Page 480 of 561

AC/OX CUTTING/WELDING/BRAZING

Gas Hoses

UNITOR’s hoses for Acetylene and Oxygen are specially made for use with welding and cutting equipment. The hoses comply with the International norm ISO 3821 specifications for welding hose:

for welding gases. Blow new hoses clean internally before connecting to blowpipes. Nitrogen or another inert gas should be preferred to blow through Acetylene and Oxygen hoses. Never use compressed air, which may contain oil.

Requirements:

Keep hoses away from strong heat and extreme cold, oil and grease, chemicals, and from slag and sparks from electric welding, gas welding or Oxygen cutting. Avoid undue stretching and kinking of hoses. Hanging hoses must be supported at suitable intervals.

Maximum working pressure

Test pressure

Minimum bursting pressure

20 bar 40 bar

60 bar

Oxygen hoses are colour-coded blue. Acetylene hoses are colour-coded red. Unitor’s product range comprises the following hose dimensions: NB: Gas hoses are measured on their internal diameter.

When gas hoses are not in use they must be coiled and hung up so as to avoid, as far as possible, the entry of damp or dirt.

Description Product no.

Faulty hoses

Twin gas hoses, blue/red Twin gas hoses, blue/red

Gas hose, red

Inspect hoses at regular intervals. Hoses of doubtful quality or condition should be scrapped.

Gas hose, blue Gas hose, red Gas hose, blue Gas hose, black

6mm (1/4) AC + OX/m 9,0 mm (3/8”) AC + OX/m 6,3 mm (1/4”) Acetylene/m 6,3 mm (1/4”) Oxygen/m 9,0 mm (3/8”) Acetylene/m 9,0 mm (3/8”) Oxygen/m 6,3 mm (1/4”) Argon/m

176-526434 176-624312 176-175554 176-175562 176-175539 176-175547

176-576157

6 mm (1/4”), hose is adequate for the gas consumption for all blowpipes and cutting nozzles in the welding and cutting set UCT-500.

Normal hose lengths are 5 or 10 meters. If long hoses or equipment requiring greater gas flows than 8.000 nI/h (normal liters per hour) are used, 9 mm (3/8”) hoses are recommended. For medium and large gas consumption the supply pressure must be increased when longer hoses and/or smaller hose diameters are used.

Do not use hoses that have been damaged by flashback or hose fires. Check that the rubber is supple and without cracks (do this by bending the hose).

Check the hoses for leakage by dipping them in water while they are under normal pressure. Hoses must never be repaired by patching. Repair a leak immediately by cutting off the damaged

part.

The drum for gas hoses takes up to approximately 100 m. of twin hose and is fitted with brackets for bulkhead mounting.

Description

Product no.

Drum for gas hose

195-175729

5.01

Do not use gas hoses for other purposes, e.g. for compressed air or propane, and do not use air hoses 479