Johnson Pump
Johnson Pump Macerator Pump
Johnson Pump Macerator Pump
$176.47In StockSee Product Details
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Product Details
Johnson Pump's Macerator Pump grinds toilet waste, shredding it before it is pumped into or out from the holding tank. It utilizes a high speed rotary cutter to shred waste efficiently. The pump consists of a brass shredder, nitrile impeller, and stainless steel shaft for corrosion and chemical resistance.
Johnson pumps are designed to allow direct interchange with other macerators for easy installation. Empties a 30 gallon holding tank in about 3 minutes. Suitable for bowl or holding tank discharge.
Info & Guides
Technical Information
Additional Features & Information:
- Ignition protected motor, conforming with ISO 8846 Marine
- Mounting bracket for easy replacement
- Rotary cutter casing of PET (thermoplastic polyester)
- Directly connected to sewage line or holding tank
- Inlet: 1.1/2" threaded pipe or direct
- Discharge: Direct 1" (25.4 mm) hose connection
- Operates at either 12V or 24V 10GPM
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1 - 10 of 13 Questions
Q: null Can this pump be installed either vertically or horizontally ?
6 years ago1 Answer
A: I don't see why not, nothing showing that it has to be mounted horizontally.
6 years agoHelpful?
Q: null The product states can be connected directly to the sewage line or the holding tank; Does that mean it will screw directly into the pump out fitting on the boat? Thanks Dave J
10 years ago1 Answer
A: Looking at the photo: notice the hose receptical as it pushes on and then attaches via hose clamp. So; yes, the holding tank gets full and you can pump it out at a station or depending on your location - you can pump directly into the sea or flowing water (check the laws for your body of water). Pump works great and expect long life.
10 years agoHelpful?
Q: null With this pump, what do I need to connect up and operate with my 1996 Fleetwood RV 5__quote__? tank connector, and the discharge hose that is required (ie: garden hose?) Thanks, Jeffrey Johnston
11 years ago1 Answer
A: I assume you are wishing to pump to a waste tank facility? Or are you wanting to empty while driving? Some RVers pump onto hot 'discharge plate' while driving and spew out a little at a time (ergo the black specs on the motorcyclists face shield). I use my on a boat which is different. The pump will pump out the ground-up mess to __________; the where must be known as you must conform to local laws. Obviously you can't dump raw sewage onto the highway or ground anywhere near civilization. Sorry I am not a good source of help; but, there are some of the things to consider. This pump will pump to a waste facility just fine....... wire it w/12 or 10 gage wire and an appropriate amperage switch - I use a push and hold or a spring loaded return to center will work also - avoid a constant on switch.
11 years agoHelpful?
Q: null How far can it pump the waste?
12 years ago2 Answers
A: I pump fish / bait over ten feet until it is discharged overboard. Would believe it could pump twice that distance.
12 years agoHelpful?
Q: null the pump starts automatically when it detects waste water?
12 years ago4 Answers
A: Greg ... The pump is just that, only a pump. I bought one for a macerator application in a fishbox. The external switch on my dash turns the pump on/off. If you're using it in a waste tank, you probably have the same wiring scheme ... a switch to activate it for transfer. The only application of which I can think would have an automated on/off, would be as a bilge pump and you'd still have an external switch. Hope that helps. Andy R.
12 years agoHelpful?
Q: null Are the four through bolts brass or stainless. For all troubles i have had with Jabsco macerator is chemical damage to these bolts breaking off and allowing the macerator to twist and jam up?
12 years ago2 Answers
A: Your boat dictates: one can attach to a treated 1__quote__ plywood and make foot pads that level the pump and glue to the hull.... no bolting to the boat itself thus no damage structurally.
12 years agoHelpful?
Q: null is this 24v?
12 years ago3 Answers
A: If you have a 48 or 24 V system; you can tap into one of the 12V batteries. Sometimes a Ziner diode can protect to provide current only in one direction. Or you can use a gel battery and trickle charge.
12 years agoHelpful?
Q: null The specs refer to a brass shredder. Surely this will corrode due to contact with effluent? Does anyone have experience on longevity? Andy
12 years ago4 Answers
A: Brass when soft material is needed as a break-away. Else Navy Bronze also called brass by most. There is a difference and location is dependent on application.
12 years agoHelpful?
Q: null What is the minimum size hose one should discharge to. Is 3/4 inch 25 ft ID OK?
13 years ago2 Answers
A: There's NPSHA and NPSHR (net positive suction head..... available....... required). If the spec requires 2' for example and you physical location is 3' ---- to work around this you may need a priming system or method. Else, you will have excessive 'run-dry' times and short life if it would work.
12 years agoHelpful?
Q: null How to install it between the existing tank and discharge pump out fitting on boat?
12 years ago2 Answers
A: It is extremely straight-forward. If you are replacing an old one you should already have adequate wiring. If not; you'll need wiring ~12 ga and a switch. I use a push-and-hold type so it won't run unless you hold the button in. This way you can't forget or burn-up the pump. The suction line needs to be one that won't collapse (wire re-inforced). All else is simple. Ensure proper elevation for NPSH requirements. Will only lift so far from bottom of tank to center of pump.
12 years agoHelpful?
1 - 10 of 13 Questions