Dielectric Union – FPT Steel x MPT Brass
Dielectric Union – FPT Steel x MPT Brass
Dielectric Union are designed to be installed between pipes of dissimilar metals to avoid electrolysis, which leads to corrosion and pipe failure.
Materials of Dielectric Union:
- Body – Alloy Steel with Zinc Galvanized Plated
- Tailpiece-Brass
- Insulation-Nylon
- Gaskets-EPDM (Standard)
Options of Dielectric Union:
- Body Alloy Steel with Hot dip zinc Galvanized, SS 304 & SS 316
- Tailpiece-Copper
- Insulation-Teflon
- Gaskets- Viton (High Temp.) or Teflon
Type of Dielectric Union:
Female Side Steel X Male Side Brass
Thread Types of Dielectric Union:
BSPP, BSPT, NPT
Specification of Dielectric Union:
The Dielectric Union shall be rated for 250 PSI. Also available of 300 PSI (ANSI B 16.42 OR B 16.24). The body and nut shall be zinc Galvanized coat, the insulator shall be nylon, the tailpiece shall be brass and the gaskets shall be EPDM RUBBER. The Dielectric Union can be provided with any connection type ( welded, sweat, threaded, etc.) and can be made transition between different pipe size. Also available NPT threading on request.
Features of Dielectric Union:
Maximum working water pressure 300 PSI, Maximum working water temperature 180°F. Threaded connection-ANSI B 1.20.1, Copper connections – ANSI B 16.22.
Why use Dielectric Unions:
It is use to Electrolytic corrosion occurs in plumbing systems that contain dissimilar metals. Copper present in heating systems is a metal that dissolves very easily. Waterborne copper particles thus circulate in heating network and come in contact with other metals forming an electric pile phenomenon. Water and the 2 dissimilar metals form a “battery” where electric current carries ions from one metal to another causing it to dissolve.
Application of Dielectric Union:
Dielectric Unions can be used on all installations of heating, air conditioning, hot water storage tanks, chilled water processing tanks, FCUs and AHUs.
Dielectric Union’s ordering procedure:
BOSTAN ENGINNERING is Manufacturer for several qualities of Dielectric Union. To order the Right union and flange for your particular application indicate that you need a Dielectric Union specify the model, type, pipe thread size, and coating. An example in included to help illustrate this process.