L Series

ART Small Commercial Reverse Osmosis Systems

300 to 19,000 Gallons/Day
For feed water TDS 500 to 1000 PPM

Designed to produce low dissolved solids water from tap or well water, these Small Commercial RO systems use high efficiency reverse osmosis membranes. Part of the L-series family (other systems include XL and HL series), these RO systems are designed to work at pressures of 200-250 psi for higher TDS water and use TW reverse osmosis membranes. The TW RO membranes offer higher salt removal and the higher operating pressure overcomes the loss of membrane flow due to higher TDS level.

ART L Series reverse osmosis systems use the proven, reliable components and are mounted on a sturdy powder-coated metal frame. There are numerous design details learned from years of experience that are incorporated in our water filtration systems. Our process and fluid design ensures an optimum membrane life and minimizes the membrane fouling.

L Series Commercial Reverse Osmosis Systems Ordering Information

RO System Model No.	RO System Capacity		RO Membrane Elements		Line Sizes (NPT, Inches)			RO System Dimensions (in/cm)			Approx. Shipping Weight (Lb/Kg)
RO System Model No.	GPD	m³/day	Qty.	Size (Dia.×L)	Inlet	Perm.	Conc.	Length	Depth	Height	Approx. Shipping Weight (Lb/Kg)
L-12521A	300	1	1	2.5” × 21”	¾”	⅜”	⅜”	20/51	24/61	55/140	230/104
L-125A	600	2	1	2.5” × 40”	¾”	⅜”	⅜”	20/51	24/61	55/140	240/109
L-225A	1,200	5	2	2.5” × 40”	¾”	⅜”	⅜”	20/51	24/61	55/140	250/113
L-14A	1,800	7	1	4” × 40”	¾”	½”	½”	20/51	24/61	55/140	275/125
L-24A	3,000	12	2	4” × 40”	¾”	½”	½”	20/51	24/61	55/140	300/136
L-34A	5,500	21	3	4” × 40”	¾”	½”	½”	20/51	32/82	55/140	325/147
L-44A	7,000	27	4	4” × 40”	¾”	½”	½”	20/51	32/82	55/140	350/159
L-54A	8,500	32	5	4” × 40”	¾”	½”	½”	20/51	32/82	55/140	375/170
L-64A	10,000	38	6	4” × 40”	¾”	½”	½”	20/51	32/82	55/140	400/181
L-74A	11,500	44	7	4” × 40”	¾”	½”	½”	20/51	40/102	55/140	441/200
L-84A	13,000	49	8	4” × 40”	¾”	½”	½”	20/51	40/102	55/140	466/211
L-94A	14,400	55	9	4” × 40”	¾”	½”	½”	20/51	40/102	55/140	491/223
L-104A	16,000	60	10	4” × 40”	¾”	½”	½”	20/51	46/117	55/140	516/234
L-114A	17,300	66	11	4” × 40”	¾”	½”	½”	20/51	46/117	55/140	541/245
L-124A	19,000	72	12	4” × 40”	¾”	½”	½”	20/51	46/117	55/140	566/257

Notes and Voltage/ Ordering Information

Recommended Pre-Treatment Equipment: All pretreatment equipment and SDI test kits are available from All Refine.
- Carbon Filter: Chlorine must be removed with a carbon filter prior to the RO system, if present in the feed water.
- Water Softener: Hardness must be removed if present in feed water prior to RO to avoid scaling the membranes.
- Multimedia filter: If feed water exceeds <1 NTU turbidity, or silt density index (SDI) of 3, media filter pretreatment recommended.
Capacity Basis: 24 hrs/day
Systems rated at: 77°F (25°C) using 1000 ppm sodium chloride solution operating at approx. 200 psi (14 kg/cm²) pressure. For feed water with higher TDS refer to our Series HL brochure.
Minimum feed pressure to RO System: 40-60 PSI. System capacity changes significantly with water temperature
All dimensions and weights are approximate.
Voltage: Please add our voltage codes to the end of the model number when ordering. Example: L-12521-116 = 110v, 1 ph, 60 hz.

Available Voltages:

Voltage Code	Voltage	L-12521A	L-125A	L-225A	L-14A	L-24A	L-34A	L-44A	L-54A
116	120V/1Ph/60Hz	✓	✓	✓	✓	✓	—	—	—
216	220-240V/1Ph/60Hz	✓	✓	✓	✓	✓	✓	✓	✓
215	220-240V/1Ph/50Hz	✓	✓	✓	✓	✓	✓	✓	✓
236	240V/3Ph/60Hz	—	—	—	—	—	✓	✓	✓
235	240V/3Ph/50Hz	—	—	—	—	—	✓	✓	✓
436	460V/3Ph/60Hz	—	—	—	—	—	✓	✓	✓

Voltage Code		L-64A	L-74A	L-84A	L-94A	L-104A	L-114A	L-124A
116	120V/1Ph/60Hz	—	—	—	—	—	—	—
216	220-240V/1Ph/60Hz	✓	✓	✓	✓	✓	✓	✓
215	220-240V/1Ph/50Hz	✓	✓	✓	✓	✓	✓	✓
236	240V/3Ph/60Hz	✓	✓	✓	✓	✓	✓	✓
235	240V/3Ph/50Hz	✓	✓	✓	✓	✓	✓	✓
436	460V/3Ph/60Hz	✓	✓	✓	✓	✓	✓	✓