3/8" 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.

Sort By:
Show:
Display: List Grid
  • 4 Way Equal Cross 3/8 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 than tra..
    Ex Tax: £5.94 £7.13
  • Acetal Angle Stop Valve 1/2 inch Tube OD x 3/8 inch Branch
    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: £15.31 £18.37
  • Acetal Angle Stop Valve 15mm Tube OD x 3/8 inch Branch
    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: £19.47 £23.36
  • Acetal Angle Stop Valve 3/8 inch Tube OD x 1/4 inch Branch
    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: £21.00 £25.20
  • Acetal Angle Stop Valve 3/8mm Tube OD x 3/8 inch Branch
    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: £21.00 £25.20
  • Bulkhead Connector 3/8 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: £4.53 £5.44
  • 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
  • End Stop Connector 3/8 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 than tra..
    Ex Tax: £0.96 £1.15
  • Enlarger 1/2 inch Tube x 3/8 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: £2.23 £2.68
  • 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 3/8 inch Tube OD x 3/8 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: £2.91 £3.49
  • Equal Straight Connector 3/8 inch Tube OD x 3/8 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: £2.22 £2.66
  • Equal Tee 3/8 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: £3.09 £3.71
  • Female Adaptor 1/2 inch Tube OD x 3/8 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: £2.76 £3.31
  • Female Adaptor 3/8 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 robu..
    Ex Tax: £2.89 £3.46
  • Female Adaptor 3/8 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: £2.84 £3.41
  • Female Adaptor 3/8 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 robust than tra..
    Ex Tax: £3.45 £4.14
  • Female Adaptor 3/8 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 tubing is produced in Linear Low Density Polyethylene which is more robu..
    Ex Tax: £2.31 £2.77
  • Female Adaptor 3/8 inch Tube OD x 1/4 NPNF 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: £2.22 £2.66
  • Female Adaptor 3/8 inch Tube OD x 3/8  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: £3.54 £4.25
  • Female Adaptor 3/8 inch Tube OD x 3/8 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 tubing is produced in Linear Low Density Polyethylene which is more robust than tra..
    Ex Tax: £2.67 £3.20
  • Female Adaptor 3/8 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: £4.20 £5.04
  • Female Adaptor 3/8 inch Tube OD x 9/16-24  British Whitworth 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: £2.40 £2.88
  • Flow Bend Clip 10mm / 3/8 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: £1.14 £1.37
  • Grey Acetal Shut Off Valve Connection 3/8 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: £13.26 £15.91
  • Locking Clip for 3/8 " 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
  • Plug Connector 3/8 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: £0.75 £0.90
  • PP Shut Off Valve Connection 3/8 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 to..
    Ex Tax: £6.42 £7.70
  • PP Shut Off Valve Connection 3/8 inch Tube OD x 1/4 inch Female NPTF
    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 to..
    Ex Tax: £7.44 £8.93
  • PP Shut Off Valve Connection 3/8 inch Tube OD x 3/5 inch Male NPTF
    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 to..
    Ex Tax: £6.42 £7.70
  • Reducer 1/2 inch Stem x 3/8 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: £2.06 £2.47
  • Reducer 3/8 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: £1.56 £1.87
  • Reducer 3/8 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: £1.50 £1.80
  • 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
  • Reducing Bulkhead Connector 3/8 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: £4.53 £5.44
  • Reducing Elbow 1/2 inch Tube OD x 3/8 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: £2.60 £3.12
  • Reducing Elbow 3/8 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: £3.12 £3.74
  • Reducing Elbow 3/8 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: £3.09 £3.71
  • 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 Straight Connector 3/8 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 Straight Connector 3/8 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: £2.19 £2.63
  • Reducing Straight Connector 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: £1.95 £2.34
  • Reducing Tee 3/8 inch Tube OD Ends x 1/4 inch Tube OD Branch
    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: £3.39 £4.07
  • Rigid Elbow 1/4 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: £2.67 £3.20
  • Rigid Elbow 3/8 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: £2.82 £3.38
  • Rigid Elbow 3/8 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: £2.97 £3.56
  • Single Check Valve 3/8 inch Tube OD
    JG  SINGLE CHECK VALVE 3/8 General Description Produced  ensures protection against reversal of flow. The valves can be mounted in any position and an arrow moulded into the body indicates direction of flow. They are designed for conenction to either plastic or soft metal t..
    Ex Tax: £16.56 £19.87
  • Stem Adaptor 1/2 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..
    Ex Tax: £1.14 £1.36
  • Stem Adaptor 1/2 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 than tra..
    Ex Tax: £1.01 £1.21
  • Stem Adaptor 1/4 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: £0.84 £1.01