Aluminium Back Up Rings A backup ring is meant to healthy amongst the o-ring plus the extrusion hole and stop the extrusion on the o-ring.
Stabilize the fitting: Use a single wrench to carry the fitting physique continual. This prevents putting avoidable pressure within the copper pipe, which could cause it to bend or crack.
You can find a few alternatives to forestall this, the first of which can be to decrease the clearances to decreased the extrusion hole. This is obviously a costly possibility, so a cheaper Resolution is to lift the durometer with the o-ring. Although an increased durometer o-ring offers exceptional extrusion resistance, this is usually not a possible Alternative as a result of materials availability, and to The truth that more difficult durometer resources have minimal lower-stress sealing potential.
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You should not set up compression fittings on copper pipes in locations where inspection and servicing are tough; regular checks are important to detect leaks early.
The fitting physique: Here is the main A part of the fitting and contains the threads that connect to the pipe or tubing.
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Hand-tighten the nut: Screw the compression nut onto the fitting entire body by hand until finally snug. Ensure the fitting is effectively aligned and that the pipe is straight to prevent cross-threading.
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In a sealing software, backup rings offer extra extrusion resistance and stop harm to o-rings and seals when subjected to substantial pressures, much larger extrusion gaps, and/or high temperatures. Copper Braided Tubes