FLEXI-JOINTS back to Product Range
INTRODUCTION
Flexi-joint coupled pipe-work may be temporary or permanent and will prevent the transmission of vibration and noise and allow flexibility in length and alignment.

Our Flexi-joints enable pipe work that has been cut to approximate length to be coupled together with only the aid of a spanner. This negates the need to weld, flange groove or thread in order to extend, repair or create pipe work for moderate system pressures.

It is also possible to assemble the flexi-joint in cramped locations and still retain a uniform leak-proof loading on the seal. Many years of successful application to thousands of pipe-work systems coupled with a progressive product development programme, enable us to offer this popular fitting for an ever-increasing range of applications.

FEATURES AND BENEFITS

  • Generates a positive seal even with angular misalignments of up to 4º.
  • Quickly assembled in cramped locations.
  • Dampens vibration and noise transmission.
  • Allows close grouping of pipe-work with no rotational constraint.

SIZES
To fit standard schedule tube or pipe outside diameters of 0.675 inches or 17.15mm up to 4.500 inches or 114.30mm.

MATERIALS

  • Standard - Mild steel sleeve zinc plated.
  • Non-standard - Mild steel sleeve coated in either Cupronickel or Durogard.
  • Non-standard - Copper sleeve.
TYPICAL FLEXI-JOINT

GASKETS AVAILABLE
We are able to offer you a choice of four types of gasket to suit specific temperature requirements. EPDM gaskets have been introduced as the softer material improves sealing on certain applications whilst maintaining wear resistance.
Gasket Material Minimum Operating Temperature Maximum Operating Temperature
NITRILE -30 deg C 120 deg C
VITON A -20 deg C 210 deg C
SILICON -60 deg C 200 deg C
EPDM -50 deg C 130 deg C

HOW IT WORKS
The principle of a compression joint is well proven, the resilient seal is constrained to contract onto the pipe diameter when the clamp is tightened and will seal on all normal pipe surfaces that are free from deep scratches gouges and dents. The friction grip will prevent slip at low pressures but will require external restraint at high pressure (see table).

APPLICATIONS
Flexi-joints are used in a wide variety of industrial marine locomotive and process applications for fast efficient installation of pipe-work carrying oil, water, solvents, steam and other gases. Many hose pipe couplings with wire or clip fastenings can be replaced with this protected seal joint which is preferred by many operators of power equipment and compressors, etc, also by heating, ventilating and air conditioning engineers. Agricultural workers, laying temporary irrigation or liquid insecticides systems prefer flexi-joint couplings to other forms of attachments. Applications are almost unlimited for this universal joint.

WHAT TO DO NEXT
Our Sales Department will be pleased to quote you for flexi-joints to suit your application. If you require assistance our Technical Department with its long experience of connection solution design will be only too happy to advise you.
Flexi-Joint
Outside
Diameter		 Flexi-Joint
Overall
Width		 Flexi-Joint
Overall
Length 		Self Restrained Pressure Rating Externally Restrained Pressure Rating
1.78 2.48 2.25 100PSI 300PSI
1.98 3.75 2.25 100PSI 300PSI
2.16 4.00 2.50 100PSI 300PSI
2.16 4.00 2.50 100PSI 300PSI
2.36 4.12 2.88 100PSI 300PSI
2.42 4.25 2.88 100PSI 300PSI
2.42 4.25 3.00 100PSI 300PSI
2.61 4.37 3.00 100PSI 300PSI
2.61 4.37 4.00 100PSI 300PSI
2.77 4.62 3.25 80PSI 200PSI
2.88 4.75 3.25 80PSI 200PSI
3.11 4.93 3.50 80PSI 200PSI
3.48 5.43 4.00 80PSI 200PSI
3.61 5.56 4.00 80PSI 200PSI
4.88 6.87 4.50 80PSI 200PSI
4.52 6.50 6.50 80PSI 200PSI
4.88 6.87 5.00 80PSI 200PSI
5.13 7.12 5.00 60PSI 150PSI
5.13 7.12 6.25 60PSI 150PSI
5.38 7.43 5.00 60PSI 150PSI
5.38 7.43 6.50 60PSI 150PSI
5.63 7.68 5.00 60PSI 150PSI
6.38 8.43 6.50 60PSI 150PSI
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