any experimenters here?
Comments
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"…packing in place of ferrule?"??? I don't think so.
I'm a big time experimenter, it seems. Everything that I've done that's failed on reflection was an experiment,
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Hi, The ferrule idea sounds like risky business. You could do a test and see at what pressure the packing connection blows off the pipe 🚀. My question is what problem are you looking to solve?
Yours, Larry
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I’m not that drunk or crazy!
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a compression ferrule is a connection system. It locks into the pipe or tube to keep it from pulling apart.
Although there are other definitions for a ferrule I use wire ferrules on stranded wire to give you a single pin for terminal strips
Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream
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Why? Why not cut it back and install a new ferrule? Not long enough? Get some tubing, a compression union, and a new ferrule.
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Question is about joining pipes & tubes on bench and testing connections against water hammer and flexing.
Decades ago a colleague used to do that. Both solder and compression connections can fail. Some flares do too. So experiments were about what is easiest to fix.
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It is a common connection in Europe. Radiator, thermostatic, balance, prv valves, piping and inside a lot of mod cons is done with ferrule fittings.
Pex to manifolds are usually a ferrule fitting. IOt is a grst fitting for PAP tube.
Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
Ferrules (compression rings) work. Single flares work. Double flares work. Captive o-rings work. Soldering works. Brazing works. Welding works. Packed fittings work.
They also all can fail…
It's not what works, it's what are you trying to do? What pressures? What cycles? Peaks? Temperatures? Ease of disassembly for service? Use the best tool for the given job.
Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
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Across the pond they call them "Olives". They even make puller to pull the olives off but I would do what @HVACNUT suggested.
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Wonder if puller conditions tube for next job?
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»They also all can fail…« what about threaded connections? Dishwashers or ice makers?
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Yes to all.
Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.
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At that, IMHO whoever came up with those little piercing valves used for icemakers and the like should be… don't know what. Something evil, anyway.
Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
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you mean the ones made of steel that rust out?
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that’s part of the design. Self sealing! 🤣
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I guess technically a pack joint is a compression fitting that uses packing. It also uses a clamp to clamp the fitting to the pipe.
They work extremely well and do not seem to care about imperfections in the pipe. But I certainly wouldn't try to use packing in place of a ferrule on a fitting designed for one. There's really nothing to hold the pipe in the connection so it doesn't push out.
Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.
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Crank too hard on faucet bonnet and stem won't turn. So why can't packing secure tube linearly?
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I don't think your hand compares to 100+ psi pushing a tube out of a fitting.
Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.
0
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