A gasket separates the two tailpieces preventing an electric current from passing. I have searched this site and others to find information on whether dielectric unions are really necessary when joining copper and galvanized pipes. Cxf dielectric flanges pb vancouver toronto montreal cincinnati 18003611452 18005618579. We explain the effect of galvanic corrosion at copper to steel pipe connections and we include notes on the recommendation for a jumper wire across. Dielectric unions are nothing but problems in hot water heating systems. Jomar 701504g, 34, dielectric unions, lead free brass. Install shutoff valve immediately upstream of each dielectric fitting. A dielectric class 3000 union with a dielectric coated a105 carbon steel tailpiece that is 34 female npt, with a 304 stainless 12 male npt threadpiece, teflon oring, is coded as follows. Series lf3001a lead free dielectric unions are used in commercial and residential applications to prevent accelerated corrosion and deterioration in the piping system due to galvanic and stray current. Make sure your system doesnt take on fresh water on a regular basis, i.
Dielectric unions resist corrosion and deterioration when joining pipes made from dissimilar metals. Dielectric unions are used in commercial and residential applications to prevent accelerated corrosion and deterioration in the piping system due to galvanic. Dielectric unions reduce corrosion caused by galvanic action between two different metals by providing insulation between the two sides of the union. Ive cut into systems that are thirty years old and they still look almost new at the transition. Pvc unions 70 dielectric unions lead free brass x galvanized 17, 71 brass x galvanized 71 black iron x black iron 71 galvanized x galvanized 71 lp union 40 basket strainers designer series 7273 builder series 7374 accessories 7580 table of contents. Email this page download pdf download pdf printable page close window the hoke gyrolok dielectric tube fittings are for use in applications where electrical current fl owing through a pipe or tube line must be interrupted to protect vital instrumentation and metering equipment. Legend valve plumbing, industrial, commercial, hydronics. Watts 0009875 34 lf3003 fxf dielectric union, lead free maximum pressure. It consists of a union nut, two tailpieces, and a gasket that separates the tailpieces.
The dielectric union shall be a watts series lf301. Dielectric unions lead free brass x galvanized 11 brass x. Lead free dielectric unions lead free dielectric unions used to properly connect different metal piping prevents the deterioration of the pipe connections and stray induced electrical currents unions available in. In my own case i decided to use them after replacing galvanized for copper at the lav. Email this page download pdf download pdf printable page. Lead free dielectric unions brass solder x galvanized 250 psi solder x fip reducing solder x fip solder x mip brass solder x galvanized features prevents accelerated corrosion 20. The dielectric union valve is located outside of the building structure in order to electrically isolate the building structure from the metallic feed line bringing propane into the building. On the other hand, c is inversely proportional to d, the distance of separation because the smaller the value of d, the smaller the potential difference. Home plumbing specialties dielectric unions dielectric unions fip x brass sweat series 209fx. When a size reduction or change in material is needed, simply enter the tailpiece code and then the threadpiece code separated by a slash as shown below. For flanged fittings models 3100, 3110, and 3200, a.
Series lf301 dielectric unions feature a female iron pipe thread to solder connection. The dielectric union shall be constructed using lead free materials. This product can expose you to chemicals including lead, which is known. Dielectric unions are use to join pipes made dielectric unions are use to join pipes made from dissimilar metals to avoid electrolysis which leads to corrosion and pipe failure. The capacitance c increases linearly with the area a since for a given potential difference. Applications dielectric fittingsunions are for use in residential, com. Dielectric unions and flanges pipe fittings grainger. Available in bronze and 316 stainless steel materials and connections can be made wet or dry.
It is installed between pipes made from dissimilar metal. Dielectric unions brass solder x galvanized 230 black iron fip x fip 231 galvanized fip x fip 232 brass fip x galvanized fip 233 basket strainers ss306 234 ss304 235 ss305 236 ss410 237 ss420 238 ss440 239 ss430 240 bs323dbs 241 ss308 242 ss310 243 ss401 244 ss406 245 ss400 246 ss404 247 ss405 248 ss409 249. Company b also argues that dielectrics tend to clog over time and prefers brass nipples instead. Dielectric unions are used in commercial and residential applications to prevent accelerated corrosion and deterioration in the piping system due to galvanic and stray current. Home plumbing specialties dielectric unions dielectric unions.
The hoke gyrolok dielectric tube fittings are for use in applications where electrical current fl owing through a pipe or tube line must be interrupted to protect vital instrumentation and metering equipment. It is installed between pipes made from dissimilar metals, and features a female iron pipe thread to solder connection. The perfect solution to meeting this regulation and providing a conveniently located positive shutoff valve for homeowners is the use of jomar ball valves that incorporate a dielectric union. Series 3000 dielectric pipe fittings and unions are durable, corrosion resistant fittings and unions that consist of a union nut and two tailpieces. Lp dielectric union, brass mip x flare, 250 psi view product info download spec. There are 6 suppliers who sells dielectric union on, mainly located in asia. Cxf dielectric flanges pb vancouver toronto montreal cincinnati. These unions are designed between pipe made from dissimilar metals to prevent accelerated corrosion and deterioration in the piping system due to galvanic and stray current. Series lf3003 lead free dielectric unions are used in commercial and residential applications to prevent accelerated corrosion and deterioration in the piping system due to galvanic and stray current. These unions are designed to be installed between pipe made from dissimilar metals to prevent accelerated corrosion and.
The dielectric constant or permittivity of a material is a measure of the extent to which the electric charge distribution in the material can be distorted or polarized by the application of an electric field. A full line of electric and pneumatic actuators and direct mount valves. Jomar 29701104g, 701104g, dialectric unions are the most effective way to prevent piping systems from deteriorating from accelerated corrosion from. Us20187075a1 dielectric union valve for liquid propane. Home plumbing specialties dielectric unions dielectric unions fip x brass sweat series. Include end connections compatible with pipes to be joined. A wide variety of dielectric union options are available to you, such as hexagon. Standard gasket a ga suitable for water, air, oil, natural gas, propane, gasoline, kerosene, mineral oil, vegetable oil, and alkalines in 180f 82c at 250psi.
This union is made from galvanized steel and leadfree brass. Fip x swt, mip x swt, fip x bpt, flanged meets astm f49295 and are temperature rated 110c230f. Us20187075a1 us745,979 us20745979a us20187075a1 us 20187075 a1 us20187075 a1 us 20187075a1 us 20745979 a us20745979 a us 20745979a us 20187075 a1 us20187075 a1 us 20187075a1 authority us united states prior art keywords propane inlet union valve valve fuel line prior art date 20120123. It is installed between pipes made from dissimilar metals, and features a female iron pipe. Jul 25, 20 a dielectric union valve is provided specifically adapted for use in liquid propane systems to meet the requirements of nfpa 58 2011 edition. We offer dielectric unions in a range of configurations, sizes, and materials. Plumbing codes in all states require the use of dielectric unions when connecting dissimilar metals. Subject to compliance with requirements, provide products by one of the following. Purpose of dielectric unions is to prevent galvanic corrosion, which is caused by electrolysis. Company a wants to do the entire job in copper, with dielectric unions at any interface to steel. Used to separate two dissimilar metal pipes such as copper pipes and galvanized steel. The dielectric union shall be rated for 250 psi ansi b 16. So far ive solicited quotes from two reputable firms in my area.
But the history of the requirement for and use of dielectric unions and fittings in the u. Dielectric insulated unions hart industrial unions. Addavalve lockwings actuation dielectric unions product. Dielectric unions, watts 3001a dielectric unions, watts. You can also choose from equal, reducing dielectric union, as well as from welding, female dielectric union, and whether dielectric union is copper, ppr, or iron. The body and nut shall be steel with galvanized coat, the gaskets. Unlike the typical gland follower stem steal design in most ball valves, the 1001 series uses orings to create a seal, eliminating leaks. Assembly of copper alloy and ferrous materials with separating nonconductive insulating material. Dielectric insulating connections pressure reducing valve redufix safety group deflector drainage trap funnel kit thermostatic mixing valves mixed water hot water cold water inlet dielec ric nion r. Watts 3001a dielectric unions are used in commercial and residential applications to prevent accelerated corrosion and deterioration in the piping system due to galvanic and stray current. A dielectric union valve is provided specifically adapted for use in liquid propane systems to meet the requirements of nfpa 58 2011 edition.
These unions are designed between pipe made from dissimilar metals to. Dielectric, flanged, chrome plated unit heaters modine vacuum breakers. It is installed between pipes made from dissimilar metals, and features a female iron. The jomar dielectric ball valve is a 14turn, hot forged brass, 2piece design, standard port, with dielectric union, appliance type gas ball valve and. Manufacturer of press connection dielectric unions. Looking for viega propress low lead bronze dielectric union, press x fpt connection type, 34 x 34 tube size 5ulz7.
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