Trap losses | Preventions

Which trap seal loss is described here:

This could be due to one of the rubber seals not being watertight, or it could be due to the plastic body of the trap being damaged

• Compression

• Leaks

• Wavering out

• Induced siphonage

Which trap seal loss is described here:

One appliance is discharged, and as the water passes another appliance, it pulls the other appliance’s trap out.

• Induced siphonage

• Capillary action

• Momentum

• Self siphonage

Which trap seal loss is described here:

Due to the lack of use of the appliance in warmer climates, the water in the trap seal is lost.

• Leaks

• Compression

• Wavering out

• Evaporation

Which trap seal loss is described here:

When the appliance discharges, a plug of water is formed. As the plug moves down the waste pipe, a negative pressure is created pulling the trap out.

• Induced siphonage

• Capillary action

• Self siphonage

• Momentum

Which trap seal loss is described here:

When wind passing over the top of a soil stack and therefore creating the traps in the appliances to bob up and down.

• Wavering out

• Momentum

• Capillary action

• Self siphonage

Which trap seal loss is described here:

When long fibres or hairs get caught over the top of the weir, drawing the trap seal water over the weir.

• Induced siphonage

• Leaks

• Capillary action

• Momentum

Which trap seal loss is described here:

When a large amount of water is suddenly discharged down a trap. The force of water movement carries the trap seal out.

• Capillary action

• Momentum

• Compression

• Wavering out

Which trap seal loss is described here:

When the stack has a tight radius at the base, the water backs up the stack and pushing out the lower traps.

• Capillary action

• Momentum

• Compression

• Induced siphonage

What is the method used to prevent trap seal loss: Evaporation

• Regular use of the appliances

• The use of a long radius bend

• The discharge branches being a minimum of 50mm diameter

• The installation of a vent cowl

What is the method used to prevent trap seal loss: Induced siphonage

• The installation of a vent cowl

• Regular use of the appliances

• The discharge branches being a minimum of 50mm diameter

• Installing an anti-vac trap