Whole House Inline Water Filter 1" + 2x PP20 USTM String Filter Cartridge
Inline 10" filter for installation at the cold water inlet to the house or before household appliances. The body with a transparent cov Read moreShow less
Inline 10" filter for installation at the cold water inlet to the house or before household appliances. The body with a transparent cover and a head with a 1" brass thread facilitates cartridge inspection. The set includes 2 USTM PP20 string mechanical cartridges (20 microns) to protect the system from sand, rust, and sediments. The package includes a wrench, seals, a mounting plate, and an air vent.
Benefits
- Captures sand and sediment
- Captures rust particles
- Protects tap aerators from sediment particles
- Protects subsequent filtration stages
Specifications
- Application
- Apartment, Whole house
- Cartridge length
- 10″
- Cartridge type
- Sediment, String wound sediment
- Connection size
- 1″
- Filtration rating
- 20 µm
- Housing standard
- Slim 10″
View full specifications
- Installation form
- Inline / pipe-mounted
- Maximum flow
- 25 l/min
- Maximum working pressure
- 6 bar
- Maximum working temperature
- 45 °C
- Product type
- Pre-filtration system
- Technology
- Mechanical filtration
Description
The Whole House Inline Water Filter 1" + 2x PP20 USTM String Filter Cartridge is a solid water filter designed for installation at the cold water inlet to a house, apartment, or before selected household appliances. This practical water filtration system helps reduce the presence of sand, rust, and sediments, protecting the plumbing system, fixtures, and home appliances. The set includes two 20-micron mechanical string cartridges, a mounting wrench, seals, a mounting plate, and an air vent, making the kit ready for convenient use in everyday water treatment.

10" 1" inline filter for protecting installations and devices
This is a reliable solution for the preliminary mechanical filtration of utility water. The 10" inline housing with a 1" connection is ideal wherever effective protection of the installation against solid contaminants and convenient monitoring of the filter cartridge condition matter.
The filter can operate as a single element of the system or as part of a more extensive filtration setup. It works well with various solutions used in home water treatment, including systems where reverse osmosis, an osmosis filter, or another more precise purification system is used later on.
Key advantages of the set
- inline water filter for installation at the cold water inlet to a house or apartment,
- protection of the water system, fixtures, and household appliances against sand, rust, and sediments,
- housing with a transparent sump that makes it easy to check the level of cartridge contamination,
- head with a brass 1" thread,
- set includes 2 x USTM PP20 filter cartridges, mechanical and string type,
- filtration accuracy of 20 microns,
- can be used individually or in series,
- complete set of accessories for easy installation and operation.
Versatile application
The filter is ideal for installation on the pipe supplying cold water to an apartment or before expensive household appliances. As a result, it acts as the first stage of installation protection, reducing the buildup of mechanical contaminants in fixtures and connected devices.
The housing works with a wide range of mechanical, specialty, and carbon cartridges available on the market. This means great flexibility for future system expansion and easy adaptation to the user's specific needs.

The set includes 2 string cartridges with 20M filtration accuracy, so the kit is ready to use right away.
Effective mechanical filtration with PP20 string cartridges
A string cartridge, also known as a fiber cartridge, is one of the popular solutions used in mechanical water filtration. Its operation is based on trapping contaminants through a dense weave of fibers, which effectively reduces the presence of solid particles in the water.
What the USTM PP20 cartridge provides
- captures all contaminants up to 20 microns in size,
- has a gradient structure that ensures more precise and efficient filtration,
- features a higher fiber weave density of the strings compared with other cartridges available on the market,
- works perfectly in inline filters used for the whole house or apartment and in kitchen water filters under the sink,
- is recommended for protecting the water system, household appliances, and fixtures,
- has PZH approval,
- was manufactured in Poland.
The applied filter cartridge is a good choice wherever effective pre-filtration is needed before subsequent stages of water purification.

Increased filtration efficiency
Thanks to the change in fiber density and type along the cartridge, it is possible to more effectively retain a variety of contaminants. Fibers of different densities better capture particles of different sizes, which translates into higher filtration efficiency and better quality purified water.
Longer service life
The gradient structure of string cartridges promotes longer operation before the cartridge becomes fully clogged. In practice, this means less frequent replacement, more convenient use, and lower maintenance costs for the home water filtration system.
Durable housing construction
The two-piece 10" inline housing by WodaRO® provides reliable protection for the water installation and everyday user convenience.

- It consists of a transparent sump and a head with a 1" brass thread.
- The durable, high-quality housing guarantees safe and stable use.
- The transparent sump makes it easy to assess the level of cartridge contamination.
Dual sealing system
The product is equipped with two sealing O-rings, which ensure maximum housing tightness. This is an important element contributing to the safe and stable operation of the entire set.
The gasket also helps maintain pressure inside the inline housing, preventing air from entering the system.
Air vent and stable system operation
The housing has an air vent that allows pressure inside the housing to balance with atmospheric pressure. This solution helps eliminate the risk of damage to filtration or sealing elements.
Thanks to the air vent, water filters and inline housings can operate more efficiently, regardless of operating conditions and pressure in the water system. This improves system performance and extends the service life of the equipment.

Installation and expansion options
The filter can be installed individually or connected in series, allowing the system to be flexibly adapted to the building's water demand and water quality. Such a setup works well as the first stage of further water treatment, as well as the first protective stage before more advanced filtration solutions.
The filter is designed for cold water operation. The transparent sump makes it easy to monitor the level of cartridge contamination, and regular cartridge replacement helps maintain proper efficiency and filtration effectiveness.
Set contents
- 10" inline housing,
- 2 x PP20 USTM filter cartridges, mechanical, string type,
- sealing O-rings,
- mounting wrench,
- mounting plate,
- air vent,
- gaskets.
The set includes everything you need for quick and proper installation and convenient start-up.
Additional important information
- Connection diameter: 1"
- number of pieces in the set: 2

Technical specification
| Product type | Inline flow water filter |
|---|---|
| Intended use | Whole house / apartment / before household appliances |
| Maximum operating pressure | 6 bar |
| Maximum operating temperature | 2-45°C |
| Cartridge standard | 10" |
| Housing brand | WodaRO® |
| Housing construction | Two-piece |
| Sump | Transparent |
| Head | With 1" brass thread |
| Sealing system | Two sealing O-rings |
| Air vent | Yes |
| Cartridge included | Yes |
| Cartridge type | Mechanical, string type |
| Cartridge model | USTM PP20 |
| Filtration accuracy | 20M |
| Filter height | 25 cm |
| Diameter | 5.5 cm |
| Service life | up to 14000 L / up to 6 months* |
| Capacity | up to 25 L/min |
| Approval | PZH |
| Country of cartridge manufacture | Poland |
FAQ
What is the Whole House Inline Water Filter 1" + 2x PP20 USTM String Filter Cartridge 10" 1" used for?
It is a water filter intended for preliminary mechanical filtration. It is most often installed at the cold water inlet to a house or apartment, or before household appliances, to reduce the amount of sand, rust, and sediment entering the system.
What contaminants do PP20 cartridges capture?
The included USTM PP20 mechanical string cartridges capture contaminants up to 20 microns in size. This effectively reduces the presence of solid particles such as sand, rust, and sediment.
Is the filter suitable for whole-house installation?
Yes, this is an inline flow filter designed for use at the cold water inlet to a house or apartment. It can also be used locally, for example before a selected household appliance.
Are filter cartridges included in the set?
Yes. The set includes 2 USTM PP20 filter cartridges with a mechanical, string-type construction and 20M filtration accuracy.
What mounting accessories are included?
The kit includes the inline housing, 2 cartridges, sealing O-rings, gaskets, a mounting wrench, a mounting plate, and an air vent. This makes installation and later operation more convenient.
What cartridges fit this housing?
The housing uses the 10" standard and works with a wide range of mechanical, specialty, and carbon cartridges available on the market. This makes it easy to adapt the water filtration system to your own needs.
What is the purpose of the transparent sump in the Whole House Inline Water Filter 1" + 2x PP20 USTM String Filter Cartridge?
The transparent sump allows for a quick assessment of the cartridge contamination level without disassembling the housing. This is a practical solution that makes it easier to monitor filter operation and plan cartridge replacement.
What function does the air vent serve?
The air vent balances the pressure inside the housing with atmospheric pressure. This helps reduce the risk of damage to filtration elements and seals and supports more stable operation of the entire system.
What are the basic operating parameters of the filter?
The filter has a 1" connection, uses 10" standard cartridges, the maximum working pressure is 6 bar, and the operating temperature range is 2-45°C. Cartridge capacity reaches up to 25 L/min, and service life is up to 14000 liters or up to 6 months.
Choose a set or individual cartridges. Replacement intervals depend on the cartridge and operating conditions.