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Watts-FPP-975-DOE Flowmax HP DOE Pleated Filter Micron 10 in

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Watts-FPP-975-DOE Flowmax HP DOE Pleated Filter Micron 10 in

The Watts FPP-975-DOE Flowmax HP is a 10-micron pleated sediment filter engineered for high-purity applications where flow rate and dirt-holding capacity matter. With 100% polypropylene construction and FDA-compliant materials, this 9.75" × 2.5" cartridge handles everything from whole-house pre-filtration to reverse osmosis feed water protection.
SPECIFICATIONS

Watts Flowmax HP Technical Details

Model Number Watts FPP-975-DOE
Dimensions 9.75" × 2.5" (with DOE end caps)
Filtration Rating 10 micron nominal
Media Type 100% polypropylene pleated synthetic
Temperature Range 40°F to 175°F (4.4°C to 79.4°C)
Max Pressure Differential 130 psid collapse / 35 psid recommended change-out
Compliance FDA 21 CFR 174.5, 177.1520, 177.1630
Housing Compatibility Watts Flowmax filter housings (DOE style)
INSTALLATION & USE

How to Install the Flowmax HP Filter

  1. Shut off water supply and relieve system pressure by opening a downstream faucet or depressurization valve on the housing.
  2. Unscrew the Flowmax filter housing sump and remove the old cartridge. Inspect the o-ring and housing for debris or damage.
  3. Insert the Watts FPP-975-DOE filter into the housing with the DOE end caps seated properly. Ensure correct orientation per housing manual.
  4. Reinstall the housing sump, hand-tighten firmly, then restore water pressure slowly and check for leaks at all connections.
  5. Flush the new filter for 3–5 minutes before resuming normal use. Replace when pressure differential reaches 35 psid or flow diminishes noticeably.
COMPATIBILITY

Where This Filter Fits

The Watts FPP-975-DOE is designed for Watts Flowmax filter housings that accept 9.75" cartridges with double-open-end (DOE) caps. It works as sediment pre-filtration for reverse osmosis systems, whole-house applications, or any high-purity filtration scenario where you need better dirt capacity than spun or melt-blown cartridges. The 10-micron rating targets fine sediment, silt, rust, and particulate while maintaining high flow rates and low pressure drop across the pleated media.

🔧 Pro Tip: Mark your installation date on the filter housing with a permanent marker or label. The pleated construction extends service life significantly, but tracking pressure drop with a gauge tells you exactly when to change the cartridge instead of guessing by calendar intervals.
The Watts FPP-975-DOE Flowmax HP is a 10-micron pleated sediment filter engineered for high-purity applications where flow rate and dirt-holding capacity matter. With 100% polypropylene construction and FDA-compliant materials, this 9.75" × 2.5" cartridge handles everything from whole-house pre-filtration to reverse osmosis feed water protection.
SPECIFICATIONS

Watts Flowmax HP Technical Details

Model Number Watts FPP-975-DOE
Dimensions 9.75" × 2.5" (with DOE end caps)
Filtration Rating 10 micron nominal
Media Type 100% polypropylene pleated synthetic
Temperature Range 40°F to 175°F (4.4°C to 79.4°C)
Max Pressure Differential 130 psid collapse / 35 psid recommended change-out
Compliance FDA 21 CFR 174.5, 177.1520, 177.1630
Housing Compatibility Watts Flowmax filter housings (DOE style)
INSTALLATION & USE

How to Install the Flowmax HP Filter

  1. Shut off water supply and relieve system pressure by opening a downstream faucet or depressurization valve on the housing.
  2. Unscrew the Flowmax filter housing sump and remove the old cartridge. Inspect the o-ring and housing for debris or damage.
  3. Insert the Watts FPP-975-DOE filter into the housing with the DOE end caps seated properly. Ensure correct orientation per housing manual.
  4. Reinstall the housing sump, hand-tighten firmly, then restore water pressure slowly and check for leaks at all connections.
  5. Flush the new filter for 3–5 minutes before resuming normal use. Replace when pressure differential reaches 35 psid or flow diminishes noticeably.
COMPATIBILITY

Where This Filter Fits

The Watts FPP-975-DOE is designed for Watts Flowmax filter housings that accept 9.75" cartridges with double-open-end (DOE) caps. It works as sediment pre-filtration for reverse osmosis systems, whole-house applications, or any high-purity filtration scenario where you need better dirt capacity than spun or melt-blown cartridges. The 10-micron rating targets fine sediment, silt, rust, and particulate while maintaining high flow rates and low pressure drop across the pleated media.

🔧 Pro Tip: Mark your installation date on the filter housing with a permanent marker or label. The pleated construction extends service life significantly, but tracking pressure drop with a gauge tells you exactly when to change the cartridge instead of guessing by calendar intervals.
Select Size
From $33.96

Original: $97.02

-65%
Watts-FPP-975-DOE Flowmax HP DOE Pleated Filter Micron 10 in—

$97.02

$33.96

Description

The Watts FPP-975-DOE Flowmax HP is a 10-micron pleated sediment filter engineered for high-purity applications where flow rate and dirt-holding capacity matter. With 100% polypropylene construction and FDA-compliant materials, this 9.75" × 2.5" cartridge handles everything from whole-house pre-filtration to reverse osmosis feed water protection.
SPECIFICATIONS

Watts Flowmax HP Technical Details

Model Number Watts FPP-975-DOE
Dimensions 9.75" × 2.5" (with DOE end caps)
Filtration Rating 10 micron nominal
Media Type 100% polypropylene pleated synthetic
Temperature Range 40°F to 175°F (4.4°C to 79.4°C)
Max Pressure Differential 130 psid collapse / 35 psid recommended change-out
Compliance FDA 21 CFR 174.5, 177.1520, 177.1630
Housing Compatibility Watts Flowmax filter housings (DOE style)
INSTALLATION & USE

How to Install the Flowmax HP Filter

  1. Shut off water supply and relieve system pressure by opening a downstream faucet or depressurization valve on the housing.
  2. Unscrew the Flowmax filter housing sump and remove the old cartridge. Inspect the o-ring and housing for debris or damage.
  3. Insert the Watts FPP-975-DOE filter into the housing with the DOE end caps seated properly. Ensure correct orientation per housing manual.
  4. Reinstall the housing sump, hand-tighten firmly, then restore water pressure slowly and check for leaks at all connections.
  5. Flush the new filter for 3–5 minutes before resuming normal use. Replace when pressure differential reaches 35 psid or flow diminishes noticeably.
COMPATIBILITY

Where This Filter Fits

The Watts FPP-975-DOE is designed for Watts Flowmax filter housings that accept 9.75" cartridges with double-open-end (DOE) caps. It works as sediment pre-filtration for reverse osmosis systems, whole-house applications, or any high-purity filtration scenario where you need better dirt capacity than spun or melt-blown cartridges. The 10-micron rating targets fine sediment, silt, rust, and particulate while maintaining high flow rates and low pressure drop across the pleated media.

🔧 Pro Tip: Mark your installation date on the filter housing with a permanent marker or label. The pleated construction extends service life significantly, but tracking pressure drop with a gauge tells you exactly when to change the cartridge instead of guessing by calendar intervals.
Watts-FPP-975-DOE Flowmax HP DOE Pleated Filter Micron 10 in | Isopure Water