STEKU ZSM Rising Main



Materials: 304SS or 316SS
Standard Sizes: DN50, DN65, DN80, DN100, DN150, DN200
Standard Lengths: 3m, 6m Special lengths available upon request


Rather than using traditional, time consuming, screwed or flanged ends to join steel riser pipes, Steku® have developed a unique quick coupling system which greatly simplifies the process of  installation or dismantling whenever a borehole pump requires inspection, overhaul or replacement. Steku®’s pipe couplings are fully integral to each stainless-steel riser pipe section rather than being welded on – as with other “ZSM”-type systems. Each end of the tube is roll-formed into a male or female component, as appropriate, and adjoining sections are secured together by sliding a stainless-steel spring coil into an annular space formed by corresponding slots in the coupling halves. The male end incorporates an anti-rotation lock to prevent twisting during pump start up and also a bead for locating the drinking water certified water tight O-Ring.

Couplings are suitable for depths in excess of 300m and with a pressure rating of 40bar (Tested to 100bar). The Steku® connection system was awarded the first place “Innovation Prize 2003 of the Nordhausen District” and has been installed worldwide in the years since. Further recognition was gained with the “Steel Innovation Prize 2006”.

Technical Data



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