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Seawater Reverse Osmosis Calculator (R.O.) Guide & Calculator

How do you size seawater (salt water) reverse osmosis systems? Sizing and designing an industrial seawater reverse osmosis system (SWRO) is a complicated process. Many variables exist that are beyond the scope of the industrial seawater reverse osmosis guide & calculator below. RO feed water chemistry, pressure, temperature and process feed flow rate are all variables that have effects on seawater reverse osmosis system sizing, which are not considered here. These calculations are for quick estimates for general sizing, design, and footprints of SWRO water systems. Other calculators for specialized industrial, ultrapure reverse osmosis systems can be found here:

Seawater Reverse Osmosis (SWRO) Systems are flexible for customization. Standard output capacities range from 5,000-300,000 GPD (3.5 GPM – 200 GPM). For detailed SWRO sizing configurations (e.g. single, twin, triple or special multiple skid configurations), control types (Allen Bradley, GE, Siemens PLC, progressive flow, additive flow) or specific specifications like (316L, 304, 316) stainless steel or specific valve & instrument types, email or call Nancrede Engineering at 888-56-WATER (569-2837). Our sales engineering team consists of degreed mechanical engineers, experts in water treatment and processes for seawater reverse osmosis systems including pre-treatment equipment like carbon filters, ultraviolet (UV) lights, pumps, bacterial sub-micron filters, ultrapure water storage tanks. We’ll find the perfect reverse osmosis system for all your most critical high purity water needs. We also offer leasing and financing options.

Nancrede Engineering also offers preventative maintenance, engineering consultation, equipment leasing, financing, and build, own, operate options. Let us know if you would like information on how these services can help you reduce downtime and capital risks.

Reverse osmosis desired gallons/day (gpd):
Reverse osmosis water forwarding pump size (gpm): 888-569-2837