Products

Fittings and joints

PE100 fittings from 32 mm to 1,200 mm and the jointing systems that connect them: butt fusion and electrofusion for permanent, self-restrained joints, flanges, compression fittings and saddles where a joint has to come apart.

HDPE fitting with flanged connections on a pipeline

HDPE Tee

PE100 · DN110

Drag to rotate

PE100 fittings and jointing systems on DN110 pipe. Fittings: elbows, tee, cross, reducer. Permanent joints: butt fusion, electrofusion. Detachable: flange, compression fitting, Tak clamp, saddle and holderbat. Drag to rotate, switch to the technical drawing for dimensions.
Part 01

Fittings

01

Standards

Fittings
EN 12201, ISO 4427, ES 1832
02

Fittings range

Sizes are outside diameters in mm. Fabricated fittings are made from pipe segments; injection fittings are moulded.

Fabricated fittings, butt fusion

Fabricated fittings, butt fusion
FittingSize range, mm
Elbow 11.25°110 to 1,200
Elbow 22.5°110 to 1,200
Elbow 30°110 to 1,200
Elbow 45°110 to 1,200
Elbow 60°110 to 1,200
Elbow 90°110 to 1,200
Equal tee110 to 1,200
Reducing tee110 to 1,200, branch 32 to 1,000

Injection fittings, butt fusion

Injection fittings, butt fusion
FittingSize range, mm
Tee 90°50 to 315
Reduced tee63 × 50 to 250 × 200
Elbow 45°32 to 315
Elbow 90°32 to 315
End cap32 to 1,200

Adaptors, reducers and couplers

Adaptors, reducers and couplers
FittingSize range, mmJoining
Puddle flange50 to 1,200Butt fusion
Flange adapter, long type32 to 630Butt fusion and bolted flange
Flange adapter, short type710 to 1,200Butt fusion and bolted flange
Reducer50 × 32 to 1,200 × 1,000Butt fusion
Electrofusion coupler32 to 355Electrofusion

Flanges, bolted

Flanges, bolted
FlangePN 10, mmPN 16, mm
Steel flange200 to 1,20032 to 1,200
HDPE coated steel flange200 to 31532 to 315
Blind flange, steel200 to 1,20032 to 1,200

Source: ALROWAD fittings list.

03

Transition fittings

PE to brass, male or female thread
32 mm to 90 mm
Part 02

Joints

04

Fused joints

HDPE pipe has served municipal and industrial water networks for about 50 years. A heat-fused joint is monolithic: it carries the same pressure as the pipe and does not leak.

05

Jointing systems

Jointing systems divide into permanent and detachable. The schematic shows the available options.

Schematic of permanent jointing (butt welding, electrofusion) and detachable jointing (compression fittings, flanging, tail system, saddles)
Permanent jointing: butt welding, electrofusion. Detachable jointing: compression fittings, flanging, tail system, saddles.
06

Butt fusion parameters

Pipes and fittings are butt fused to the single high-pressure procedure of ISO 21307. Heat soak time, bead size and cooling time scale with the nominal wall thickness eₙ. Pick a pipe to read the values for it.

Outside diameter
Pressure class
Wall thickness eₙ, PE 100
10mm
Minimum heat soak time
100 to 120s
Minimum bead size after heating
2.5mm
Minimum cooling time in the machine
4.3min
Force on the pipe faces at 0.52 MPa, before drag
1.6kN

Gauge pressure on the machine depends on its cylinder area: convert the force with the machine maker's table, then add drag pressure.

Phases, parameters and values, ISO 21307:2017, single high-pressure fusion jointing procedure
PhaseParameterValueUnit
1 and 2Heater plate temperature215 ± 15°C
1Bead-up pressure0.52 ± 0.1, plus drag pressureMPa
2Minimum heat soak time(11 ± 1) × eₙs
2Heat soak pressure0 to drag pressureMPa
2Minimum bead size after heating1 + 0.15 × eₙmm
3Maximum heater plate removal timeSee ISO 12176-1s
3Maximum time to reach fusion jointing pressureNot specifieds
4Fusion jointing pressure0.52 ± 0.1, plus drag pressureMPa
5Minimum cooling time in the machine under pressure0.43 × eₙmin
6Minimum cooling time out of the machineA cooling time before rough handling may be recommendedmin
  • Bead-up pressure is held until a bead shows all round the circumference of both pipe ends. The pressure is then dropped for heat soak.
  • During heat soak, use the lowest pressure that keeps the pipe in contact with the heater plate, up to the current drag pressure.
  • Drag pressure is the pressure needed to move the machine carriage and pipe; it is added to the bead-up and fusion jointing pressures.

Source: ISO 21307:2017, single high-pressure fusion jointing procedure, Table 3. Wall thickness from the ALROWAD PE 100 data sheet.

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