How To Measure Hose Clamp Size
Question: Is information technology OK to utilize a 3" clamp on my three" hose?
Answer: Non necessarily. Depending on the manufacturer, some may specify their clamps by the ID of the hose whereas others mensurate based on the overall usable dimension or range of the clamp.
In general, hoses are measured by the inside diameter (ID). In order to notice the correct size clench for your hose, you lot will need to know the outside diameter of your hose.
We'll use a three" ID hose for this example.
In the specifications, the outside diameter of the hose (OD) measures 3.39". If the OD is non shown in the specs, the OD can easily be calculated using the following formula.
(ID) + Wall Thickness + Wall Thickness = (OD)
once we accept the OD, we tin can go to the clamp chart to find a match for this hose. We are using T-bolt clamps as an example equally they are the most difficult to size upwards correctly. The same principles tin be used for pretty much any type of hose clamp.
Using the chart, we want to notice a clamp that has an effective diameter range that fits our OD of three.39". We can see that clamp #72 and #76 both put our hose OD in range. Even so if you lot look at #72, the largest dimension that this clamp is usable at is three.44".
three.44" - 3.39" = 0.05"
That doesn't give us any room to work with, peculiarly in one case the hose is installed onto a pipe. For this reason, clamp #72 is not a good fit. At the very least, yous will desire about ⅛" (0.12") of free infinite in order for the clamp to work properly.
Clamp #76 is the most suitable for this hose because the effective diameter range places our OD closest to the middle.
3.25" + three.44" = half-dozen.69"
6.69 / 2 = iii.345"
Our clamp charts likewise show which clamp is compatible with your hose to assistance you apace decide what size clamp to choose. This chart was compiled based on dimensions from HPS hoses. If y'all are using a hose from another manufacturer, this chart volition get you close but may non exist 100% accurate. The rubber and fool-proof way to find the right clamp is by measuring.
We hope this tech tip was informative and helpful. Drop usa a line at tech@hpsperformanceproducts.com if you would like united states of america to comprehend of your oft asked questions.
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