Closing balloons series UBF-N are manually loaded balloons with a protective jacket and reduced flammability filled with inert gas designated for temporary closing of gas pipelines. 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 of reduced flammability. For the reduced flammability technical specification following below. 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 deliberately modified as may be required by the customer. (following 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.
RANGE OF APPLICATION AND SPECIFICATIONS
Closing pipeline material:
Steel, cast iron, PE, other materials after consultation with the manufacturer
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:
1100 N
- Electrostatic properties:
Specific surface resistance 105 Ω compliance with CSN EN 1149-5:2008
- Fortection in case of short-term exposure to flame:
A1 – compliance with CSN EN ISO 11612:2009
- Fortection against radiating heat:
C1 version level to CSN EN ISO 11612:2009