WATER FILTERS
"Put them all (4) on myself. I’m 83 years old now. Hard to get down under my sink. But I made it."
PuROTwist 4000 RO Filter Replacement Kit with 75 GPD Membrane
Q&As
PuROTwist 4000 RO Filter Replacement Kit with 75 GPD Membrane
Q&As
Part Number:
YSM-PURO4T75
Complete PuROTwist 4000 filter kit with 75 GPD membrane for fast, all-in-one RO maintenance.
Read More
Subscription Details
Automatic deliveries and charges at your selected frequency. Skip, reschedule, or cancel through your subscription account. View subscription details.
IN STOCK
Description
1-Year Filter Replacement Kit for PuROTwist 4000 with 75 GPD TFC Reverse Osmosis Membrane and FREE Replacement O-Rings
INCLUDES:
- STAGE 1 - 1x Sediment Pre-Filter (Q5605) - Replace every 6-12 months or as needed
- STAGE 2 - 1x Carbon GAC Pre-Filter (Q5621) - Replace every 6-12 months or as needed
- STAGE 3 - 1x RO Membrane TFC 75 GPD (TQ56-75-XHR-FC200) - Replace every 24 months
- STAGE 4 - 1x Carbon GAC Post Filter (Q5633) - Replace every 6-12 months or as needed
- O-RINGS - FREE Replacement O-rings for Filter Heads (4x H-118 and 4x H-011)
Includes High-Efficiency Membrane: This PuROTwist 4000 filter kit features a 75 GPD membrane built on a 1:1 pure-to-wastewater ratio, a major improvement over older 3:1 or 4:1 RO membranes that waste far more water per gallon produced — well-suited for households with moderate to high water use.
We offer two replacement filter kits so you can get exactly what you need — and avoid paying for filters you don’t.
-
Year 1 Kit found on this page (Includes RO Membrane):
Ideal for your first full replacement, this kit includes all filters plus the RO membrane, which typically lasts up to 24 months. -
Year 2 Kit (Without RO Membrane):
After the first year, you only need to replace the pre- and post-filters, since the RO membrane is still good for another year. This kit helps you save money while keeping your system performing like new.
*Filters may need to be replaced more often than indicated, depending on water contaminant levels and volume of water being treated.
This Item Fits These Select Systems
Replacements & Add Ons
Replacements for This Item
View All System Parts
Stage 2
Omnipure Q5621 Carbon Block Filter 10 Micron 2.5 " x 12"
Replace Every 12 Months
See Details
Stage 3
Omnipure TQ56-75-XHR-FC200 RO membrane 75 GPD with Flow Restrictor
Replace Every 24 Months
See Details
Stage 4
Omnipure Q5633 Granular Carbon Filter GAC T33 2.5" x 12"
Replace Every 12 Months
See Details
Helpful Info & Downloads
Overall rating: 5.0 / 5 from 4 reviews.
AI Generated Review Summary
Summary topics
Review topics: [].
Review highlights
Reviews
WATER FILTERS
"Put them all (4) on myself. I’m 83 years old now. Hard to get down under my sink. But I made it."
homeowner
"This is the greatest water filter system we have ever purchased. Thank you for introducing it to us."
Service
"Service was fast once we called. We thought we were on a schedule where you would come every 3 months and we didn't have to call"
Great product
"easy to install and use."
Q&A
Q:
What is included in the PuROTwist 4000 75 GPD kit?
A:
The kit includes the system's sediment prefilter, carbon prefilter, 75 GPD quick-change RO membrane with matched flow control, carbon postfilter and replacement Q-Series head O-rings. Check the listing component numbers against your installed configuration.
Q:
Does this kit include the RO membrane?
A:
Yes. It includes the 75-gallon-per-day membrane. If your membrane is still within its service life, choose the PuROTwist 4000 annual filter kit labeled membrane sold separately instead.
Q:
Will this kit fit an original RainSoft or Aqua-Cleer manifold?
A:
Only after the system has been converted to the compatible PuROTwist 4000 quick-change manifold. The cartridges do not directly attach to an unconverted proprietary RainSoft Ultrefiner II or Aqua-Cleer Advanced head.
Q:
Which converted systems can use YSM-PURO4T75?
A:
It supports a PuROTwist PT4000 75 GPD configuration and approved converted Aqua-Cleer Advanced, Pure Blue and Ultrefiner II applications. Confirm that the installed membrane is the 75 GPD PuROTwist version.
Q:
How often should the filters and membrane be replaced?
A:
Replace the sediment and carbon cartridges about every 6 to 12 months and the membrane about every 24 months under typical conditions. Water quality, pressure and usage can shorten these intervals.
Q:
Why must the replacement membrane have a matched flow control?
A:
The flow control regulates concentrate flow and is sized to the membrane production rate. Using a mismatched restrictor can reduce output, increase wastewater or shorten membrane life, so install the included 75 GPD membrane assembly as supplied.
