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Thread connection

** Pipe thread DIN ISO 228, Part 1**

  • Short code: G
  • Description: ISO 228-G1/8, G1/4, G1/2, G3/4, G1 etc.
  • Type of thread: internal thread cylindrical, external thread cylindrical (tolerance class A)
    Application:
    For mechanical connection of fittings and valves. The connection is sealed by pressing two sealing surfaces against each other outside the threads and by placing a suitable seal.

** Pipe thread according to EN 10226 ( former) DIN 2999 **.

  • Short code: Rp
  • Description: EN 10226-Rp1/2, Rp3/4, Rp1 etc.
  • Type of thread: Cylindrical internal thread

** Pipe thread conical**

  • Short code: NPT
  • Basis: ANSI B 1.20.1
    The National Taper Pipe (NPT) thread type is a conical pipe thread used for pipe fittings. The internal and external threads of the NPT are conical. The NPT thread is only self-sealing at low pressure and if it is not subjected to strong temperature fluctuations. Therefore, it is recommended to use additional sealing material.
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