iSpring WSP-50 Reusable Spin Down Sediment Filter

Name: iSpring WSP-50 Reusable Spin Down Sediment Filter
Brand: iSpring
Price: 69.99 USD

Sediment filter · 20 GPM · Treats sediment · $70 at iSpring as of Oct 2026

The iSpring WSP-50 is a spin-down sediment filter that catches sand, rust, dirt and other large particles on a flushable 50-micron 316L stainless mesh screen. The clear PCTG housing shows when a flush is needed, and the lead-free brass head is double-threaded with 1 in. MNPT and 3/4 in. FNPT ends. Flow is 20 GPM per iSpring's listing title (the spec table gives no figure), with a 115 psi maximum, 25-80 psi recommended and 40-100 F for indoor use.

The same housing is sold as the WSP-100, 200, 500 and 1000 with coarser mesh at the same price. The screen is flushed daily to weekly depending on load through a valve that takes 3/8 in. OD tubing, and iSpring says it usually lasts 1-2 years. The unit is 3.5 by 3.5 by 9 in. with a mounting bracket, and has passed a 500 psi burst test and a 100,000-cycle water hammer test. No NSF/ANSI certification is cited.

Price was $69.99 at ispringfilter.com as of Oct 2026; a push-fit ball-valve bundle is $133.99. Warranty is 1 year on the brass body, with iSpring's 30-day money-back and lifetime tech support. Install is DIY with a downloadable manual.

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iSpring WSP-50 Reusable Spin Down Sediment Filter well water sediment filter

Specifications

Verified 2026-10-06. Fields the manufacturer does not publish are marked “Not stated”.

iSpring WSP-50 Reusable Spin Down Sediment Filter specifications
Model	WSP-50 (50 micron). WSP-100, WSP-200, WSP-500 and WSP-1000 are the same housing with a different mesh cartridge.
Type	Sediment filter
Treats	Sediment; also sand, rust, dirt, large particles
Service flow	20 GPMWSP series manual (Ver.05/2025): 'The G 1 in. outlet fitting provides a maximum 20 GPM flow rate'. Pressure figures conflict between iSpring documents: the product page says '40-100F, 15-115 psi', its FAQ says 'The recommended water pressure for this filter is 25-80 psi', and the manual says 'Suitable pressure range: 20-90 psi'. Indoor use only.
Micron rating	50 micron50-micron 316L stainless mesh standard. Same housing available as WSP-100 (100 micron), WSP-200, WSP-500 and WSP-1000, all $69.99 on ispringfilter.com (WSP-100 shown out of stock on 2026-10-05). Screen is flushable and reusable; iSpring says it 'usually lasts 1-2 years'.
Capacity	Not statedReusable; flush daily to weekly depending on sediment load. Housing holds 5 oz.
Media / technology	316L stainless steel mesh screen in clear PCTG housing with lead-free brass head and flush valve
Stages	1
Connection	1 in. MNPT + 3/4 in. FNPT
Installation	DIYDouble-threaded 1 in. MNPT / 3/4 in. FNPT ends, mounting bracket included, downloadable manual; flush valve takes 3/8 in. OD tubing (garden-hose barb on the bundle version). Indoor use.
Warranty	1-year manufacturer warranty'1-year warranty' on the lead-free brass body per product page; iSpring offers 30-day money-back and lifetime tech support on its systems.
Certifications	Not statedLead-free brass stated; no NSF/ANSI or other third-party certification is cited for this model on the product page or in the WSP series manual. iSpring's own 'NSF Certified Collections' page lists only the jumbo auto-flush WSP-ARJ / WSPSL-ARJ models under pre-filtration, not the WSP-50. WQA certified-product search (find.wqa.org) returned zero results for 'iSpring', 'iSpring Water', '123Filter', 'WGB32B' and 'RCC7AK' on 2026-10-06 (a control search for 'Culligan' returned listings). NSF certified-product database (info.nsf.org), searched 2026-10-06: Exact model not listed. The iSpring NSF/ANSI/CAN 372 listing (Facility: Haining, Zhejiang, China; "Plumbed-In[LL]") names WSP50ARJ, WSP50ARJ-BP, WSP50ARJ-E, WSP 50SL-ARJ, WSP 50SL-ARJ-BP and the 100/200/500 equivalents, with "[LL] Product conforms with lead content requirements for “lead free” plumbing". Plain WSP-50 / WSP-50SL are not named; do not treat the ARJ entries as covering this row without iSpring confirming.
Dimensions	3.5 x 3.5 x 9 in.
Weight	1 lb
Price	$70 at iSpring as of Oct 2026

Published features

Flushable, reusable 50-micron stainless steel screen
See-through housing for visual monitoring
Lead-free brass head with 1 in. MNPT and 3/4 in. FNPT threads
Passed 500 psi explosion-proof test and 100,000-cycle water hammer test
Interchangeable 50/100/200/500/1000 micron cartridges
Mounting bracket included

Pros and cons

Pros

Lowest-cost first stage for sandy well water; no cartridges to buy
Clear housing shows when a flush is needed
Dual-thread head fits 3/4 in. or 1 in. lines

Cons

50 micron is too coarse to be a final sediment stage
Only a 1-year warranty
Weight listed as 1 lb on the base page but 4 lb on the push-fit bundle listing

Our take

At $69.99 with no cartridges to buy, the WSP-50 is the cheapest sensible first stage for a sandy well, and the dual-thread head means it fits most pressure-tank outlets. Fifty microns is too coarse to be the final sediment stage, so follow it with a 5-micron cartridge. The 1-year warranty is short next to Rusco's similar 12 months on a US-made housing.

Not sure it is the right size for your flow and your water test? Work through the sizing guide, or compare every system we cover on the best sediment filters for well water (2026) list.

Where to buy

$70 at iSpring as of Oct 2026. Prices change; the links open the current listing.