PVC Plumbing Fittings

PVC Plumbing Fittings

This is a chart for the outside of your plumbing pipes so you can figure out what size parts to order. Note: The actual size a part is called is not the actual size of the hole in the part it is really the Inside Diameter of the pipe that would glue into that part which doesn’t make sense, since you cannot see inside the pipe. Therefore I am giving you the measurements of the outside of the pipe so you know what size part to order.  For example a part that is ½” plumbing would glue in to, would actually measure ¾” inside the hole of the part and on the outside of the pipe that glues into the part.

Pipe Outside Diameter chart:

½” Outside Diameter is ¾”

¾” Outside Diameter is 1”

1” Outside Diameter is 1 ¼”

I have never seen 1 ¼” in Hot Tubs

1 ½” Outside Diameter is 1 ⅞”

2” Outside Diameter is 2 ⅜”

2 ½” Outside Diameter is 2 ⅞”

Note: When gluing New Valves to old plumbing you need to "Spin It To Win It" so you don't have any leaks so watch the video on "Spin It To Win It" glue techniques. Please don't be a drip, "Spin It To Win It" 

  • Hot Tub Spa 12" RADKit® Tight 2" Fitting Outside Coupler Kit Plumbing PVC Fitting
This RadKit is a tighter fit than the standard and measures about 2 3/8" Inside Diameter here the standard measures 2 5/8" Inside Diameter. The RadKit Tight will fit Most 2" Fittings that measure about 2 11/16" Outside Diameter.. You will have to put silicone on the fitting to get this Radkit on and use a flat screw driver to help widen it enough to go on.. This is ideal for use when you have a pressure side fitting you need to seal.. The left side is the RadKit Tight and right side is the standard and you can see the difference in the fit.. This is ideal for use when you have a pressure side fitting you need to seal..
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    Hot Tub Spa 12" RADKit® Tight 2" Fitting Outside Coupler Kit Plumbing PVC Fitting

    MSRP: $79.99
    $54.99
    This kit is a 12" Long RADKit® Tight designed to go onto the outside of a 2" pressure fitting and seal off the area between (2) 2" Fittings Outside to Outside..   This RadKit is a tighter fit than the standard and measures about 2 3/8" Inside...
    MSRP: $79.99
    $54.99
  • Hot Tub Spa 6" RADKit® Tight 2" Fitting Outside Coupler Kit Plumbing PVC Fitting 
This RadKit is a tighter fit than the standard and measures about 2 3/8" Inside Diameter here the standard measures 2 5/8" Inside Diameter. The RadKit Tight will fit Most 2" Fittings that measure about 2 11/16" Outside Diameter.. You will have to put silicone on the fitting to get this Radkit on and use a flat screw driver to help widen it enough to go on.. This is ideal for use when you have a pressure side fitting you need to seal.. The left side is the RadKit Tight and right side is the standard and you can see the difference in the fit.. This is ideal for use when you have a pressure side fitting you need to seal..
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    Hot Tub Spa 6" RADKit® Tight 2" Fitting Outside Coupler Kit Plumbing PVC Fitting

    $39.99
    This kit is a 6" Long RADKit® Tight designed to go onto the outside of a 2" pressure fitting and seal off the area between (2) 2" Fittings Outside to Outside..   This RadKit is a tighter fit than the standard and measures about 2 3/8" Inside...
    $39.99
  • Tool, Cutter, Vinyl and Hose, up to 2 1/2", Gray Style Tool, Cutter, Vinyl and Hose, up to 2 1/2", Gray Style
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    Tool, Cutter, Vinyl and Hose, up to 2 1/2", Gray Style

    MSRP: $46.17
    $34.99
    Gray Style Up to 2 1/2" Vinyl Tubing Ratchet Cutter Aluminum Alloy Body, Stainless Steel Blade, Ratcheting Cutting Action, Cuts Up to 2 1/2" PVC Pipe.. Tool Type Group    PlumbingTool Type    Tubing CutterTool...
    MSRP: $46.17
    $34.99
  • Circulation Pump Bleeder Fitting for some Watkins Hotspring Spa Hot Tub 3/4" barb x 3/4" Barb with a 3/8" Barb Connect Kit 72726 Circulation Pump Bleeder Fitting for some Watkins Hotspring Spa Hot Tub 3/4" barb x 3/4" Barb with a 3/8" Barb Connect Kit 72726
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    Circulation Pump Bleeder Fitting for some Watkins Hotspring Spa Hot Tub 3/4" barb x 3/4" Barb with a 3/8" Barb Connect Kit 72726

    MSRP: $48.98
    $38.99
    This Tee Kit is exclusively for HotSpring Hot Tubs made by Watkins and can be found under the name Hotspring, Solana, Tiger River, Caldera... This Item is the Tee found on the pressure side of a Laing pump with a 3/8" bleeder line plumbed to the...
    MSRP: $48.98
    $38.99
  • Set of (10) Smooth Coupling, 3/4" Barb x 3/4" Barb ,Tube , Coupler Set of (10) Smooth Coupling, 3/4" Barb x 3/4" Barb ,Tube , Coupler
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    Set of (10) Smooth Coupling, 3/4" Barb x 3/4" Barb ,Tube , Coupler

    MSRP: $79.90
    $49.99
    This part is a Set of (10) 3/4" Barb x 3/4" Smooth Barbed Coupling used to couple 3/4" ID Tubing together. 3/4 Inch Barb X 3/4 Inch Barb..  Note: We only use smooth barbs now because the barbed style does not fit every tubing style and the...
    MSRP: $79.90
    $49.99
  • Set of (20) Barb Coupler 3/8" Barb x 3/8" Barb for 3/8" Air Line Tubing Set of (20) Barb Coupler 3/8" Barb x 3/8" Barb for 3/8" Air Line Tubing
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    Set of (20) Barb Coupler 3/8" Barb x 3/8" Barb for 3/8" Air Line Tubing

    MSRP: $89.80
    $44.99
    This item is a set of (20) Barbed Coupling used to couple 3/8" ID hose together. An example would be the air line on a Pump Bleeder, Jet Body or Air Manifold..   For other 3/8" related items click this...
    MSRP: $89.80
    $44.99
  • Hot Tub Spa 6" RADKit® 1 1/2" Fitting Outside Coupler Kit Plumbing PVC Fitting Hot Tub Spa 6" RADKit® 1 1/2" Fitting Outside Coupler Kit Plumbing PVC Fitting
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    Hot Tub Spa 6" RADKit® 1 1/2" Fitting Outside Coupler Kit Plumbing PVC Fitting

    MSRP: $39.99
    $37.99
    This kit is a 6' Long RADKit® designed to go onto the outside of a 1 1/2" fitting and seal off the area between (2) 1 1/2" Fittings Outside to Outside.. An example would be if you had a Suction fitting dripping at the glue joint and there is a piece...
    MSRP: $39.99
    $37.99
  • 10X Hot Tub Spa 1 1/2" Slip X 1 1/2 Slip Coupler Plumbing PVC Fitting How To Video  10X Hot Tub Spa 1 1/2" Slip X 1 1/2 Slip Coupler Plumbing PVC Fitting How To Video
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    10X Hot Tub Spa 1 1/2" Slip X 1 1/2 Slip Coupler Plumbing PVC Fitting How To Video

    MSRP: $74.99
    $37.99
    You are buying a Set of (10) 1 1/2" Slip X 1 1/2"Slip Coupler PVC Plumbing Fittings. The Coupler receives a 1 1/2" fitting which measures 1 7/8" OD on one side and then receives a 1 1/2" fitting which measures 1 7/8" OD on the other side. The...
    MSRP: $74.99
    $37.99
  • 10X Hot Tub Spa 2" Slip X 2" Slip Coupler Plumbing PVC Fitting 10X Hot Tub Spa 2" Slip X 2" Slip Coupler Plumbing PVC Fitting
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    10X Hot Tub Spa 2" Slip X 2" Slip Coupler Plumbing PVC Fitting

    MSRP: $79.90
    $39.99
    This part is a Set of (10) 2" Slip X 2"Slip Coupler PVC Plumbing Fitting. The Coupler receives a 2" fitting which measures 2 3/8" OD on one side and then receives a 2" fitting which measures 2 3/8" OD on the other side. The...
    MSRP: $79.90
    $39.99