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Pentair GRO-2550

Reverse osmosis system

GRO-2550 50 GPD 4-Stage RO Replacement Filters

Pentair's Pentek four-stage reverse osmosis system uses standard, interchangeable filters. The polypropylene spun sediment pre-filter combined with the 10 micron carbon block filter help to reduce particles, chlorine taste, odor, and help extend the life of the 50 gallon per day (GPD) GRO Membrane. Find these compatible parts below along with maintenance items.

See the replacement schedule

Compatible parts

Everything that fits the Pentair GRO-2550

Ready Water RW-SED2510050 5-micron sediment filter, direct replacement for 93023 and PX05-9 7/8
Top Seller
Ready Water
Ready Water RW-SED2510050 Sediment Filter 5 Micron 2.5" x 10"
(89)
$8.99
Meets FDA requirements for food and beverage contact
Omnipure OMB934-10m 10-micron carbon block filter, 2.5 x 10 inch
Omnipure
Omnipure OMB934-10m Carbon Block Filter, 2.5 x 10 Inch
(32)
$13.99
Reduces chlorine, taste and odor
NSF 42 Certified
Pentair 4004424 GRO-50EN high-efficiency reverse osmosis membrane, 50 GPD, with integrated flow control
Free Shipping
Pentair
Pentair GRO-50EN 1:1 RO Membrane 50 GPD With Flow Control 4004424
(7)
$149.00
Thin Layer Composite (TLC)
Permeate Check Valve
Drainline Flow Control
Encapsulated Membrane Style
Pentair GRO-50EN 4002574 high-efficiency 50 GPD reverse osmosis membrane without flow control
Pentair
Pentair GRO-50EN 1:1 RO Membrane 50 GPD 4002574 - No Flow Control
(3)
$119.00
Thin Layer Composite (TLC)
Permeate Check Valve
Encapsulated Membrane Style
Omnipure CL10ROT33-BB 5-micron inline GAC carbon filter with 1/4-inch female threads
Omnipure
Omnipure CL10ROT33 Inline Carbon Filter GAC 5 Mic 2" x 10"
(62)
$12.99
Reduces chlorine, taste and odor
NSF 42 Certified
Select an option

Replacement filter info

Your replacement schedule

Each stage of the Pentair GRO-2550, the exact part that fits it, and when to change it.

  1. Stage 1: Sediment filter

    Part RW-SED2510050, Ready Water RW-SED2510050 Sediment Filter 5 Micron 2.5" x 10" $8.99

    Every 6–12 months

  2. Stage 2: Carbon block filter

    Part OMB934-10m, Omnipure OMB934-10m Carbon Block Filter, 2.5 x 10 Inch $13.99

    Every 6–12 months

  3. Stage 3: RO membrane

    Part 4004424, Pentair GRO-50EN 1:1 RO Membrane 50 GPD With Flow Control 4004424 $149.00

    Every 2 years

  4. Alternative for stage 3: RO membrane

    Part 4002574, Pentair GRO-50EN 1:1 RO Membrane 50 GPD 4002574 - No Flow Control $119.00

    Every 2 years

  5. Stage 4: Post carbon filter

    Part CL10ROT33-BB, Omnipure CL10ROT33 Inline Carbon Filter GAC 5 Mic 2" x 10" $12.99

    Every 6–12 months

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