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NIBCO 5803-2 Series ABS DWV Pipe Fitting, Adapter, Schedule 40, Spigot x NPT Female

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Product Specifications
Item Shape
Color Name
Material Type
Acrylonitrile Butadiene Styrene (ABS)
Pressure Rating Class
Not Rated
Brand Name
Manufacturer Series Number
Upper Temperature Range
180  Degrees Fahrenheit
Specification Met
CSA B181.1 , ASTM D2665 , ASTM D3965 , ASTM D2661 , ASTM D3311 , UL Listed 94V-0 , NSF/ANSI Standard 14 , NSF U.P. Certified
Connector Type
Spigot x NPT Female
Style Name
Socket Weld
System of Measurement
LowerTemperature Range
-40  Degrees Fahrenheit

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Key Features

  • Adapter for connecting pipes or fittings of different types
  • Spigot on one end and female National Pipe Taper (NPT) threads on the other for connecting two pipes with different ends
  • ABS-DWV for chemical and corrosion resistance, performance under wide temperature ranges, and light weight for quick assembly
  • Smooth interior finish for reduced friction and material buildup
  • Meets specifications ASTM D2661 and D3311 for quality assurance

Product Description

The NIBCO 5803-2 schedule 40 adapter pipe fitting is made of acrylonitrile butadiene styrene (ABS) for use in drain, waste, and vent systems (DWV) and has a spigot connection and a female National Pipe Taper (NPT) threaded connection. This adapter fitting connects pipes or fittings with different end types, diameters, or materials. It has a male spigot connection on one end for fitting into a female unthreaded pipe and female NPT threads on the other end for connecting to a male threaded pipe. The NPT threads create a tighter seal than straight threads, and the spigot end has the same diameter as the pipe it connects to, minimizing turbulence and creating a tight seal. This schedule 40 (standard wall) fitting is made of acrylonitrile butadiene styrene (ABS) for use in non-pressure residential and commercial drain, waste, and vent (DWV) sanitary systems. ABS resists most household chemicals and many corrosive and abrasive industrial liquids, performs under a wide temperature range, has high impact resistance, and is lighter in weight than metal for simple installation above or below ground. This fitting is compatible with schedule 40 ABS-DWV and can be connected to other materials such as steel, copper, or cast iron using transition fittings. This fitting provides superior flow to metal because of its smooth interior finish, which reduces friction and inhibits buildup of materials. This fitting meets American Society for Testing and Materials (ASTM) D2661 and D3311 specifications for quality assurance.

Pipe fittings are components used for connecting, terminating, controlling flow, and changing the direction of piping in many different industries. When purchasing pipe fittings, consider the application, as this will affect material type, shape, size, and required durability. Fittings are available threaded or unthreaded, in many shapes, styles, sizes, and schedules (pipe wall thickness).

NIBCO manufactures flow-control products for construction, industrial, fire protection, and irrigation applications. The company, founded in 1904, is headquartered in Elkhart, IN, and meets International Organization for Standardization (ISO) 9001 standards for quality assurance.

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