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Fittings & Tubing

Telecrafter-(RB-4)-Clip-Gun-Stapler-System-Tool-For-3/8-Tubing,Isopure-Water,1

Telecrafter (RB-4) Clip Gun Stapler System Tool For 3/8" Tubing

$141.98
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Jaco-Tube-Sleeve-for-Compression-Fitting,Isopure-Water,2

Jaco Tube Sleeve for Compression Fitting

$0.56
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DIY---Single-Stage-Residential-Point-of-Use-Drinking-Water-System-Kit---Universal-Inline-Water-Filtration-for-Home---1/4-NPT,Isopure-Water,3

DIY - Single Stage Residential Point of Use Drinking Water System Kit - Universal Inline Water Filtration for Home - 1/4" NPT

from $27.99
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Watts-FMPE-38-W-250-Flowmatic-Polyethylene-Tubing,-3/8-IN-OD,-250-FT,-White,Isopure-Water,4

Watts-FMPE-38-W-250 Flowmatic Polyethylene Tubing, 3/8" IN OD, 250 FT, White

$183.51
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PureT-CR-Cross-Quick-Connect-Fittings,Isopure-Water,5

PureT CR-Cross-Quick Connect Fittings

from $3.00
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Max-Adaptor-(61-4)-Brass-Compression-Nut-1/4,Isopure-Water,6

Max Adaptor (61-4) Brass Compression Nut 1/4"

$1.07
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QMP-(QMPHOSE)-Garden-Hose-Adapter,Isopure-Water,7

QMP (QMPHOSE) Garden Hose Adapter

$8.96
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Watts-(05-3-8)-Mini-Water-Hammer-Arrestor---Pressure-Regulator-3-8-NPT,Isopure-Water,8

Watts (05-3-8) Mini Water Hammer Arrestor - Pressure Regulator 3-8" NPT

$39.97
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Telecrafter-(RB-5)-Clip-Gun-Stapler-System-Tool-For-1/2-Tubing,Isopure-Water,9

Telecrafter (RB-5) Clip Gun Stapler System Tool For 1/2" Tubing

$119.00
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Telecrafter-(RB-2)-Clip-Gun-Stapler-System-Tool-For-1/4-Tubing,Isopure-Water,10

Telecrafter (RB-2) Clip Gun Stapler System Tool For 1/4" Tubing

$128.16
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Max-Adaptor-(65-2001)-Brass-3/8-C-X-3/8-C-X-1/4-FIP-(No-Adapter),Isopure-Water,11

Max Adaptor (65-2001) Brass 3/8" C X 3/8" C X 1/4" FIP (No Adapter)

$10.64
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Watts-I8060-Polyethylene-Tubing,-1/4-IN-OD,-100-FT,-Black-High-Density,Isopure-Water,12

Watts-I8060 Polyethylene Tubing, 1/4" IN OD, 100 FT, Black High Density

$81.24
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Isopure Water · Fittings & Tubing

Quick-Connect Fittings & RO Tubing

Reliable water connections come down to good fittings and the right tubing. We carry a deep range of John Guest quick-connect acetal fittings — connectors, elbows, tees, reducing unions, ball valves and inline check valves — plus polyethylene and LLDPE tubing sized for RO and filtration plumbing.

How to choose fittings & tubing

Match tube OD to fitting. Fittings are sized to tubing outside diameter (1/4", 3/8", 1/2") — measure the OD, not the ID.
Quick-connect makes it easy. Push-to-connect acetal fittings seal without tools or tape and release cleanly for service.
Know your thread. Connectors come in NPT, BSP and UNS threads — match the thread on your housing or faucet.
Add a check valve. Inline check valves prevent back-flow into the membrane or pump — cheap insurance in any RO build.

Building or repairing a line? Tell us the tube size and we'll pull the fittings.

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