The hoses connecting cylinder with manifold shall be in line with IS 6044 (Part 2) and shall be used for connecting the cylinder to manifold. The hoses shall be as per IS 9573 (Part 1).

The design, material and construction of hoses shall be suitable for grade of LPG. Currently, it is envisaged that LPG as per IS 4576, shall be supplied.
The flexible hose/pigtail shall be in the same room and its length shall not exceed 2 m. Flexible hose/pigtail shall not pass through doors, windows, walls, ceiling (or) floors. The pigtails shall be accessible for inspection.

The hoses shall be hydro tested at 25 kg/cm2 pressure once in six months. and proper records of testing, etc, shall be maintained.