Purple Valves
PRPLZ304

Thread Flange

A threaded flange with an internal tapered thread that screws onto the pipe, allowing a bolted connection without any welding.

Size1/4“ to 2”PressureANSI Class 150 to 2500BodyThreaded Flange
Overview

The threaded flange carries an internal tapered thread, typically to ASME B1.20.1 NPT, so it can be screwed directly onto matching male pipe to create a bolted flange joint without welding. Built to ASME B16.5 dimensions, it suits situations where welding is impractical or prohibited, such as some utility, low-pressure and hazardous-area lines, and it allows the flange to be removed for maintenance. The machined raised or flat face takes a standard gasket, providing a serviceable connection on small to moderate diameter piping.

Technical Detail

Specifications

Size Range
1/4“ to 2”
Pressure Rating
ANSI Class 150 to 2500
End Connections
NPT threaded bore with Raised Face (RF) / Flat Face (FF)
Body Material
ASTM A105 carbon steel / ASTM A182 stainless steel
Body Style
Threaded Flange
Applications
Non-welded utility and low-pressure piping, hazardous areas, water and air service
Design Standard
ASME B16.5
At a Glance

Key Features

  • Internal NPT thread screws onto pipe with no welding
  • Removable for maintenance and rework
  • Suited to areas where welding is restricted
  • Machined sealing face for standard gaskets
  • Carbon and stainless steel options

Options

  • Faces: RF, FF
  • Classes: 150, 300, 600, 900, 1500, 2500
  • Materials: A105, A182 F304/F316

Standards & Certifications

  • ASME B16.5
  • ASME B1.20.1
  • ASTM A105 / A182
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