Rubber Expansion Joint Specification Form

  • Your Company

  • Size

  • Nominal pipe size (I.D.)
  • Dimension between mating flages. Also known as: Flange-to-flange, OAL or Takeout.

  • Flowing Medium

  • Indicate fluid being piped. Refer to our "Chemical/Rubber Guide" for elastomer compatibility.
  • Indicate if liquid, gas, slurry, solids, etc.

  • Temperature of Flowing Medium (F)
    Indicate both operating and maximum temperatures at the expansion joint

  • Note: See Table: "Comparative Properties of Typical Proco Products, Inc. Elastomers"

  • Pressures

  • Operating Pressure of the System
    Actual pressure in which system works in normal conditions (use PSIG and "Hg)

  • Design Pressure of the System
    Highest/most severe pressure expected during operation (use PSIG and "Hg)

  • Surge Pressure of the System
    Increased pressure due to pump starts, valve closings, etc. (use PSIG and "Hg)

  • Test Pressure of the System
    Hydrostatic test used to demonstrate system capability (use PSIG and "Hg)

  • Constant, intermittent, shock, pulsating, etc.

  • Movements

  • In inches as a result of pipe extension-expansion
  • In inches as a result of pipe contraction
  • In inches
  • In degrees
  • In degrees

  • Miscellaneous

  • Indicate specific standard such as: ANSI,DIN, JIS, B5, Navy. If special, provide: Flange O.D., Bolt Circle, Number & Size of Holes
  • In inches
  • Indoors or outdoors
  • Are required on all installations. Reusable, they need not be ordered with replacement or spare expansion points
  • Are recommended for use in all expansion joint applications. Control units must be used when piping support or anchoring is insufficient