NORMACONNECT®pipe couplings are an economical alternative to conventional pipe joining techniques for both plastic and metal pipes. All plain-ended pipes can be joined easily by hand. The ready to fit coupling is pushed over the pipe ends and then aligned and rotated to any fitting position. Tightening the two bolts alternately with a torque wrench is all it takes to make a safe fitting. Sealing reliability is also ensured under the condition of slight axial misalignment,angular deflection and even gaps between pipe ends of up to 35 mm. Pressure surges,vibration and related noise are absorbed to a considerable extent. Economy is guaranteed due to short assembly times without the necessity of prior pipe alignment or treatment of pipe ends; in addition,the pipe couplings are reusable.