Fire metal hose

1、 Product usage and characteristics

Shallow annular corrugated tube, with high rigidity, is only suitable for static application conditions and is sealed with a gasket. It is generally used for sprinkler pipelines in fire protection piping systems.

2、 Applicable working conditions

Nominal diameter: DN25mm
Product length: 200mm -6000mm
Nominal pressure: 1.6MPa
Working temperature: -50 ℃ -450 ℃
Media: liquids, gases, etc.

3、 Structure and Materials

One end DN15 British internal thread joint, one end DN25 British external thread joint	One end DN15 British internal thread joint, one end DN25 British pipe thread nut

　
1. Bellows: Stainless steel 304, 316L, 321, etc
2. Sealing gasket: asbestos rubber, polytetrafluoroethylene
3. Connectors: Copper chrome plated, code steel galvanized, stainless steel

4、 Product code example

5、 Installation precautions

1. During welding operations at the construction site, the surface of the metal hose should be protected to prevent welding slag and arc ignition from burning the metal hose.
2. Twisting installation of metal hoses is strictly prohibited.
3. It should not be bent along the root of the metal hose, and there should be no dead bends.
4. The medium used must not be corrosive to the corrugated pipe material, and the chloride ion content in the medium should be ≤ 25PPM.
5. Do not use chlorine containing cleaning agents or steel wire brushes to remove dirt from metal hoses..