Sleeves pressure head with a textile framework (GOST 18698-79)
Are applied as flexible pipelines to giving under pressure of liquids, saturated steam, gases and bulks.
Sleeves are efficient in regions of a temperate, tropical and frigid climate.
Depending on purpose of a sleeve are made the following types:
Class "B" - for gasolines, kerosene, mineral oils on an oil basis. Are efficient at t ° from-35 to +70 °C (for gasolines, kerosene) and from-35 to +100 With (for mineral oils).
Class "B" - for water technical (without additives), solutions of inorganic acids and alkalis concentration to 20% (except solutions of nitric acid). Are efficient at t ° to +50 °C.
The class "VG" - for hot water. Are efficient at t ° to +100 °C.
Class "G" - for air, carbon dioxide, nitrogen and other inert gases. Are efficient at t from-35 to +50 °C.
The class "Couples 1" - for saturated steam. Are efficient at t ° to +143 °C.
The class "Couples 2" - for saturated steam. Are efficient at t ° to +175 °C.
Class "Sh" - abrasive materials (sand from sanding devices) and subacidic or alkalescent solutions for plaster and paintings.
Are efficient at t ° from-35 to +50 °C.
Symbol of sleeves pressure head with a textile framework: GOST 18698-79 B(I)-10-20 sleeve, where: B (I) — a sleeve class petrol-resistant; 10 — pressure working (KGF/cm2); 20 — the internal diameter of a sleeve (mm)