ASME A112.3.4:2013 pdf download.Plumbing fixtures with pumped waste and macerating toilet systems.
4.2.4 Function
The unit shall dispose of the contents of the water closet upon activation of the flushing mechanism. The macerating pump shall be capable of discharging the ground-up waste a distance of 3.7 m (12 It) in vertical height as covered in Clause 5.2.
4.2.5 Hydrostatic pressure integrity
The check valve in the holding tank shall be capable of resisting a hydrostatic pressure test as defined in
Clause 5.3.
4.2.6 Minimum size
The minimum size of the pressure portion of the piping shall be 19 mm (0.75 in) inside diameter.
4.2.7 Venting
The sump shall be vented according to the manufacturer’s instructions with a minimum vent size of not
less than 32 mm (115 in) inside diameter.
Note: This is not considered ro be a sewge sun
4.3 Pumped waste components
4.3.1 Pump
The pump for pumped waste systems shall comply with either UL 778 or CSA C22.2 No. 108 and meet the performance requirements for permanently installed pumps.
4.3.1.1 Pump activation and function
The pump shall automatically activate to discharge the contents of the fixture when the fixture is used.
The pump system shall prevent waste from rising in the fixture. The pump shall be capaWe of discharging
the waste to a vertical height of 3.7 m (12 It) as covered in Clause 5.2.
4.3.2 Discharge pipe
The discharge pipe from the pump of a pumped waste system shall be a minimum size of 19 mm (0.75 in) nominal.
4.3.3 Ilackflow prevention
A check valve shall be provided with the pumped waste system to prevent the retum of discharged waste to the plumbing fixture. rhe check valve shall be capable of resisting a 3.7 m (12 It) column of water head pressure when tested in accordance with Clause 5,3.
The unit shall dispose of the contents of the water closet upon activation of the flushing mechanism. The macerating pump shall be capable of discharging the ground-up waste a distance of 3.7 m (12 It) in vertical height as covered in Clause 5.2.
4.2.5 Hydrostatic pressure integrity
The check valve in the holding tank shall be capable of resisting a hydrostatic pressure test as defined in
Clause 5.3.
4.2.6 Minimum size
The minimum size of the pressure portion of the piping shall be 19 mm (0.75 in) inside diameter.
4.2.7 Venting
The sump shall be vented according to the manufacturer’s instructions with a minimum vent size of not
less than 32 mm (115 in) inside diameter.
Note: This is not considered ro be a sewge sun
4.3 Pumped waste components
4.3.1 Pump
The pump for pumped waste systems shall comply with either UL 778 or CSA C22.2 No. 108 and meet the performance requirements for permanently installed pumps.
4.3.1.1 Pump activation and function
The pump shall automatically activate to discharge the contents of the fixture when the fixture is used.
The pump system shall prevent waste from rising in the fixture. The pump shall be capaWe of discharging
the waste to a vertical height of 3.7 m (12 It) as covered in Clause 5.2.
4.3.2 Discharge pipe
The discharge pipe from the pump of a pumped waste system shall be a minimum size of 19 mm (0.75 in) nominal.
4.3.3 Ilackflow prevention
A check valve shall be provided with the pumped waste system to prevent the retum of discharged waste to the plumbing fixture. rhe check valve shall be capable of resisting a 3.7 m (12 It) column of water head pressure when tested in accordance with Clause 5,3.
