Replacement parts for undersink water filters, including filter housings, brackets, faucets, fittings, tubings and more.
If you have trouble identifying the parts for your unit, or if you aren't sure if a part will work for you, please give us a call or email for advice.
Filter cartridges should also be changed regularly (about once a year). We have a separate catalog for those.
We recommend the following parts with any undersink order.
A solid plastic spanner wrench for opening and tightly closing Flowmatic 2.5" X 9.75" filter housings. Fits our Countertop Filters, Undersink Filters, Reverse Osmosis Units, and Pura UV1 units.
Fits standard Flowmatic filter housings for 2.5" width cartridges. Used in our Countertop Filters, Undersink Filters, Reverse Osmosis units, and standard sized Garden Hose Filters.
A small amount of silicone grease should be applied lightly to o-rings during cartridge changes to ensure years of leak-free use. This small packet will lube many o-rings.
Standard filter housing for 2.5" x 9.75" cartridges. 1/4" NPT threaded ports.
Standard filter housing for 2.5" x 9.75" cartridges. 1/4" NPT threaded ports.
Standard filter housing for 2.5" x 9.75" cartridges. 3/8" NPT threaded ports.
Aluminum mounting bracket with eight screws: four for attaching the filter housing to the mounting bracket and four for attaching the bracket to a wall.
Aluminum mounting bracket with ten screws: eight for attaching the filter housing to the mounting bracket and two for attaching the bracket to a wall.
Aluminum mounting bracket with fourteen screws: twelve for attaching the filter housing to the mounting bracket and two for attaching the bracket to a wall.
The faucets below are available in a variety of colors and finishes from our complete faucet catalog.
The tough but attractive Tomlinson Pro-Flo faucet is the standard faucet for all our undersink filters and reverse osmosis units. It’s a sturdy top performer that uses the proven, traditional up/down handle style.
Tomlinson's beautiful “Value” Contemporary ledge faucet is a zinc alloy light-bodied version of the top-of-the-line Contemporary style. It has an easy operating 1/4 turn handle. The spout swivels 360 degrees. Easy to install with preinstalled 1/4" tubing.
The Tomlinson Designer Faucet is an elegant faucet of superior quality that's designed for years of service. This unique faucet, which uses a quarter turn ceramic disc valve, is as functional as it is beautiful.
Tomlinson Contemporary Faucet, Polished Chrome
This valve can be used to tap into copper pipe from 3/8" to 5/8" diameter. It comes with hardware to make a standard 1/4" compression fitting, and a 1/4" John Guest faucet/refrigerator adaptor is also included. (Please tell us if you need to connect to 3/8" tubing.)
Use with 3/8" flexible water lines (typically, braided stainless steel). Connects to the lower end of the flexible line. This adapter comes with inline valve (see jg039 below) and tubing. Everything you need to connect a 1/4" inlet line.
Use with 1/2" flexible water lines (typically, braided stainless steel). Connects to the upper end of the flexible line. This adapter comes with inline valve (see jg039 below), plug-in elbow, and tubing. Everything you need to connect a 1/4" inlet line.
Contains four #10 Screws, 3/4" long, to mount filter housing to bracket. Use this set if you are attaching a housing without a membrane clip.
1/4" NPT male threading. Joins two filter housings (e.g., can be used to create a double filter from a single filter.) This is a high quality QMP nipple with o-ring seals to prevent leaks.
3/8" NPT male threading. Joins two filter housings (e.g., can be used to create a double filter from a single filter.)
One foot of white 1/4" tubing. To order multiple feet, change quantity in shopping cart.
One foot of white 3/8" tubing. To order multiple feet, change quantity in shopping cart.
Use as an inlet valve, a shutoff valve for the icemaker line, or anywhere an inline valve is needed.
Use as an inlet valve, a shutoff valve for the icemaker line, or anywhere an inline valve is needed.
Braided stainless steel supply line for connecting a 3/8" male compression fitting (eg., a cold water valve) to a 3/8" male compression fitting.
Braided stainless steel supply line for connecting a 3/8" male compression fitting (eg., a cold water valve) to a 3/8" male compression fitting.
Braided stainless steel supply line for connecting a cold water valve or a Simple Undersink Filter to a standard faucet stem with 1/2" connection.
Brass elbow with 3/8" compression threading by 3/8" male NPT.
Brass connector with 3/8" compression threading by 3/8" male NPT.
Consists of a John Guest tubing tee, a John Guest refrigerator connector, a John Guest inline valve, and enough 1/4" tubing to connect your RO unit to your refrigerator. When ordering, please tell us in the “comments” section how much tubing you'll need.
(whole house & well units)