MDPE.  John Guest fittings are made from high quality materials offering a wide range of temperature and pressure suitability, broad chemical compatibility and low toxicity.&nb..
    Ex Tax: £0.96 £1.15
  • Locking Clip for 5/16 " Tube (Pack of 3)
    John Guest tubing is produced in Linear Low Density Polyethylene which is more robust than traditional LDPE or MDPE.  John Guest fittings are made from high quality materials offering a wide range of temperature and pressure suitability, broad chemical compatibility and low toxicity.&nb..
    Ex Tax: £0.72 £0.86
  • Offset Connector 1/2 inch x 5/16 inch Tube
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.     John Guest tubing is produced in Linear Low Density Polyethylene which is more robu..
    Ex Tax: £3.24 £3.88
  • Plug Connector 5/16 inch
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £0.51 £0.61
  • Reducer 1/2 inch Stem x 5/16 inch Tube
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £1.27 £1.52
  • Reducer 3/8 inch Stem x 5/16 inch Tube
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £1.59 £1.91
  • Reducer 5/16 inch Stem x 1/4 inch Tube
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £1.29 £1.55
  • Reducer 5/16 inch Stem x 3/16 inch Tube
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £1.14 £1.37
  • Reducing Elbow 1/2 inch Tube OD x 5/16 inch Tube OD
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £2.54 £3.04
  • Reducing Elbow 3/8 inch Tube OD x 5/16 inch Tube OD
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £3.12 £3.74
  • Reducing Elbow 5/16 inch Tube OD x 1/4 inch Tube OD
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £2.22 £2.66
  • Reducing Elbow 5/16 inch Tube OD x 3/16 inch Tube OD
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £2.22 £2.66
  • Reducing Straight Connector 1/2 inch Tube OD x 5/16 inch Tube OD
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £1.29 £1.55
  • Reducing Straight Connector 5/16 inch Tube OD x 1/4 inch Tube OD
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £1.83 £2.20
  • Reducing Straight Connector 5/16 inch Tube OD x 5/32 inch Tube OD
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £1.77 £2.12
  • Stem Adaptor 5/16 inch Stem x 1/4 BSP Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £0.66 £0.79
  • Stem Adaptor 5/16 inch Stem x 1/4 BSPT Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £1.20 £1.44
  • Stem Adaptor 5/16 inch Stem x 1/4 NPTF Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £0.75 £0.90
  • Stem Adaptor 5/16 inch Stem x 1/8 BSPT Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £1.20 £1.44
  • Stem Adaptor 5/16 inch Stem x 1/8 NPTF Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £0.75 £0.90
  • Stem Adaptor 5/16 inch Stem x 3/8 BSPT Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £1.29 £1.55
  • Stem Adaptor 5/16 inch Stem x 3/8 NPTF Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £0.96 £1.15
  • Stem Elbow 3/8 inch Stem OD x 5/16 inch Tube OD
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £2.37 £2.84
  • Stem Elbow 5/16 inch Stem OD x 5/16 inch Tube OD
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £2.13 £2.56
  • Straight Adaptor 5/16 inch Tube OD x 1/4 inch BSPT Male Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £1.35 £1.62
  • Straight Adaptor 5/16 inch Tube OD x 1/4 inch NPTF Male Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £1.35 £1.62
  • Straight Adaptor 5/16 inch Tube OD x 1/8 inch BSPT Male Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £1.29 £1.55
  • Straight Adaptor 5/16 inch Tube OD x 1/8 inch NPTF Male Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £1.35 £1.62
  • Straight Adaptor 5/16 inch Tube OD x 3/8 inch BSPT Male Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £1.71 £2.05
  • Straight Adaptor 5/16 inch Tube OD x 3/8 inch NPTF Male Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £1.71 £2.05
  • Swivel Elbow 5/16 inch Tube OD x 1/4 inch NPTF Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £4.86 £5.83
  • Swivel Elbow 5/16 inch Tube OD x 1/8 inch BSPT Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £4.83 £5.80
  • Swivel Elbow 5/16 inch Tube OD x 3/4 inch BSPT Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £4.86 £5.83
  • Swivel Elbow 5/16 inch Tube OD x 3/8 inch BSPT Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £5.01 £6.01
  • Swivel Elbow 5/16 inch Tube OD x 3/8 inch NPTF Thread
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £5.73 £6.88
  • Tube to Hose Elbow 3/8 inch Stem x 5/16 inch Hose
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £1.77 £2.12
  • Tube to Hose Elbow 5/16 inch Stem x 1/4 inch Hose
    Gray acetal copolymer construction with nitrile O-rings. FDA approved materials. NSF Certified 51 & 62. Suitable for water, air, inert gases and pneumatic applications or vacuum.   John Guest tubing is produced in Linear Low Density Polyethylene which is more robust tha..
    Ex Tax: £1.35 £1.62