VENTAIX also supplies a variety of accessories for rail tank cars, such as valve indicators which show that the purge valve is open or closed. One of the latest products developed is an innovative threaded cap, which greatly reduces the risk of drip leakages. The series KD-550 seal system for 5-1/2” threaded caps prevents the chance of dripping by using a specific double seal, which can be installed within the existing cap on standard rail tank cars. The seal tolerates surface irregularities and can be made leak–proof by simply tightening the cap by hand.

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