Pipe renovating system and method

A pipe renovating method, comprising the steps of:

• pumping a mixture of pressurized gas and particles of abrasive material into a first end of a pipe;
• simultaneously applying suction to a second end of the pipe;
• whereby the mixture is pumped in at the first end and sucked out at the second end of the pipe so as to be conveyed alone the pine with the abrasive particles cleaning the inner surface of the pipe;
• determining when the inner surface of the pipe has been sufficiently cleaned by the abrasive materials;
• coating the inner surface of the cleaned pipe with a first layer of coating material;
• and
• applying a second layer of coating material to the inner surface of the pipe.

A pipe renovating method, comprising the steps of:

• drying a pipe by pumping heated air into a first end of the pipe while applying suction at a second end of the pipe;
• after the pipe has been dried, pumping a mixture of pressurized gas and particles of abrasive material into the first end of the pipe;
• simultaneously applying suction to the second end of the pipe;
• whereby the mixture is pumped in at the first end and sucked out at the second end of the pipe so as to be conveyed along the pipe with the abrasive particles cleaning the inner surface of the pipe.

A pipe renovating method, comprising the steps of:

• pumping a mixture of pressurized gas and particles of abrasive material into a first end of a pipe;
• simultaneously applying suction to a second end of the pipe;
• whereby the mixture is pumped in at the first end and sucked out at the second end of the pipe so as to be conveyed along the pipe with the abrasive particles cleaning the inner surface of the pipe;
• and
• monitoring the pressure in the pipe and relieving the pressure if the detected pressure is above a predetermined safety level.

A pipe renovating method, comprising the steps of:

• pumping a mixture of pressurized gas and particles of abrasive material into a first end of a pipe;
• simultaneously applying suction to a second end of the pipe;
• whereby the mixture is pumped in at the first end and sucked out at the second end of the pipe so as to be conveyed along the pipe with the abrasive particles cleaning the inner surface of the pipe;
• determining when the inner surface of the pipe has been sufficiently cleaned by the abrasive materials;
• testing the pipe for any leaks;
• and
• coating the inner surface of the cleaned pipe with coating material.

A pipe renovating method, comprising the steps of:

• pumping a mixture of pressurized gas and particles of abrasive material into a first end of a pipe;
• simultaneously applying suction to a second end of the pipe;
• whereby the mixture is pumped in at the first end and sucked out at the second end of the pipe so as to be conveyed alone the pipe with the abrasive particles cleaning the inner surface of the pipe;
• determining when the inner surface of the pipe has been sufficiently cleaned by the abrasive materials;
• coating the inner surface of the cleaned pipe with coating material;
• and
• determining the coating layer thickness after the pipe coating step is complete.

A system for renovating pipes, comprising:

• a supply of pressurized gas, the gas supply having an outlet;
• a first mixing machine having a first inlet connected to the outlet of the gas supply, a second inlet for supply of abrasive particles to the machine for mixing with the gas, and an outlet for the mixture of pressurized gas and abrasive particles;
• a first hose for selectively connecting the mixing machine outlet to a first end of a pipe;
• a vacuum pump;
• and
• a second hose having a first end connected to the vacuum pump and a second end for selective connection to a second end of the pipe, whereby the mixture of gas and abrasive particles is blown into the first end of the pipe and sucked out at the second end of the pipe in order to clean the pipe.