TPi March 2015

Fi t t ings

US Coast Guard acceptance for mechanical fittings

Other features include 360° external radial swage fitting on to the tube assembly; and an inspection gauge to ensure a proper swage. The fitting can be re-swaged multiple times. The Pyplok tool has a mechanical stop, to prevent over-swaging of the fitting. The tool is lightweight and fits in tight confined spaces. Pyplok fittings can be installed on seamless or welded, hot or cold rolled tube. Sizes range from ¼" to 2" OD tube, ¼" to 2" NPS pipe, and 6 to 60mm metric tube.

said Chris Peitchinis, vice president of global business development at Pyplok manufacturer Tube-Mac Piping Technologies. “We believe that Pyplok is the most economical and efficient way of joining pipes or tubes. The fittings are installed cold and safe without the hazards of welding. It reduces costs, enhances quality, and provides a leak-free, reliable connection.” Pyplok fittings have an ‘outer O-ring seal’, also called an environmental seal, that prevents sea water or other environmental elements from entering between the tubes and fitting, preventing any corrosion at the interface between the pipe and the fitting.

The United States Coast Guard (USCG) has issued an acceptance letter for Pyplok ® mechanical fittings, approving their use in a wide range of applications on board vessels. Pyplok mechanical fittings, available in carbon steel, stainless steel and copper nickel, are now approved for use in the following shipboard applications, as afforded by 46 CFR 50.20-50(b): machinery sea water cooling inboard of the sea valve; bilge and ballast systems; cargo oil systems; fire main/sprinkler/ foam systems; fuel and lubricating oil systems; compressed air; and hydraulic systems. “The USCG acceptance letter is something we have been working toward and are excited to receive,”

Tube-Mac Piping Technologies Ltd – Canada

info@tube-mac.com www.tube-mac.com

Clamps for demanding requirements With the highly flame resistant polyamide material PAV0, Stauff can produce plastic clamps for securing pipes, hoses, cables and other building components that meet the toughest relevant fire protection requirements in the European railway vehicle norm DIN EN 45545-2:2013. The material surpasses the stipulated limit values for seals, hoses, cable channels and other components in the R22 set of requirements for hazard level HL3, which apply to interior applications. The grading in category HL3 allows the use of fasteners/fixing elements according to all of the norms

covering classes of construction and operation for railway carriages.

The verification of the required material properties relevant to the classification was achieved within the scope of varying test methods, which were carried out by independent test institutes: for components that are handled in the R22 requirement set – in addition to the oxygen index, or the ascertainment of the oxygen limit value up to the material’s point of combustion – the low smoke density and toxicity are of particular importance. If a material meets the R22 requirement set, it can also be used in the areas covered in requirement sets R23, R24 and R26. PAV0 is processed using the injection moulding method. In addition to standard block clamps as per DIN 3015, special customised designs based on customer specifications or the company’s own development can be created.

Standard block clamps as per DIN 3015 made of PAV0

Walter Stauffenberg GmbH & Co KG – Germany

sales@stauff.com www.stauff.com

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Tube Products International March 2015

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