As you may already know, our SharkBite fittings are made of brass, which is susceptible to corrosion when exposed to severe ground conditions. Any underground application of SharkBite fittings must be wrapped in order to maintain the 25 year warranty.Click to see full answer. Similarly one may ask, are SharkBite fittings good for underground?Underground burial of SharkBite brass fittings requires that the fitting be wrapped in an impermeable material to protect the connection from ground contaminants. Stretches up to 300% for easy use and creates a watertight and airtight seal. Non-adhesive silicone material bonds to itself within minutes.Secondly, do SharkBite fittings last? SharkBite fittings last a long time. In fact, SharkBite warrants the fittings for 25 years when used with SharkBite tubing. Likewise, people ask, can PEX fittings be used underground? – The answer is YES – It can be used underground. It should be buried below the frost line and best if bedded in sand or stone dust. The Advantages Of Using PEX Tubing are: It’s very flexible.Can brass fittings be used underground?Brass fittings are not recommended for use underground. Capillary Fittings are made from copper and require a soldered joint to connect pipes together. Ductile (Malleable) Iron Screwed Fittings can be used with water and compressed air and are relatively inexpensive.

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