Sterling Water Treatment ROTFC-50 and ROCP-B RO System Maintenance Bundle

Perform a complete, hassle-free refresh on your drinking water system with the Sterling Water Treatment Complete Reverse Osmosis Maintenance Bundle (SKU: STWROCPB/STWROTFC50). This all-in-one system kit combines the annual ROCP-B Pre/Post-Filter Refresh Pack with the RO-TFC50 50 GPD Reverse Osmosis Membrane, providing everything required to restore total dissolved solids (TDS) reduction, eliminate foul tastes and odors, and revive proper flow rates across your entire system.

Engineered as the official OEM replacement set for Sterling DWSB-TFC-50 and DWSB-50-PUMP (DWSB-50-PermPump) under-sink reverse osmosis systems, this bundle ensures complete component compatibility for routine maintenance and long-term performance.

What’s Included in the Complete Maintenance Bundle

1. Sterling ROCP-B Annual Pre/Post Filter Pack (STWROCPB)

Refreshes the staged pre- and post-filtration elements that protect your main membrane and polish drinking water. Typically replaced every 12 months.

• (1) PB1005: Poly-Bonded Sediment Filter Cartridge (2.5" x 10", 5 Micron) – Captures sand, silt, rust, and suspended particulates before water reaches the carbon stages.
• (1) GAC10: Granular Activated Carbon Filter Cartridge (2.5" x 10") – Premium coconut shell carbon media engineered for maximum chlorine, VOC, and odor reduction.
• (1) CB1005: Carbon Block Filter Cartridge (2.5" x 10", 5 Micron) – Fine radial-flow carbon block for secondary chemical reduction and particulate trapping.
• (1) IC10 Series: Inline Carbon Post-Filter (IC10Q/IC10T) – Final inline polishing filter that removes lingering tastes right before water reaches your faucet or ice maker.

2. Sterling RO-TFC50 Universal 50 GPD RO Membrane (STWROTFC50)

The core filtration stage of your reverse osmosis setup. Replaced every 24 months under standard municipal water conditions.

• High TDS Reduction: Reduces heavy metals, dissolved salts, minerals, and scale-forming impurities.
• 50 Gallons Per Day Capacity: Supports continuous daily household demands for drinking, cooking, and refrigerator supply lines.
• Standard 1812 Format: Spiral-wound thin-film composite (TFC) element measures approx. 11.75" L x 1.8" Dia. to drop directly into standard residential membrane housing sumps.

Key Features & Benefits

All-In-One Complete Maintenance

Bundling your annual pre/post-filters with the 2-year RO membrane eliminates guesswork, saves on shipping, and ensures your system undergoes a complete sanitary refresh during major maintenance intervals.

Membrane Protection & Extended Equipment Life

Replacing pre-filters alongside or prior to a new membrane install prevents harsh chlorine degradation and grit accumulation from prematurely fouling your new RO-TFC50 element.

Direct OEM Replacement Fit

Factory-specified by Sterling Water Treatment to drop right into standard 10" filter sumps and 1812 membrane housings without adapters or modifications.

Individual Replacement Parts & Options

Need to order individual replacement components or accessories separately for future service?

• Annual Pre/Post Filter Set: Sterling ROCP-B Filter Replacement Bundle
• 50 GPD Membrane Only: Sterling RO-TFC50 Universal 50 GPD RO Membrane
• Granular Carbon Pre-Filter: Sterling GAC10 Filter Cartridge
• Inline Post-Filter (Quick-Connect): Sterling IC10Q 10" Inline Filter

Product Details

Explore more from this brand: Sterling Water Treatment Products

• Brand: Sterling Water Treatment
• Collection: CP Series / DWSB Series
• SKU: STWROCPB/STWROTFC50
• MPNs Included: ROCP-B & RO-TFC50
• UPCs Included: 0813310020275 & 0813310020299
• System Compatibility: Sterling DWSB-TFC-50, DWSB-50-PUMP, and DWSB-50-PermPump RO Systems
• Primary Drop-In Sizes: Standard 10" L x 2.5" Dia. Pre-Filters | 1812 Format Membrane (11.75" x 1.8")
• Service Recommendation: Replace pre/post filters every 12 months; replace membrane element every 24 months.

Sterling Maintenance Bundle FAQ

How often should I purchase this complete bundle versus the ROCP-B pack alone?

Under typical water conditions, pre- and post-filters (ROCP-B) should be replaced every 12 months. The main RO membrane (RO-TFC50) lasts approximately 24 months. Purchasing this full bundle every two years provides a complete system reset, while ordering the standalone ROCP-B pack on alternate years keeps pre-filtration current.

Does this bundle include the outer plastic filter housings or manifold?

No. This maintenance kit includes all the internal replacement filter cartridges and the membrane element itself. You re-use your existing under-sink filter sumps and membrane housing.

Will this work with other 5-stage reverse osmosis systems?

Yes. While specifically styled for Sterling DWSB-TFC-50 systems, standard 10" x 2.5" drop-in cartridges and 1812 membrane elements fit most standard residential under-sink RO manifolds on the market.

Weight	6.0 lb
Height	7.50 in.
Horse Power	1/3
Length	7.50 in.
Room	Kitchen
Type	Replacement Cartridges
Width	7.50 in.
Inventory Number	STWROCPB/STWROTFC50
MPN	ROCP-B/RO-TFC50