Home water supply system: sewer pipes and fittings

Quality of plastic pipes and fittings

Plastic, polymeric sewer pipes and their constituent parts can be:

• Polypropylene( PP),
• Polyvinyl chloride( PVC).

Characteristics of the external sewerage network

External sewage communication is continued in the internal. Its designation:

1. Release of groundwater from structures to water purification structures
2. Collection and pumping of sedimentary water.

Types of external sewage:

• pressure,
• non-pressure.

Non-pressure system: characteristic of

The distinctive qualities of a non-pressure sewage system are:

1. The function of discharge and discharge of waste water is gravity flow. Used sewer pipes and fittings of PVC and PP materials. A distinctive feature is a bright orange, red color.

In the construction industry, color recognition contributes to the rapid recognition of pipes. Red, orange - external sewage system, gray - internal.

1. There are two types of pipes of external sewerage system - single-layer pipes( used at a depth of 4 meters) and double-layer pipes( used at great depths, often made of polyethylene with corrugated surface and smooth internal).
2. Competent experts in the construction industry give positive feedback to the polymer pipes of external sewerage. The union of the bell parts is made by means of rings made of rubber and the methods indicated on the image.

Pressure system: Characteristics and operation

Properties of pressure external sewage:

1. The task of the above-mentioned network is the drainage of water drains from the internal sewage system to the treatment facilities thanks to the sewage pumping station( CNS).Sewer pipes and fittings are used from polyethylene, which ensures long-term operation of the water supply system by the pressure of drains and earth load.
2. Polyethylene pipes and fittings withstand chemical attack, are not prone to rust and are of low weight. Have an orange tint( pointer suitability in the external sewer system).
3. Details of the pipeline of pressure polyethylene base in the structure have plastic fittings( welded and crimped).

Special features of the internal drainage network

The purpose of the internal sewerage system is to collect and drain the sewage into the external sewage system.

Pipes and fittings of internal water pipelines are made of polypropylene and polyvinyl chloride. Their shade is gray.

PVC is resistant to chemical attack. Capable of moving high temperature water( 50-95 degrees).

Pipes and fittings PP are resistant to higher temperatures( from 95 degrees).PP material is used for installation of non-pressure sewerage stations.

PP pipes and fittings differ:

• No ignition,
• Non-combustibility,
• Calm to chemicals.

Practice shows the excellent resistance of plastic sewage systems to chemical attack. Not surprisingly, their use in the sewage system of mass institutions( hospitals, laboratory organizations).

Cast iron materials of the internal sewerage network

Sewer pipes and fittings can contain cast iron material. Their production is based on gray cast iron with interspersed graphite. The main installation is compliance with the requirements of GOST 6942-98.Eliminate the corrosive processes is helped by a certain treatment of the coating of cast-iron pipes and fittings with bituminous solution and a means that eliminates rust, destruction of the surface and softening of the surface coating.

Pros of cast iron raw materials:

• strength,
• long-term,
• fire safety,
• repeatability.

Between themselves, cast-iron pipes are fastened with plastic pipes PVC and PP rubber adapters( adapters, see the picture).