* Niagara  Compatible Replacement Water Filters & Reverse Osmosis Membranes, RP-XM035, RP-S05, RP-AC10, RP-CB10, RP-AC11

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Large selection of replacement water filters, reverse osmosis membranes, testing kits and water filtration repair parts.  From one water filter or reverse osmosis membrane to case quantity discounts.
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Niagara  Compatible Replacement Water Filters & TFC Reverse Osmosis Membranes - 4 , 5 and 6 Stage RO Systems
 

RP-S05 * Niagara  Compatible Sediment Pre Filter 4 Stage TFC Reverse Osmosis RO Pure Water System Sediment Pre Filter

RP-S05 * Niagara Compatible Sediment Pre Filter For 4, 5 and 6 Stage RO Systems
The first filter housing contains a sediment pre filter. This filter needs changed at least every 6 months, so order twice as many of these as the carbon filters.

Price Each: $5.99

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GE Osmonics Purtrex PX-5-978 Sediment Water Filter # 93023

GE Osmonics Purtrex PX-5-978 5 Micron Sediment Water Pre Filter. True-graded density pure polypropylene depth replacement water filter. # 93023 9 7/8" long X 2 1/2" diameter. 40 per case, sold individually. Order a case and save even more.

RP-AC10 * Niagara  Compatible GAC Carbon Pre Filter

RP-AC10 * Niagara Compatible GAC Carbon Pre Filter For 5 and 6 Stage RO Systems
The second  filter in the 5 and 6 stage RO systems is the GAC carbon pre filter.  It has a hard plastic outer shell.  This filter needs changed at least every 12 months.

Price Each: $9.99

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Pentek GAC-10 # 155109 GAC10 Taste & Odor Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands

Pentek GAC-10 # 155109 GAC10 Taste & Odor Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands Granular Activated Carbon Taste & Odor Water Filter. 9 3/4" long X 2 7/8" diameter. 12 per case, sold individually. Ametek # 155109 GAC Series cartridges effectively reduce unwanted tastes, odors and chlorine from your drinking water. They are designed to allow maximum contact between the water and carbon, ensuring maximum adsorption. The construction of the cartridge allows water to enter at one end and pass through the entire length of the cartridge, while an internal expansion pad minimizes channeling or bypass. Before the water exits the cartridge, a 20-micron post filter helps remove carbon fines and other suspended particles from the filtered water. Order a case and save even more.

RP-CB10 * Niagara  Compatible Carbon Block Pre Filter TFC Reverse Osmosis RO Pure Water System Carbon Block Pre Filter


RP-CB10 * Niagara Compatible Carbon Block Pre Filter For 4, 5 and 6 Stage RO Systems
The second  filter (&3rd filter in the 5 stage system) is the carbon block pre filter.  This filter needs changed at least every 12 months.


Price Each: $9.99

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KX Matrikx 10/2 Carbon Block Water Filter # 10-250-190-975

The KX 10/2 has been discontinued. If you order the KX 10/2 you will receive the GGN 10/2 Carbon Block Filter. 9 7/8" long X 2 1/2" diameter OD X 1 1/4" diameter ID. 25 per case, sold individually. Order a case and save even more.

RP-AC11 * Niagara  Compatible GAC Carbon Post Filter TFC Reverse Osmosis RO Pure Water System Carbon GAC Post Filter


RP-AC11 * Niagara Compatible GAC Carbon Post Filter
The post filter is a horizontally mounted GAC carbon post filter.  The CL10RO-T/33 uses FNPT threads.   Order the correct tube size and connectors.


Price Each: $11.99

Thread Size FNPT

Optional Connectors

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Omnipure CL-10RO-T/33 GAC Inline Water Filter

Omnipure CL-10RO-T/33 GAC - 10" X 2" Carbon Inline Replacement Post Water Filter - GAC (granular activated carbon) Acid Washed Carbon - Should be changed at least every 12 months. 25 per case, sold individually. Order a case and save even more.

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Four Stage Standard RO Water Filter Change Kit


Save and buy a one year filter change as a kit for your * Niagara 4 Stage Reverse Osmosis System.


Price Each: $33.99

Inline GAC Filter Connector Size

Optional Jaco Connectors For Threaded Post Filter

Number of Filter Sets

Omnifilter Brand

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Four Stage Standard RO Water Filter Change Kit

Four Stage Standard RO Water Filter Change Kit - One Year Filter Change Kit: (2) 5 Micron Poly Spun Sediment Pre Filters (9 7/8") (1) 10 Micron Extruded Carbon Pre Filter (9 3/4") (1) In-Line GAC Post Filter (Granular Activated Carbon 10") The sediment prefilter needs changed twice as often as the carbon filters, so our kit includes an extra one. Membranes are sold separately. LIMITED TIME OFFER - Omnifilter prefilters and post filter for additional savings. The Omnifilter post filter is only available for post filters using 1/4" quick connections.

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* Niagara Compatible Replacement Reverse Osmosis RO Membranes

The Membrane Housing is the large horizontal housing on top.

Niagara compatible 4 and 5 stage system replacement membrane - 36 GPD


RP-XM035 * Niagara compatible 4 and 5 stage system replacement membrane - 36 GPD


Price Each: $59.99

Replacement Membrane Housing

Replacement Flow Restrictor

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Dow Filmtec TW30-1812-36 RO reverse osmosis membrane # 80719

Dow Filmtec TW30-1812-36 TFC 36 GPD RO reverse osmosis membrane - standard size 1.75" X 11.75" Part # 80719

Learn How To Upgrade Your Reverse Osmosis Membrane Capacity

TDS Meter - Test For Total Dissolved Solids In Water - Reverse Osmosis Membrane Tester - TDS Meter


TDS Meter - Test For Total Dissolved Solids In Water - Reverse Osmosis Membrane Tester - TDS Meter


Price Each: $37.99

Calibration Solution

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TDS Meter - Tester. The Only Way To Know If Your Reverse Osmosis RO Membrane Is Performing Correctly - Tests for TDS - Total Dissolved Solids. A Must For All RO System Owners. Compare Incoming Feed Water To Treated Water - Replace Membrane If Less Than 80% of TDS Is Being Removed - Total dissolved solids (TDS) are the total weight of all solids (minerals, salts or metals) that are dissolved in a given volume of water expressed in milligrams per liter (mg/L), or in parts per million (PPM). The lower the TDS level in the water, the more efficiently your body's cells actually get hydrated by the water that you drink. The higher the TDS levels in the water, the greater the probability of harmful contaminants that can pose health risks or hinder the absorption of water molecules on the cellular level. 17 PPM of TDS = 1 grain of hardness. Highly efficient and accurate due to its advanced microprocessor technology. Hold Function: saves measurements for convenient reading and recording. Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries. Measurement Range: 0-9990ppm. From 0-999ppm, the resolution is in increments of 1ppm. From 1,000 to 9,990ppm, the resolution is in increments of 10ppm, indicated by a blinking 'x10' image. Display: large and easy-to-read LCD screen. Factory Calibrated: recalibration is not necessary, but can be done easily with a watch screwdriver. There's no need for messy solutions to initially calibrate the meter. Range: 0 - 9990ppm (mg/L) Accuracy: +/- 2% ATC: Built-in sensor for Automatic Temperature Compensation of 1 to 50 degrees Celsius (33 to 122 degrees Fahrenheit) Power source: 2 x 1.5V button cell batteries (included) Battery life: over 1,000 hours of continuous use Dimensions: 14 x 2.3 x 1.5cm (5.5 x .9 x .55 inches) Weight: 32g (1.13 oz) Simple to use for Reverse Osmosis membrane monitoring. Measure the incoming water and the RO water. Divide the larger number into the smaller number and subtract that decimal from 1. The resulting decimal is the percent of TDS that the membrane is removing. We really like this tester and think that anyone who wants to know about the quality of their water should have one of these TDS Meter Testers.

Learn more about using TDS meters and total dissolved solids

O-ring for filter housing


Pentek # 151121 O-Ring For Slim Line Water Filter Housing Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands


Price Each: $4.99

Dow 111 Silicone Sealant

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Pentek # 151121 O-Ring For Slim Line Water Filter Housing Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. O-Ring For Slim Line Water Filter Housing. Buna-N FDA Grade. (Slim Line Housings Use A 3 1/2" diameter "O" Ring) Ametek # 151121 Same as Culligan OR-38 O-ring.

Be Sure To Order Dow 111 Silicone Sealant To Help Prevent Leaks!

Dow Corning  111 5 gram O-ring Silicone Lubricant and Sealant


Dow Corning (Molykote) 111 6 gram O-ring Silicone Lubricant and Sealant - Be sure to lube your O-rings to help prevent leaks.


Price Each: $3.99

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Dow Corning/Molykote 111 6 gram O-ring Silicone Lubricant and Sealant - 6 gram pillow pack. (like a ketchup packet) Great O-ring sealant and lubricant. FDA and NSF approved. (Do Not Use Petroleum Jelly As It May Break Down O-rings Or Housings) This is the same premium grade silicone sealant and lubricant used in underwater photography cameras, scuba gear and other underwater applications that simply can't afford leaks. Why not use the best for your reverse osmosis or drinking water filtration system?

Dow 111 Silicone MSDS Safety Sheet

Ametek / US Filter SW-1 Slim Line Water Filter Housing Wrench # 150294


Pentek SW-1A # 150539 SW1 Slim Line Water Filter Housing Spanner Wrench Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands


Price Each: $6.99

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Pentek SW-1 # 150539 SW1 Slim Line Water Filter Housing Spanner Wrench Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. SW-1 Water Filter Housing Wrench. Fits 4" Slim Line Housings. (Slim Line Housings Have A 3 1/2" diameter "O" Ring) Ametek # 150294 Only for use in loosening filter housings, never to tighten. Overtightening may cause damage to the O-rings and make re-opening VERY difficult. Hand tighten only. Fits most standard style RO systems. Replaces 150294. For really stubborn filter housings our technicians will use two wrenches together for maximum power where one wrench might break or not do the job. Our techs know the tricks.

Order New O-rings And Be Sure To Lube Them With Dow 111 Silicone Sealant To Prevent Leaks

Automatic shut off valve for reverse osmosis system


Automatic Shut Off Valve for reverse osmosis system - ASO ASV


Price Each: $19.99

Mounting Hardware

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Auto Shut Off RO 1 - Automatic shutoff valve for reverse osmosis systems. ASO ASV Easy to use 1/4" OD Tube Jaco connectors included. - The "in & out" markings are on the top of the valve. The top side of the valve is the high pressure side and the bottom side is the low pressure side. The high pressure from the filter housings goes to the "in" on the top of the valve. Then the high pressure "out" goes to the membrane housing "in". The membrane housing low pressure "out" connects to the "in" on the bottom side of the valve. The "out" on the bottom goes to the tank. The valve automatically shuts off production when the tank pressure reaches approximately 65% of the incoming line pressure.

Amtrol  RO Mate 4 RO Replacement Tank


Amtrol RO 4 Reverse Osmosis Replacement Accumulator Water Tank


Price Each: $79.99
Sale Price: $49.99
Savings: $30.00

Optional Tank Ball Valve

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Amtrol RO 4 RO Replacement Tank for Reverse Osmosis Systems. 4.4 Gallon (15" high X 11" diameter - including base) SS Stainless Steel Connection Stem - Connection Size: 1/4" MNPT - Valve Optional. Ball Shut Off Valve Optional.

We recommend that you replace the valve when replacing the tank.

Air pressure gauge for reverse osmosis water accumulator tanks


Air pressure gauge for reverse osmosis water accumulator tanks


Price Each: $17.99

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Air pressure gauge for reverse osmosis water accumulator tanks - Specially calibrated for reverse osmosis system tanks. Scale from 1 to 20 PSI. Large scale reading over small PSI range allows optimum accuracy. Just like car tires lose air pressure, so does the bladder of your reverse osmosis water accumulator tank. Improper tank air pressure will cause your system to operate improperly. This is a must for all reverse osmosis system owners.


Be sure to check our Parts Department for important parts such as TDS Testers, Replacement Tanks, O-rings , Housing Wrenches and more parts for your Niagara reverse osmosis pure water filtration system.

* Niagara is the registered trademark of Niagara, the manufacturer of Niagara brand water treatment equipment.  The replacement filters and membranes listed above are not manufactured or endorsed by Niagara .  Rather, these filters and membranes are manufactured by other companies.  While these filters and membranes are compatible for use in Niagara  brand water treatment equipment, we make no representation as to whether using these filters and membranes is consistent with the warranty and specifications applicable to Niagara  equipment.


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Replacement water filters and reverse osmosis membranes