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product warranty. The very idea of using brine as an interstice fluid was thrown out by Bravo for use in Double <br /> Wall sumps because brine would potentially accelerate deterioration of steel/stainless steel components that <br /> come into indirect and direct contact with the brine. This includes penetration fasteners, bolts, flex-connectors <br /> and band clamps. Propylene Glycol helps prevent the liquid from freezing within the interstice. Additionally, if <br /> the brine solution were to leak out of the wall it could also accelerate the corrosion of other metallic components <br /> within the sump. <br /> Q17: Can I fill a Bravo Double Wall sump with another manufacturers Propylene Glycol solution? <br /> A: No. Our glycol is a light red color and is the only fluid allowed in our sump walls primarily to assist with <br /> troubleshooting and identification in the field. The exception is water if the sump must be emptied of glycol and <br /> flushed clean but water or colored water may not be used for continuous monitoring within our sump interstice. <br /> Additionally, other manufacturers may add other chemicals or inhibitors to their fluid in different concentrations <br /> which we do not test for or certify. <br /> Q18:What is propylene glycol?A: Click on this link to find technical reference: Propylene Glycol Used in <br /> moisturizers for medicines, carrier for fragrance oils, food grade antifreeze, hand sanitizers, antibacterial lotions, <br /> saline solutions, cosmetics products, baby wipes, bubble bath solutions, shampoos, paint balls, and air craft <br /> deicing fluids. Bravo uses Propylene Glycol as a interstitial fluid for its double wall hydrostatic sumps. Bravo <br /> chose Propylene Glycol for its freeze-resistant, non-corrosive and non-toxic properties. You can also find the <br /> Bravo interstitial fluid MSDS Here. <br /> Q19:Can I change from hydrostatic monitoring to vacuum monitoring or vise versa?A:Yes one can <br /> change Bravo sumps from hydrostatic to vacuum however you must always check with your local regulatory <br /> authorities and sensor manufacturer before changing a Double Wall monitoring device. Also consult with Bravo <br /> for further recommendations. If you have a vacuum sump, some installation will be required to make your sump <br /> hydrostatic ready. <br /> Q20: Can the Bravo F-Series Fitting be used with a Brine-filled DoubleWall Sump? <br /> A:Yes. The F-Series fitting is compatible with Brine or Saline Solution (sodium chloride) since the fitting does <br /> not consist of any metal components. However, sodium chloride is not allowed in Bravo Systems DoubleWall <br /> Sumps, and will void the warranty of that containment sump. <br /> Q21:What kind of adhesive do I use for the F-Series Fiberglass Fitting? <br /> A: Bravo Systems requires the installer to use the adhesive provided by or made for the brand of fiberglass pipe <br /> you are using. You are also required to mix the Bravo-Supplied Fiberglass Filler with each adhesive kit. These <br /> kits are used for gluing the F-Series Fitting to the Fiberglass Sump wall, as well as the adhesive injection step. <br /> NOV Fiberglass:#7014,#8014 <br /> Ameron: PSX-20 <br /> F-Series Installation Instructions <br /> http://www.sbravo.com/faq.htm <br />