What size pool jets am I supposed to purchase for 1.5 inch pipes

measuringpool

In my pool, I have two white PVC pipes that push water out, where jets are supposed to fit to increase flow rate.

The diameter of these pipes is 1.5 inches.

I purchased a 5-pack of "Pool and Spa Eyeball Jet 1.5" Threaded to 3/4" Open" jets from an online retailer.

I was sent a pack of 5 jets where the diameter of the threaded portion measured 1.75 inches, too big to fit in the 1.5" wall pipes.

I returned the pack, and requested the correct size.

Again, I was sent the same 1.75 inch pack back. The product is a Pooline item number 11211C. I found an independent description which measures the threaded portion as 1-1/2" MIPT.

Below is a photo from the website referenced above showing the MIPT, and photos of the items I received with a tape showing measurement.

Before I return these items for a third time, I want to make sure I am purchasing for the correct width. Am I simply being sent the wrong item, or am I asking for the wrong item? If so, what should I be asking for?

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Best Answer

Nominal pipe size is for the hole on the inside of the pipe, and that is still subject to "nominal"

A pipe which is 1-1/2 inches (actually 1.557) on the outside is a 1-1/4" pipe.

A 1-1/2 inch pipe is 1.796 inches OD.

Here's a handy and very detailed chart/diagram

You have been asking for the wrong part, and have been sent the part you asked for, twice.

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