In 1949, Mueller Water Products patented the tamper-proof gas valve which included several tapered pipe threaded holes as part of the design. That same year, Jarvis Cutting Tools began producing Pipe Taps manufactured to the National Pipe Thread specifications developed by the American Standards Association thirty years earlier.

We continue to be the leader in the pipe tap industry manufacturing application specific cutting and roll forming taps to meet all pipe thread standards including National and British Whitworth.

Pipe thread Applications and Materials Jarvis is tapping:

  • A105
  • Aluminum Die Cast
  • Brass
  • Carbon Steel
  • Cast Bronze
  • Connecting Rods
  • Copper
  • Couplings
  • Drops
  • Elbows
  • Engine Blocks
  • Gas Fittings
  • Gray Cast Iron
  • Hydraulic Fittings
  • Locomotive Engines
  • Malleable Iron
  • Reducers
  • Steel Forgings
  • Tees
  • Unions
  • Utility Controls
  • Valves
  • 304 & 316 SS

Standard Pipe Tap Catalog