News from Stahlin Enclosures

City Water LLC provides municipalities a turnkey wastewater treatment plant solution capable of effectively accommodating between 500 to 10,000 gallons. The evolution of this system featured the need to overcome a significant challenge specific to the reliable protection of critical controls. The Challenge: Enclosures Failed To Protect Operational Controls Many of our wastewater treatment systems are in demanding environments subject to high humidity, corrosive salt water and strong UV degradation. After two-to-three years of service in such applications we began to notice that the integrity of our controls was being threatened by failure of the electrical enclosures used to house and supposedly protect them. At that time we used stainless steel enclosures that were not suitable for long-term reliability within this particular combination of environmental pressures. Part of this problem originates with the fact that although tensile strength is high with metal enclosures, flexural strength (the material's ability to withstand denting) is relatively low. Once metal has gone beyond its elastic limit it has created a potential leak path that could compromise an enclosure's seal integrity. Initially we thought that simply by switching to non-metallic enclosures the problem would be solved. However, even with some non-metallics the harmful of effects of UV rays were still evident through "blooming" of the polymeric substrate. Moreover, we were not satisfied with design elements that seemed to inhibit the amount of available space within such enclosures --- and the ease with which controls could be mounted inside the boxes. Therefore, although we had improved performance results in flexural strength and the ability to withstand an impact without permanent deformation or denting, we still had not found the ideal enclosure product. The Solution: Stahlin Non-Metallic Enclosures And SolarGuard® UV Protection Consequently, we began to explore property performance characteristics of available product lines and discovered Stahlin Non-Metallic Enclosures. A primary difference in this product line is the fact that all enclosures are molded from SolarGuard®, a patented sheet molded compound formulation that claims to provide superior molded-in UV resistance. We found those claims to be true and consequently are now successfully using the Stahlin J Series of enclosures to protect our control systems from UV damage as well as other environmental threats such as corrosion and moisture. Additionally, the fact that Stahlin's non-metallic enclosures are manufactured from a rugged composite material versus a molded thermoplastic, results in significant durability and impact resistance because of low coefficient of thermal expansion versus stainless steel. Certain design features have also proven to be of value. Specifically: the rounded corners, swing-out panels and optimum enclosure depth are conducive to easy, effective installation of controls. A poured polyurethane seamless gasket ensures that the enclosures remain waterproof and dust-tight. In our "deep-south" applications, the reliable seal of Stahlin enclosures has an added benefit of keeping out the sometimes unfriendly lizard population! Our conclusion? Not all enclosures are created equal. Success in any application demands that the proper enclosure product be specified to meet the individual environmental factors impacting the reliability of proper protection for important controls and electrical systems. ----------------- About The Stahlin J Series Line Of Non-Metallic Enclosures: The Stahlin J Series product line was developed as an industrial enclosure for harsh, aggressive environments. Originally designed as an electrical junction box for the oil refining and petrochem industries, the J series has evolved over the years into a versatile industrial enclosure with varied applications for use from high-end electronics to extreme corrosive applications both indoors and out. Rugged design combined with tough, durable materials, for extreme reliability in tough environments are key attributes of this series. About SolarGuard® All Stahlin non-metallic enclosures are protected by patented SolarGuard® --- a unique material formulation that provides superior molded-in UV-resistance. SolarGuard® requires no field maintenance, and is provided at no additional product cost. In extensive indpependent comparison testing, SolarGuard® outperformed all other available SMC formulations by as much as 60% in its ability to retain gloss and color after exposure to concentrated UV light. About City Water LLC: City Water LLC, was found June 1, 2006, and subsequently approached Premier Chemicals LLC with a comprehensive "turnkey" package of product delivery, equipment maintenance, and supplying of new equipment. This partnership has paved the way to a mutually beneficial growth-postured business providing wastewater treatment solutions. Contact: 2690 NE 20 Ave Williston, FL 32696 Phone: 352-528-2161 Fax: 352-528-2412 Web: www.citywaterllc.com Email: office@citywaterllc.com