Pump Unions and Related Parts
Pump Unions and Related Parts
This is a chart for the outside Diameter of your plumbing pipes or Threaded Fittings 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 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 â…ž”
2” Outside Diameter is 2 â…ś”
2 ½” Outside Diameter is 2 â…ž”
Threaded Parts Outside Diameter Chart:
1” Pump Thread Outside Diameter is 2”
1” Pump Union Thread Inside Diameter is 1 13/16”
1 1/2” Heater Union or Pump Thread Outside Diameter is 2 7/16”
1 1/2” Heater Nut or Pump Union Inside Diameter is 2 5/16”
2” Heater Union or Pump Thread Outside Diameter is 3 1/16”
2” Heater Nut or Pump Union Inside Diameter is 2 15/16”
2 1/2” Heater Union or Pump Thread Outside Diameter is 3 11/16”
2 1/2” Heater Nut or Pump Union Inside Diameter is 3 9/16”
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Hot Tub 2" 90° Pump Union To Plumbing Connection Kit
MSRP: $47.97$42.99This Kit is a 90° 2" Pump Union To Plumbing Connect Kit found in many Hot Tubs. The Pump Union which measures about 3" Inside the threads receives a 2"street X 2" Slip Slice Valve then you glue the 2" Street X Slip 90° fitting on the slip side of...MSRP: $47.97$42.99 -
Hot Tub 2" Pump Union Slice To Plumbing Connect Kit
MSRP: $42.98$39.99This Kit is a 2" Pump Union, Slice Valve, Spin Kit To Plumbing Connect Kit found in many Hot Tubs. The Pump Union which measures about 3" Inside the threads receives a 2"street X 2" Slip Slice Valve then you glue the 2" coupler to spin it to win it on...MSRP: $42.98$39.99 -
Pump Union, Hayward, 2" Theaded x 1-1/2" Slip or 2" Spigot Set of (2) SP1500
MSRP: $59.99$49.99Half Union Fitting Complete Set... The Threaded side measures about 3" Inside and the Slip Glue end measures about 1 7/8" Inside Diameter for a 1 1/2" fitting to glue inside or 2 2/3" Outside Diameter for a 2" fitting to glue on the outside....MSRP: $59.99$49.99