How to Buy the Right Pipe Fitting by Pipe Dimensions

Why do faucets have 1/2" and 3/4"?

What are the common types of water pipe joints?

Why are some pipe joints marked with 1/2" 3/4" dimensions?

In simple terms, 1/2" and 3/4" are the standard size of the faucet interface, and not to distinguish, because the home improvement pipe diameter is generally used for 1/2" interface, and slightly larger ones have 3/4" interface.

Conversion method:

1 inch =25.4 mm

Divide 1 inch into 8 parts

3/8"* 25.4mm =9.53mm ≈ 10mm

4/8"* 25.4mm =12.7mm ≈ 15mm

5/8"* 25.4mm =15.88mm ≈ 16mm

6/8"* 25.4mm =19.05mm ≈ 20mm

1 inch 8/8"* 25.4mm =25.4mm ≈ 25mm

* Steel pipe should be marked DN,DN is the nominal diameter. Common household water pipe specifications are: DN15 (1/2"), DN20 (3/4"), DN25 (1 inch pipe)......

1. Plastic 1/2" and 3/4" repairing joint

1/2" plastic repairing joint: suitable for the inner diameter of about 12mm, outer diameter of about 16mm water pipe

3/4" plastic repairing joint: suitable for water pipe with inner diameter of about 19mm and outer diameter of about 23mm

Installation mode

2. Plastic 1/2" and 3/4" water connection

1/2" plastic water connection: suitable for water pipe with an inner diameter of about 12mm and an outer diameter of about 16mm

3/4" plastic water connection: suitable for water pipe with an inner diameter of about 19mm and an outer diameter of about 23mm

Installation mode

There is also a water stop joint, similar in appearance to the water connection, the role is to pull the joint can immediately stop the water, often used with the tail of the water gun.

2. Plastic three-way nipple joint is used for water pipe diversion.