DESIGN CONSIDERATIONS FOR PEXGOL FITTINGS

General considerations

  • Use only fittings approved by Pexgol and listed in the Engineering Guide.
  • Service limitations (as relevant) for each type of fitting are specified in the Engineering Guide.
  • When designing Pexgol pipes and fittings, the designer can utilize the flexibility of the Pexgol pipes & elbows. However, Electrofusion and Mechanical fittings should be regarded as rigid items.
  • Special care should be exercised in order to prevent excessive bending moment from being exerted on the fittings due to forced installation
  • Use special Fixpoint clamps before and after the fittings where required (see Non-restrained fittings).
  • Mechanical fittings might cause local reduction of the inner diameter at pipe ends.
  • Drawings of the fittings are supplied on request.
  • For further questions, please consult Golan’s application engineer. esign Considerations for Pexgol Fittings

Pre-fabricated Pexgol elbows

  • Prefabricated elbows are available in all pipe classes with diameters up to 630 mm.
  • The standard bending radius of the elbows is approximately R= 3D OR R= 1.5D for 450 or 900 elbows.
  • The working pressures and temperatures are the same as the Pexgol pipe class from which the elbow is made.
  • Order elbows with plain ends for either flanged couplings or electrofusion fittings.
  • Elbows with flared ends with or without flanges are available.
  • Flared end connectors can be used throughout the entire range of allowable working temperatures and pressures.
  • Install special Fixpoint clamps before and after each flared end.

Pexgol spigot reducers

  • Pexgol spigot reducers of all sizes and all pipe classes are available on request
  • The working pressures and temperatures are the same as for the Pexgol pipe class.
  • The Pexgol reducers are supplied with flared ends, with or without flanges.
  • Use special Fixpoint clamps before and after each flared end.

Pexgol spacers and special reducers

  • Pexgol spacers of all sizes and are available on request.
  • Use special Fixpoint clamps before and after the flared ends.

Pexgol instrument tees

  • Pexgol instrument tees of all sizes are available on request.
  • The inlet is made of 316 stainless steel. Other corrosive resistant metals can be specified.

PEX-lined steel fittings

  • Pex-lined steel fittings can be used as a part of any Pexgol pipe system. Their working pressures and temperatures are usually higher than working pressures and temperatures of the Pexgol pipes.
  • The Pex-lined steel fittings are available in nearly any size and shape.
  • The minimum length of each fitting is indicated in the Fittings Catalog. This length can be reduced after consulting Golan Plastic Products.
  • It is possible to order a non-standard fitting which is a combination of standard fittings, or a standard fitting with longer legs.
  • The maximum allowable length for any such fitting is 2200 mm x 2200 mm.
  • PEX-lined steel fittings can be used in the following cases:
    • A fitting that is not available as an all-Pexgol fitting is required.
    • The all-Pexgol fitting is too long.
    • A special shape is required.
  • All the PEX-lined steel fittings can be connected to the flared ends of the Pexgol pipes without an additional gasket.
  • All the PEX-lined steel fittings must be fully supported when installed on pipe bridges.

Pexgol Pipes with flared ends

  • Pexgol pipes up to 160 mm, in lengths according to the tables for transportation in coils, are available with flared end and metal flanges.
  • Larger diameter Pexgol pipes (up to 630 mm) can be ordered in any length up to 11.5 meters to fit into 40 ft. containers) with one or two flared ends.
  • Flared ends connect two Pexgol pipes or a Pexgol pipe to a fitting.
  • The sections with flared ends are produced with a tolerance of +/- 10 mm in length
  • No additional gaskets are needed.
  • Tightening the flanges of the flared end connectors does not require specific torque values. Simply tighten the bolts evenly around the flange until all bolts are tight.
  • The flanges are supplied according to industrial standard ASA 150. Other flanges are available by special order.
  • A flared end connection can be used throughout the range of allowable working temperatures and pressures.
  • Prefabricated Pexgol elbows with flared ends are also available.
  • Use special Fixpoint clamps before and after the flared.

PE100 Electrofusion fittings

  • The PE100 electrofusion fittings must be protected in the following cases:
    • Above ground installations in extremely low temperatures.
    • Underground installations without sand embedding.
  • In case of above-ground installations, Pexgol pipes connected to HDPE fittings must be axially restrained in order to protect the HDPE fittings. Take special care with elbows, Tee pieces, and so on.

Pex2Pex electrofusion couplers

  • Pex2Pex electrofusion couplers are used for the same pressure rating as Pexgol pipes SDR 11.
  • The couplers are not UV resistant and must be protected from UV light.

Special high temperature electrofusion couplers

  • Special high temperature electrofusion couplers for all pipe sizes can be specified on request. Please consult Pexgol’s application engineer.

GP flanged couplings

  • Available from 63mm (with 2” flange) to 630mm (with 24” flange).
  • All couplings comply with ASA 150 flange standard and some of them comply with other international standards.
  • Pexgol flanged couplings are suitable for the full range of allowable working temperatures and pressures of Pexgol pipes.
  • In above ground applications, use special Fixpoint clamps before and after the fittings
  • In some cases, the ID of the Pexgol pipes might be reduced locally by the Pexgol flanged coupling.

Brass saddles

  • Available for Pexgol pipes from 32 mm to 160 mm.
  • BSPT threaded outlets
  • Suitable for the full temperature and pressure ranges of Pexgol pipes.

Stainless Steel Saddles

  • Available for Pexgol pipes from 110mm to 630mm.
  • Flanged or threaded outlets (internal thread).
  • Maximum outlet diameter – up to half of the pipe’s outer diameter.
  • The saddles are available with a special rubber coating over the flange and neck to protect from corrosive liquids to which stainless steel is not resistant.
  • Stainless steel saddles can be used throughout the range of allowable working temperatures and pressures for Pexgol pipes.
  • In above ground applications, use special Fixpoint clamps before and after the fittings.

Victaulic, Bruno and Aquafast fittings

  • Victaulic, Bruno and Aquafast fittings for HDPE pipes are approved for use with Pexgol pipe classes 10 and higher pressure classes.
  • In above ground applications, use special Fixpoint clamps before and after the fittings.

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