Watts R48-20-3131100 - Manual (Page 5)

I. INTRODUCTION
The separation of dissolved solids and water using RO membranes is a pressure driven
temperature dependent process. The membrane material is designed to be as permeable to water
as possible while maintaining the ability to reject dissolved solids.
The main system design parameters require the following:
Internal flows across the membrane surface must be high enough to prevent settling of fine
suspended solids on the membrane surface.
The concentration of each dissolved ionic species must not exceed the limits of solubility
anywhere in the system.
Pre-treatment must be sufficient to eliminate chemicals that would attack the membrane
materials.
A. SPECIFICATIONS
R48-08 R48-12 R48-16 R48-20
Maximum Productivity (gallons per minute) 40 60 80 100
Quality (typical membrane percent rejection) 98%
Recovery (adjustable) 65% - 75%
Membrane Size 8” x 40”
Membrane Array (four elements per vessel) 1:1 2:1 2:2 3:2
Prefilter (system ships with five micron cartridges) 7 round x 30” 7 round x 40”
Feed Water Connection 2” Flange 2.5” Flange 3” Flange
Product Water Connection 2” Flange 2.5” Flange
Reject Water Connection 1.5” Flange
Feed Water Required (GPM at 65% recovery) 62 93 123 154
Minimum Feed Water Pressure 20 PSIG 20 PSIG 20 PSIG 20 PSIG
Drain Required (maximum) 62 93 123 154
460 VAC, 3-phase, 60Hz (other voltages available) 25 amps 30 amps 35 amps 40 amps
Motor Horse Power (TEFC Motor) 15 20 25 30
Dimensions L x W x H (approximate) 196” x 41” x 72”
Shipping Weight (estimated pounds)
2500 2800 3200 3500
Notes:
Maximum production based on a feed water of 77° F, SDI < 3, 1000 ppm TDS, and pH 7.6.
Individual membrane productivity may vary (± 15%). May be operated on other feed waters with reduced capacity.
Percent Rejection is based on membrane manufactures specifications; overall system percent rejection may be less.