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If you previously had an account, your information is still here — you’ll just need to reset your password because passwords did not transfer during the migration.
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We’ve upgraded the site with more products and better shipping prices.
Note: Oversized/heavy items (like complete pumps) may require additional shipping charges, especially to AK/HI.
If you previously had an account, your information is still here — you’ll just need to reset your password because passwords did not transfer during the migration.
Reset Your PasswordNote: Some heavier items (such as complete pumps) may have shipping limitations outside of the USA.
Hot Tub PVC Barb Fittings for Spa Plumbing and Air Lines
Shop PVC barb fittings for hot tub plumbing systems. Barb fittings are commonly used for vinyl tubing connections, air lines, ozone systems, and small water circuits inside spa cabinets. These fittings create secure hose connections when used with proper clamps.
Barbs are available in slip x barb, male threaded x barb, female threaded x barb, elbow barb, and tee barb configurations.
Proper sizing ensures leak free tubing connections and reliable air or water flow performance.
Slip vs Street Also Called Spigot
Slip fittings have an internal socket that accepts rigid PVC pipe.
Street fittings also called spigot have one male end with the same outside diameter as pipe. That end inserts into a slip fitting.
Barb ends are designed for flexible tubing and are not glued.
How to Measure Spa Plumbing
Always measure the outside diameter of rigid pipe before ordering slip or street fittings.
Measure inside diameter of tubing for barb fittings.
Standard PVC Pipe Outside Diameter Chart
Nominal Pipe Size Actual Outside Diameter
1/2 inch 0.840 inch
3/4 inch 1.050 inch
1 inch 1.315 inch
1-1/2 inch 1.900 inch
2 inch 2.375 inch
2-1/2 inch 2.875 inch
3 inch 3.500 inch
Threaded Plumbing Parts Size Chart
Threaded Size Approximate Outside Diameter of Male Threads
1/2 inch MPT approx 0.840 inch
3/4 inch MPT approx 1.050 inch
1 inch approx 1.315 inch
1-1/2 inch approx 1.900 inch
2 inch approx 2.375 inch
Need help verifying size? Text photos to 7728005445 or call 8445004645.