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Make sure to use oxygen barrier PEX in any closed-loop hydronic heating system that includes PEX tubing. New water is not routinely introduced to closed-loop systems. The same water cycles through them, under pressure, continuously. Oxygen corrodes ferrous metals. Any … Continue reading →
Viega’s FostaPEX tubing provides a unique option for PEX installations. Its aluminum layer serves as an oxygen barrier, making FostaPEX compatible with closed-loop heating systems. The aluminum also keeps the tubing more rigid and reduces linear expansion. Unlike other PEX-AL-PEX, … Continue reading →
It’s easy to remove ProPEX rings from existing connections if you have access to a heat gun. Disconnecting the plastic ProPEX ring makes it possible to reuse brass ProPEX fittings, but EP ProPEX fittings can only be used once. To … Continue reading →
PEX-Aluminum-PEX (PEX-AL-PEX) tubing contains a layer of aluminum embedded between two layers of PEX. PexSupply.com carries standard PEX-AL-PEX made by Rifeng and Uponor. The aluminum serves as an oxygen barrier and makes the tubing more rigid. See the chart below … Continue reading →
It’s possible to kink PEX tubing if you bend it too tightly. When using PEX-B or PEX-C grade pipe you will normally want to cut the affected piece of tubing out of the line and replace it with a coupling, … Continue reading →
PEX tubing is approved for direct burial outdoors, a practice most often necessary when running a water supply line to a house. PEX, since it can expand, resists freezing more effectively than rigid pipe, but PEX can still burst if … Continue reading →
Brand new to PexSupply.com are a range of Sioux Chief Copper Manifolds with Crimp or Compression Balancing Valves. Both of these styles are available with 2, 3, and 4 loops, and have brazed branches which are perfect for hydronic applications. … Continue reading →
Viega Manablocs have three “supply port” connections: one hot and one cold at the top, and one cold at the bottom. Since the Manabloc is partitioned internally into hot and cold sections, hot water from the water heater must enter … Continue reading →
PEX-Aluminum-PEX, or PEX-AL-PEX, is PEX tubing with an embedded layer of aluminum. The aluminum serves as an oxygen barrier and keeps the tubing rigid. PEX-AL-PEX offers the additional advantages of less linear expansion and a larger diameter than standard PEX. … Continue reading →
Most oxygen-barrier PEX does not have the appropriate approval codes for use with potable water and should not be installed in domestic plumbing applications. Uponor’s hePEX recently received NSF approval, making it one of the few types of oxygen-barrier PEX on the market that … Continue reading →
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