Klamflex - Pipe Fittings Manufacturer for Worldwide Distribution

Technical Data
>> Working Pressure
>> Expansion & Contraction
>> Temperature
>> Shear Strength
  >> Recommended Bolt Torque  
>> Pipe End Preperation  
>> Angular Deflection
  > > Lateral Displacement
  >> Ground Settlement
  >> Setting Gaps
>> Product Storage
  >> Cathodic Protection
>> Anchoring / Supporting Pipes
>> Fitting Instructions Up to
>> Fitting Instructions Above 300mm
  >> Fitting Ranger Products
  >> Material Specifications

Special Ended Fittings

KLAMFLEX Special Ended Steel Fittings are available in various fitting combinations, such as Bends, Tees, Reducers, and Crosses. These fittings are manufactured by welding a KLAMFLEX Half Coupling to the ends of a steel fitting. Bolts are used in the coupling joint; this ensures easy replacement of damaged fasteners. KLAMFLEX makes use of a profile plate that is welded to the steel fitting or lugs that are welded to the coupling sleeve to accommodate the tightening process. With either option only one weld is required to fit the half coupling to the fitting. We offer the dedicated sleeve type or ranger sleeve type arrangement. Installation is effected by simply inserting the plain ended pipe into the KLAMFLEX Half Coupling and tightening the studs. The use of these fittings will result in significant cost savings and ease of installation, as only one piece of equipment is being purchased, instead of separate fittings and coupling.

High Pressure Couplings

KLAMFLEX is currently undertaking an exercise on the design of the existing dedicated product range of Couplings, Flange Adaptors and Dismantling Joints that will enable Klamflex to supply high pressure items, in excess of a rating of 40 bar. This would include pressure diameter ratios of 50 Bar up to 2000nb, 64 Bar up to 1600nb and 100 bar up to 1400nb. Where necessary component material will be upgraded with regards to the mechanical and chemical composition as well as thicker modified and re-engineered sections would be used, to achieve the above.

KLAMFLEX Couplings and Flange Adaptors can be manufactured to suit almost any pipe outside diameter or flange drilling.

Information given in our catalogue generally only refers to Couplings for standard size pipe. Couplings and Flange Adaptors are manufactured to suit all standard pipe sizes. Where Couplings are required for pipes in non-standard sizes and material or where standard outside diameters are not exact, e.g. GRP and AC pipe, details of the actual pipe OD's and tolerance should be stated for consideration by KLAMFLEX Pipe Couplings.

Design consideration should be given to the surface finish of pipe materials. By its very nature the KLAMFLEX Coupling system relies upon good surface contact of the sealing rings, and consideration must be given to pipe end preparation on pipes with naturally rough or uneven surface finish. Where surface dressing is required to remove weld beading, care must be taken not to overdress the pipe end causing pitting or flat spots. In general the recommendations of SABS 719-1971 and BS 534-1990 section 15 ensures a satisfactory surface finish.

Ovality, especially in larger diameter pipes, can frequently be rectified either by jacking out, if the ovality is severe, or by rounding out by selective bolt tightening to give a uniform angular gap. Care must be taken when jacking so that internal finish is in no way damaged. Pipes which have local stiffening near the ends are sometimes impossible to correct for ovality.

Most rigid and semi-rigid pipe materials can be joined with KLAMFLEX Couplings, e.g. steel, grey and ductile iron, asbestos cement, uPVC, GRP, concrete, etc. Some materials such as GRP need special consideration due to the structural strength of the material. KLAMFLEX Couplings can be used on both above and below-ground pipes but different design criteria apply. The following sections give some guidance on how to get the best use from KLAMFLEX Products.
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