Pentair TLC-75 Reverse Osmosis Membrane – 75 GPD

Description

The Pentair 75 GPD TLC RO Membrane delivers reliable purification performance for standard residential and light commercial reverse osmosis systems. Finished with state-of-the-art TLC (Thin Layer Composite) membrane technology, this element reduces dissolved solids and other contaminants from your water, producing cleaner, better-tasting drinking water at a rated capacity of up to 75 gallons per day (GPD).

This membrane is ideal as a replacement element when your existing RO membrane has declined in performance or throughput. Its standard 1.79″ × 11.75″ size fits most common residential RO membrane housings.

Key Features

• Rated 75 GPD Performance — Designed to produce approximately 75 gallons of purified water per day under typical residential conditions.
• TLC Thin Layer Composite Membrane — Advanced thin-film construction offers high rejection efficiency across a range of contaminants.
• High Rejection Stability — Maintains rejection performance even at higher input TDS (total dissolved solids).
• Standard Residential Size — 1.79″ diameter × 11.75″ length fits most 1812 style RO membrane housings.
• Wide Operating Range — Suitable for a broad range of feed pressures (up to ~100 psi) and temperatures (up to ~120 °F).
• Dry Membrane Format — Shipped dry for maximum shelf life and easy installation.

Specifications (Typical)

• Flow Rate: ~75 GPD (284 L/day)
• Rejection Rate: ~98 % nominal (for TDS/salts)
• Dimensions: ~1.79″ (Ø) × ~11.75″ (L)
• Membrane Type: Thin Layer Composite (TLC)
• Max Pressure: ~100 psi (6.9 bar)
• Max Temperature: ~120 °F (49 °C)
• Free Chlorine Tolerance: ~0.1 ppm (pre-filtration strongly recommended)
• pH Range: ~4–11 (operational)

Compatibility

• Designed for standard residential reverse osmosis membrane housings that accept 1.79″ × 11.75″ elements.
• Works in many under-sink RO systems that specify a 75 GPD membrane.
• Often interchangeable with TLC-series membranes and many OEM brands using 1812 style elements.

Applications

• Under-sink RO Drinking Water Systems — Primary purification stage in home RO systems.
• Cottages & Small Offices — Low-flow water purification with high efficiency.
• RO System Maintenance — Replacement for worn-out membrane elements to restore production and water quality.

Maintenance & Replacement Tips

• Replace every 24–36 months depending on feed water quality, pressure, and use (actual lifetime varies).
• Always pre-filter water with sediment and carbon filters to protect the membrane and extend service life.
• After installing a new membrane, flush and sanitize the system per manufacturer instructions before regular use.

Why Choose Pentair TLC-75?

The Pentair TLC-75 RO membrane combines high rejection capability with broad compatibility and reliable performance. Its thin-film composite construction delivers cleaner, better-tasting water while fitting a wide range of standard RO systems — making it a versatile and cost-effective replacement choice for many residential applications.