The MS30FP50-B-T Shelco 50-micron polypropylene 30″ x 2.5″ string-wound filter cartridge case is a bulk replacement option for dependable depth filtration and routine maintenance. String-wound cartridges trap sediment throughout layers of wound media, making them a strong choice for consistent dirt-holding capacity and predictable changeouts. This 50-micron option is typically selected as a coarse first-stage filter to capture larger particles and protect downstream filters, valves, membranes, and equipment.
Model number: MS30FP50-B-T
Micron rating: 50 microns
Media type: String-wound depth filtration cartridge, polypropylene
Sold as: Case only (bulk quantity)
If your product page lists a specific case quantity, keep that number in this field exactly as shown on the page.
Cartridge size and housing compatibility
- Designed for standard-length housings that accept this cartridge size and diameter
- Confirm your current cartridge length, diameter, and housing style before ordering
- Match the model number on your current cartridge whenever possible for the fastest compatibility confirmation
What is the MS30FP50-B-T 30″ x 2.5″ String-Wound Filter Cartridge Used For?
- Coarse sediment prefiltration to capture larger particles before finer filtration stages
- Pretreatment to protect carbon filters, RO membranes, DI resin, UV systems, and specialty media
- Whole house and light commercial sediment reduction where particulate causes plugging, wear, or cloudy water
- Facility maintenance programs where stocking a case reduces downtime and avoids missed service intervals
Compatibility checks
Before ordering, confirm:
- Your housing accepts the same cartridge length and diameter as your current cartridge
- Your application can use 50 micron coarse filtration (first-stage capture of larger particulate)
- If you need finer polishing filtration, use a staged approach (coarse first stage, finer second stage)
Why choose 50 micron
- Captures larger sediment and debris while maintaining strong flow
- Often used as the first stage when sediment load is high
- Helps extend the life of downstream finer filters by reducing the particle load they see
What’s included
- One case of Shelco MS30FP50-B-T string wound sediment cartridges (case only)
Install difficulty
Easy. Standard cartridge replacement in an existing housing.
Installation Guidance for the MS30FP50-B-T 30″ x 2.5″ String-Wound Filter Cartridge
- Shut off water to the filter housing and relieve pressure.
- Place a towel or pan under the housing to catch water.
- Remove the sump and remove the used cartridge.
- Clean the housing sump and inspect the O-ring; replace if flattened, cracked, or nicked.
- Insert the new cartridge, reseat the sump, and hand-tighten.
- Turn the water on slowly, check for leaks, and flush until the water runs clear.
- Recheck for leaks after a few minutes and again later the same day.
Replacement triggers
Replace sediment cartridges when:
- Flow drops noticeably at fixtures or equipment
- Differential pressure rises across the housing (if monitored)
- The cartridge shows heavy discoloration or visible loading
- You reach your planned maintenance interval for your water conditions and usage
Maintenance Schedule for the MS30FP50-B-T
- Inspect and replace based on pressure drop, visible loading, or scheduled maintenance
- Keep spare cartridges on hand for sediment-heavy sources or high-use systems
- If you use staged filtration, replace the coarse stage when it loads to protect the finer stage
Q: What does a 50-micron string-wound cartridge remove?
A: It targets larger sediment and particulate matter, such as dirt, sand, silt, and rust flakes, that can clog equipment and cloud water.
Q: Is a 50-micron filter considered coarse?
A: Yes. It is commonly used as a first-stage sediment filter to protect downstream filtration and maintain a stronger flow.
Q: Will the MS30FP50-B-T string-wound filter cartridge remove chlorine taste and odor?
A: No. This is a sediment cartridge. Carbon filtration is typically used for chlorine taste and odor.
Q: Can I use this before RO, DI, or UV systems?
A: Yes. Coarse sediment filtration is commonly used as pretreatment to reduce particulate loading before finer stages.
Q: Is the MS30FP50-B-T string-wound filter cartridge washable?
A: String-wound cartridges are typically replaced, not washed, because debris is trapped throughout the depth of the media.
Q: How do I confirm the MS30FP50-B-T fits my system?
A: Match the model number and confirm your current cartridge length and diameter match the housing you have.
Q: Why buy a case instead of a single cartridge?
A: A case supports planned maintenance, reduces reorder interruptions, and helps avoid downtime in high-use systems.
Stock up with a case of Shelco MS30FP50-B-T 50 micron string-wound cartridges to keep sediment under control, protect downstream filtration, and stay ahead of maintenance.
| Example Ordering Guide with Options | |||
|---|---|---|---|
| MS | 10 | C | S |
| Product Code | Length | Media | Core |
| MS | 10=10″ 20=20″ 30=30″ 40=40″ |
B=Fribilated Polypropylene
C=*FDA Bleached Cotton E=Polyester F=*FDA Polypropylene G=Glass Fiber N=Nylon P=Industrial Polypropylene R=Rayon U=Natural Cotton W=Industrial Bleached Cotton |
P=Polypropylene S=304 Stainless Steel G=316 Stainless Steel T=Tin Steel |
| 10
–
|
N | 2
–
|
EXP |
|---|---|---|---|
| Micron | Core Cover | Diameter | End Treatment |
| 0.5 1 3 5 10 20 25 30 50 75 100 150 |
Blank=None N=Non-Woven W=Woven |
Blank=2-1/2″ 2=2″ 3=2-3/8″ 4=2-3/4″ 45=4-1/2″ |
EXP=PP Core Extender EXS=SS Core Extender S3=222 w/ Fin End S4=222 w/ Flat End S5=226 w/ Fin End S6=226 w/ Flat End S8=SOE w/ Spring S12=222 w/ Spring EPR=EPR Gaskets B=Buna Gaskets F=Fin End Only FL=Flat End Only |
*FDA cotton and poly meet the FDA guidelines as acceptable for potable and edible liquid contact according to CFR title 21.
Cap Options
Used in 30″ Shelco Housings
