Why install booster pump before 4th stage membrane:

Install the booster pump before stage1 is easier but the solenoid valve and pump may get dirty water and debris from water supply hence shorten the life of the solenoid valve and pump. Also the bottom 3 filters will not see high pressure to prevent bursting of filter housing. The pressure switch can be installed anywhere after the RO membrane on the pure water side. Either way works.

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1 x	bulk818, DI resin refill bags Di-Ionization media
1 x	bulk201, Sediment Filter
1 x	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x	326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
1 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x	bulkic21, Koolermax Inline Carbon Filter
1 x	bulk205, Carbon Block Filter
1 x	UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
1 x	288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x	FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x	759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x	UU Clips Pair Membrane to Membrane, 2.5" to 2.5"
1 x	CBV-38, Tank Ball Valve to 3/8 tubing
1 x	752, DC Booster Pump w/ Transformer
1 x	WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x	1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	MKP, Maintenance kit for K5150P K6150P AR150P
1 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x	SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO

View Cart	$1,922.40

1 x	bulk818, DI resin refill bags Di-Ionization media
1 x	bulk201, Sediment Filter
1 x	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x	326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
1 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x	bulkic21, Koolermax Inline Carbon Filter
1 x	bulk205, Carbon Block Filter
1 x	UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
1 x	288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x	FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x	759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x	UU Clips Pair Membrane to Membrane, 2.5" to 2.5"
1 x	CBV-38, Tank Ball Valve to 3/8 tubing
1 x	752, DC Booster Pump w/ Transformer
1 x	WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x	1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	MKP, Maintenance kit for K5150P K6150P AR150P
1 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x	SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO

View Cart	$1,922.40