Pronal has developed a range of “tailor-made” mechanical stoppers for testing the tightness of Velan Rateau valves on the primary circuits of nuclear power plants. This range of stoppers has been designed to test the tightness of the swing mechanism on the sealing surfaces. Unlike the “Bouvier Darling” system, these stoppers for testing “Velan Rateau” valves are not inflatable. They are equipped with a system of plates covered with PMUC rubber and an inter-seal for checking the tightness of the stopper. This system is mounted on a mechanical fork which is itself equipped with a stop to facilitate installation and removal. It is these stoppers which equip the METEOR® test bench. This test bench is used to measure the tightness of valves at a constant pressure. It can provide both instantaneous and averaged measurements of any leakage flow. Hydraulic testing is performed at a pressure of 10 Bar. ADVANTAGES Reliability •Completely air/watertight •Customised valves Safety •Stopper operation can be verified by making inter-seal measurements •PMUC-certified materials Handling •Rapid, easy installation •Reusable •Delivered in an aluminium case with foam padding DETAILED INFORMATION •Material: NBR PMUC •Technique: hot vulcanisation in a vacuum autoclave •Dimensions: DN80/DN100/DN150/DN200/DN250/DN300 •Form: Conical •Mechanic •Temperature resistance: -25/+85 C° •Test pressure: 10 Bar
Технические характеристики
CharacteristicsTypeinflatable, mechanicalApplicationsfor watertightness testsMaterialrubberOther characteristicsconical
