Table of Contents

Pipe Appurtenances Valve and Joint in Water supply Piping

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Pipe Appurtenances - Valve 

Check Valve: 

  • These valves are used to check the flow of water in reverse direction. 
  • These are generally provided on the delivery side of the pump. These valves work automatically.

Pressure reducing valve:  

  • In hydraulics, a pressure reducing valve serves the same purpose as a "pressure regulator" valve in a compressed air system. 
  • It is one of a variety of pressure control valves available for hydraulic circuits. It is always used in a branch circuit and never in the full pump flow line.

Air Relief Valve: 

  • it is a type of safety valve used to control or limit the pressure in a system, pressure might otherwise build up and create a process upset, instrument or equipment failure, or fire. 
  • The pressure is relieved by allowing the pressurised fluid to flow from an auxiliary passage out of the system.

Air Valve: 

  • Provided at summits to release air pressure.

Relief Valve or Safety valve or cut-off Valve:

  • Helps in regulating the water hammer pressure.

Scour valve: 

  • This valve is used to drain the water out of the pipe system.

Sluice valve: 

  • These valves are used to regulate the flow of water in the pipe system by dividing into number of sections.

Foot Valve: 

  • Prevent entry of debris into the pumping system and prevent back flow.

Butterfly valve:

  • Regulate and Stop the flow specially in large size conduits.

Globe Valve: 

  • Direction of Flow changes by 90° twice

Surge arrestor: 

  • Control of water hammer in pipe lines by absorbing surge energy.

Joint in Water Supply Piping:

Flexible joint: 

  • Where Settlement of pipe line can occur.

Threaded joint:

  • Recommended for connecting the GI pipes.

Simplex joint: 

  • For joining asbestos cement pipes.

Flanged joint: 

  • Recommended for temporary work where the pipe line is to be dismantled after work or to be shifted.

Expansion joint: 

  • Provided at suitable intervals to take into account the change in pipe length due to temperature variations.

Collar joint: 

  • Recommended for joining R.C.C pipes and asbestos cement pipes.

Spigot and socket joint: 

  • Also known as Bell-spigot joint. Where spigot end is inserted into the bell end.

Joint in water supply Piping.jpg
Joint in water supply Piping.jpg








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