Closing balloons series UBF-S are manually loaded balloons filled with inert gas for temporary gas pipeline closing. The working part of the closing balloon manufactured for a specified internal diameter of the closed pipeline consists of a rubber tube with a protective permanently antistatic cloth jacket. The protective jacket flammability is not reduced and therefore these closing balloons are designated primarily for applications where the cloth jacket can be exposed to thermal stress. The working part is flexibly fixed to the loading part. As a rule, the loading part consists of a loading rod with a rubber plug, identification plate and fitting set. The structure of components of the loading part of individual standard manufactured balloons of this series is described on the following sheets of the catalogue, if necessary, it may be arbitrarily modified as may be required by the customer. (Following the sheet the sheet 2.2-1). For maximum safety, the shelf life of these closing balloons is limited. The service life (30 months, as a rule) is shown on the identification plate. The balloon may be sent to the manufacturer for the overhaul after the lapse of the service lifetime.
APPLICATION RANGE AND SPECIFICATIONS
Closing pipeline material:
Steel, cast iron, PE, other materials after consultation with the manufacturer
Interior diameter of closed pipelines:
50 to 1400 mm - following type catalogue sheet
Media:
natural gas, non-aggressive gases, other media, after consultation with the manufacturer
Pressure load:
- Maximum positive pressure in the closed pipeline - following the type catalogue sheet
- Maximum positive pressure in the balloon - following the type catalogue sheet
Working temperature:
+5 to +28 °C
Protective jacket:
- Tensile strength:
500 N
- Electrostatic properties:
Specific surface resistance = 3.2, 2.3 .104 Ohm, compliance with CSN EN 1149-5:2008