Roll-On Expanding Ferrules (14RMP)

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Tri-Clamp style connection used to fit over existing tubing

Roll-on expanding ferrules are available in both 304 & 316L stainless steel alloy.  Product is NOT 3A certified.  Roll-on ferrules are typically used in the dairy and poultry industries.  Instead of butt welding, the roll-on ferrule is typically slipped over the tube and rough welded into place. Rolling Expander Tool for Applying Ferrules also available here.

Roll-On Expanding Ferrules Part Numbers & Dimensions

Roll On Expanding Ferrule Dimensions
Size (Tube OD) Part Number Dimensions
304L 316L A B
1   " 14RMP4-100 -- 0.750 1.005
1-1/2" 14RPM4-150 -- 1.125 1.505
2   " 14RPM4-200 -- 1.312 2.005
2-1/2" 14RPM4-250 -- 1.375 2.505
3   " 14RPM4-300 -- 1.437 3.005
4   " 14RPM4-400 -- 1.500 4.005
6   " 14RPM4-600 -- 2.000 6.005

Watch How to Measure Tri-Clamp Fittings

Tri-Clamp Fittings and Gasket Sizing Guide

Sanitary Fitting Dimensions
Sanitary Size OD of Flange End ID of Tube OD of Tube
1/2″ 0.992 0.370 0.500
3/4″ 0.992 0.620 0.750
1″ 1.984 0.870 1.000
1 1/2″ 1.984 1.370 1.500
2″ 2.516 1.870 2.000
2 1/2″ 3.047 2.370 2.500
3″ 3.579 2.870 3.000
4″ 4.682 3.834 4.000
6″ 6.562 5.782 6.000
8″ 8.602 7.782 8.000
10″ 10.570 9.782 10.000
12″ 12.570 11.760 12.000

Questions & Answers 4

Questions and answers of the customers

  1. Q what is the wall thickness for a 6"?
    A The wall thickness for our 6" fittings is 0.109".
  2. Q Do you have 3D CAD model you can send to me? A STEP file will work if you have one
    A what is the wall thickness for the 6"
  3. Q what is the outside diameter of the flange? Does it work with a 4" clamp?
    A Please refer to our Tri-Clamp Fittings Guide for accurate measurements.
  4. Q I am trying to silver solder or braze your Tri-clamp sanitary fittings on to copper pipe. It looks like the standard weld-on fittings wouldn’t fit but I see that you offer a “roll-on” Tri-clamp fitting that might fit just right. 1) Can you explain the difference between the roll-on fittings from standard fittings? 2) Can you confirm if these fittings will fit over standard-sized copper pipe for silver soldering or brazing?
    A The roll-on ferrules are meant to slide over the other tube (your copper tubing in this case) and then be welded into place for a secure connection. Because you are working with pipe (which is measured by the Inside Diameter) I don't know how close our sanitary fittings are going to match. This means that there will probably be a pretty big gap that will need to be welded for this to work. This type of connection would not be considered sanitary and so it should not be used in the production of any food, beverage for pharmaceutical applications. The standard sanitary fittings we offer are meant to mate up with a tube of the same size and be welded together to form a seamless, smooth connection between the two tubes.

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