How to choose hose clamp size?
What size of hose clamp do I need? To determine the size of hose clamp you require, use this method: Install a hose or tubing on the diameter of the pipe to measure its external diameter. Adjust the tube size used to the tighten fitting that can slide onto the pipe without much struggle. Clamps are sized based on the diameter of the tube they are going around. If you don’t have calipers to determine this, take some string and wrap it around the tube. Measure the distance and divide by 3.Using Calipers Use calipers to measure the outside diameter (O. D. A. Use this measurement to specify the nominal clamp size.Thus a 1. Tri Clamp fitting, will have a flange that is 1. Tri clamp to match, we find our newly arrived fitting is about 1/2 too large. TriClamp use the same clamp. The ‘ferrule’ is the same. The difference is the pipe diameter. To demonstrate, a 1” Tee is attached directly to a 1. Tee.