The high-pressure inflatable pipe plug DN 300–400 works with an inflation pressure of 6 bar and holds a back pressure of up to 3 bar. It safely closes pipes and sewers with a diameter of 285 to 410 mm. Its round body is made in one piece without a longitudinal seam, from very robust natural rubber with a fabric insert.
The material adapts well to all pipe materials, and slight unevenness is no obstacle. Strong profiled grooves give a secure hold in pipes and sewers. The plug is inflated through the compressed air coupling.
Technical data
- Nominal size: DN 300–400
- Application range: pipe Ø 285–410 mm
- Inflation pressure: 6 bar
- Max. back pressure: 3 bar
- Overall length: 850 mm
- Weight: 11 kg
- Material: natural rubber with fabric insert, round body in one piece without longitudinal seam
- Connection: compressed air coupling
- Temperature range: approx. -30 °C to +80 °C
- Weatherproof, resistant to service water and waste water, partly resistant to chemicals (see list below)
The product photo is an example image. All plugs undergo regular quality checks. Subject to technical changes; design and dimensions may differ.
Do not exceed the maximum inflation pressure.
Chemical resistance
Resistant: boric acid, brake fluid (type W), butanol, calcium hydroxide, diethylene glycol, ethanol, ethylene glycol, glycerine, magnesium sulfate, methanol, nitric acid, potassium chloride, sodium chloride, sodium phosphate, sodium sulfate, stearic acid, vegetable oils, water.
Limited resistance: acetaldehyde, animal fats, arsenic acid, benzaldehyde, sulfuric acid.
Not resistant: ASTM oil No. 1, ASTM oil No. 2, ASTM oil No. 3, benzene, bromobenzene, butyl acetate, chloric acid, chlorobenzene, chloroform, chromic acid, cyclohexanol, cyclohexanone, diesel fuel, diethyl ether, ether, hexane, methacrylate, methylene chloride, mineral oils, n-heptane, naphthalene, nitrobenzene, palmitic acid, petrol, phenol, phosphoric acid, sodium hypochlorite, styrene, trichloroethylene.
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