Inflatable shutter

for watertightness testsrubberdouble

Pronal has designed an inflatable stopper system for implementing hydraulic tests on superheater dryer units (GSS). This system is a combination of two solutions: An inflatable stopper which plugs the outlet on the side of the VISM valve (OHP), And on the other side, an inflatable jack mounted on a metal support is inserted into the outlet of the GSS grille. This solution can be completely dismantled. This removable system is installed via a manhole with a 400 mm diameter. The test pressure reaches around 25.5 bar. Testing is validated on-site by a certifying company. This inflatable pipe plug is mostly used on nuclear sites. The GSS hydraulic testing serves to certify the strength and tightness of the GSS grille. This Pronal inflatable stopper system reduces outage time by avoiding cutting/welding pipework that could also include the fitting of welded caps. Detailed information Material: Cylinder ring in NPVC SBR (Styrene Butadiene Rubber) for the OHP2 Technique: hot vulcanisation in a vacuum autoclave Dimensions: Dia. 1150 mm for the cylinder Dia. 920 mm for the stopper Form: cylindrical Inflation: by water Max. inflation pressure: 38 bar for the inflatable seal 35 bar for the stopper