What Is a Reducing Flange
/ 5 min read
One flange, two sizes: the larger bolt pattern with the smaller bore. What it is for, what it is not, and the thickness detail that surprises people.
Blog
Size limits, hub and bore detail, and when a reducer is the better part.
A reducing flange is a simple idea with a few sharp edges. These articles cover the size limits, the schedule question, and the applications where the abrupt transition causes real trouble.
How Many Sizes Can a Reducing Flange Drop
/ 5 min read
The two-size practical limit, where it comes from, why weld neck is tighter than slip-on, and what to do when you need to drop further.
Reducing Weld Neck Bore, Hub and Welding
/ 5 min read
Why the pipe schedule is mandatory, what a bore mismatch does to a weld root, and the radiography access problem nobody plans for.
When to Use a Pipe Reducer Instead
/ 5 min read
Pump suction, metering runs, slurry and pressure drop budgets. The applications where a reducing flange is the wrong part, and why.
Reducing Threaded and Socket Weld Flanges
/ 4 min read
Small bore reducing patterns, thread engagement limits, socket depth, and where each belongs in utility and instrument work.
Specifying a Reducing Flange on an RFQ
/ 4 min read
Two sizes on one line item is where orders go wrong. The eight things that must be on the enquiry, and how to identify an existing flange.
More technical reference material is published on Texas Flange.
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