Water Tap Thread Types

Thread dimensions are considered a nominal size and don t match standard units of measurement.

Water tap thread types. Using the proper pipe thread type is crucial for maintaining and installing equipment so helping you determine what pipe thread you need is important to us. There are three common chamfer types. Most fittings are made from some durable material like brass. Turn off the water at the tap.

Threads are the small rings you ll see on the outside of a faucet or on the inside of a garden hose s fitting. Water valve shut off types are all designed to stop the flow of water. Pictured is a 22mm bath tap. Best surface quality.

There are many different types of thread taps and knowing exactly when to use each kind is the goal of this guide. The tape should lie flat not bunched up over the threads and extend perpendicularly to the length of the pipe. National pipe threads npt have tapered threads. While some thread types require the threads of the male and female end to crush together to form a seal the o ring on this thread type prevents that.

B c and e. Npt threads are designed with a 60 degree thread angle and are used for joining and sealing pipe to fittings in low pressure air or liquids and also mechanical applications. Sae straight threads are able to seal because of the 90 durometer buna n o ring. These are the most common threads used for general purposes.

Chamfer type b 3 5 5 threads long chamfer. Clean the male threads at the end of the pipe with a clean rag. The tap chamfer is the tapering of the threads that distributes the cutting action over several teeth. The water is actually mixed in the spout and not in the body.

Remove the spray gun if fitted from the first hose. The threads are supposed to fit together in a screw like manner to attach a hose to a faucet to allow water to come through without leaking or losing pressure. Sae thread type straight thread o ring boss. Usually the type of hole to be tapped determines which chamfer type should be used.

If the gun connector on the spray end of the hose isn t a water stop type it s a good idea to replace it with one so that you can disconnect connect accessories and a second hose without having to turn off the water at the tap. The taps themselves come in various shapes and sizes but this is a fairly standard mixer design with cold on the right and hot on the left. You ll need a double male connector. Place the end of the plumber s tape on the second thread from the end of the pipe and hold it in place with a finger or thumb.

Several considerations dictate which is the best water shut off valve for your needs including the size of the inlet diameter and outlet diameter as well as how the valve is operated. If you re familiar with tap types but need to learn best practices in their use to avoid breaking taps try our article and video 7 ways to avoid breaking taps. A great variety of thread taps are available with varying advantages and disadvantages. Measuring pipe thread size to find the right thread type can be confusing.