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Fixtures Trap Sizes

Recommended drain trap sizes for different types of fixtures

Recommended drain trap size for different types of fixtures:

Fixture drain - trap size

Dimensions of copper tubes ASTM B306 Drain Waste and Vent - DWV.

Nominal pipe size, outside diameter, thickness and weight.

Dimensions of Poly(Vinyl Chloride) (PVC) Sewer Pipes with belled end.

Dimensions of cast iron soil pipes.

Cleanouts provides access to the sewer for rodding.

DFU are used to calculate the drainage flow from fixtures and the required capacities of sewer service systems.

Drain pipes and vent stack sizing.

Support of Drain Waste and Vent - DWV - pipes.

Vents in draining systems protects traps against pressure differences that could cause them to siphon or blow out .

Drainage Fixture Units (DFU) connected to building drains and sewers.

Maximum Drainage Fixture Unit - DFU - loads in sanitary piping systems.

Septic systems handles waste from drain systems.

Carrying capacities of sewer and wastewater pipes - gpm and liter per second.

In sewage piping and pumping systems the fluid flow rate must be kept within certain limits to avoid operating problems.