Submariner1
Member
- Messages
- 194
- Location
- Berkshire
My new Nuair 12 Cfm belt drive compressor has a basic plastic filter on the B2800B pump.
I would like to convert it to accept a Solberg FS-10-75 3/4” M BSP (43m3/ hour) = 25.3 cfm Silencer-Filter.
I like the idea of better filtration and like the silencer aspect to reduce the noise.
I assume the Solberg at 2 parts per million is a better filter, than the cheap basic plastic foam insert Std. Filter?
My problem is that the inlet port on the pump head has a 20mm x 40mm hole. That = 800 sq. mm surface area.
But The Solberg has a 3/4” BSP male. 3/4” bsp is 26.44 mm diam. Therefore the hole on the filter is only 549.1 sq mm
My concern is that the “Constriction” on the proposed connection could starve the pump of air and overheat?
Note on the positive side of my logic; the cubic displacement of the machine is Only 12 cfm (FAD 7.9) and the max flow of the Solberg filter has a rated flow of 25.3 cfm .... so I assume it will not constrict the air input?
The worrying side of my idea is that my proposed physical connection will only be 549 sq mm and the original standard hole on the cylinder head is 800 sq mm.
Kind of conflicts? physical connection is smaller, but the potential flow is greater. With Zero knowledge of Flow Mechanics Physics I am stumbling in the dark here.
Am I right that because the filter’s airflow is greater than The cubic displacement i.e. circa double, then the fact the connection is smaller will not matter?
Note: I propose to get a flat bar of stainless A2, 80mm L x 60mm W x 8mm thick, and drill and tap a 3/4” BSP (= 26mm diam.) threaded hole in this. Plus add two 6mm holes either side for the original securing allen bolts. And probably make a cardboard or mastic gasket.
So I effectively have a plate with a 26mm hole blanking off the 20mm x 40mm Inlet port. Yes I effectively waste 3mm top and bottom, but could file off at 45 degrees in this area. At least the airflow is going from a 549sq. mm hole to a 800 Sq. mm hole. So I am not “constricting down the flow” so to speak.
I am also not sure how I could test I was not damaging the new pump.
Other than timing how long it takes to fill the 50L air receiver. And temperature testing various parts of the pump before and after the mod. Sadly I don’t have a temp gun, just a thermometer with a lead for localised temp measurement.
any help much appreciated
I would like to convert it to accept a Solberg FS-10-75 3/4” M BSP (43m3/ hour) = 25.3 cfm Silencer-Filter.
I like the idea of better filtration and like the silencer aspect to reduce the noise.
I assume the Solberg at 2 parts per million is a better filter, than the cheap basic plastic foam insert Std. Filter?
My problem is that the inlet port on the pump head has a 20mm x 40mm hole. That = 800 sq. mm surface area.
But The Solberg has a 3/4” BSP male. 3/4” bsp is 26.44 mm diam. Therefore the hole on the filter is only 549.1 sq mm
My concern is that the “Constriction” on the proposed connection could starve the pump of air and overheat?
Note on the positive side of my logic; the cubic displacement of the machine is Only 12 cfm (FAD 7.9) and the max flow of the Solberg filter has a rated flow of 25.3 cfm .... so I assume it will not constrict the air input?
The worrying side of my idea is that my proposed physical connection will only be 549 sq mm and the original standard hole on the cylinder head is 800 sq mm.
Kind of conflicts? physical connection is smaller, but the potential flow is greater. With Zero knowledge of Flow Mechanics Physics I am stumbling in the dark here.
Am I right that because the filter’s airflow is greater than The cubic displacement i.e. circa double, then the fact the connection is smaller will not matter?
Note: I propose to get a flat bar of stainless A2, 80mm L x 60mm W x 8mm thick, and drill and tap a 3/4” BSP (= 26mm diam.) threaded hole in this. Plus add two 6mm holes either side for the original securing allen bolts. And probably make a cardboard or mastic gasket.
So I effectively have a plate with a 26mm hole blanking off the 20mm x 40mm Inlet port. Yes I effectively waste 3mm top and bottom, but could file off at 45 degrees in this area. At least the airflow is going from a 549sq. mm hole to a 800 Sq. mm hole. So I am not “constricting down the flow” so to speak.
I am also not sure how I could test I was not damaging the new pump.
Other than timing how long it takes to fill the 50L air receiver. And temperature testing various parts of the pump before and after the mod. Sadly I don’t have a temp gun, just a thermometer with a lead for localised temp measurement.
any help much appreciated
