Thompson SeaStrainer

Thompson SeaStrainer

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Because the finest yachts are a compilation of the finest elements, the stainless steel Thompson SeaStrainer is, quite simply, the finest sea water strainer available. We created the Thompson SeaStrainer to last as long as your vessel.

The Thompson SeaStrainer is available in Type 304 and 316 Stainless Steel and features a large conical screen element. The standard screen element is made from 5/64" perforated (0.077" or 2mm) material. And, while this is the industry standard, Miller-Leaman stocks a variety of screens to match your custom application. Precisely crafted by experienced professionals, the Thompson SeaStrainer is a brilliant selection for premium applications. Clean Design. Highly polished stainless steel. Rigorously tested welds. Technically adept customer service technicians. Superior technology.

Optimal design considerations. Pride in workmanship. At Miller-Leaman, we’ve thought through the entire life span of a sea strainer. We have anticipated everything so that you don’t have to. From start to finish, the Thompson SeaStrainer runs at the top of its class.

Whether your next project is an expeditionary or seasonal yacht, commercial vessel, or military craft, the stainless steel Thompson SeaStrainer is your optimal solution for sea water filtration.

Filter Cutaway

High Quality Stainless Steel
Industry’s Lowest Pressure Loss
Patented, Low Maintenance Design
Space Saving Profile
Reduces Capital Costs

Choosing a filter with sufficient surface area is critical in any application. The shape and size of the element are what make the Thompson SeaStrainer more functionally efficient than any other strainer on the market. As water enters the bottom of the strainer housing and flows upward, heavier debris and particulate is accelerated downward (away from the conical screen) into the debris reservoir at the base of the strainer. The particulate is then flushed/drained from the reservoir via the debris flush port. Due to the non-torturous flow path through the strainer, in combination with the large surface area of the conical screens, all models operate with minimal pressure drop. The Thompson SeaStrainer can also be customized to fit your specific vessel requirements.

Miller-Leaman has a filter that will fit your specific needs with units available in connection sizes from 2” to 10”, accommodation flow rates up to 2,000 GPM (higher flow rates are achieved by manifolding multiple filters).

Thompson SeaStrainer Technical Data

Housing (all models):

Type 316 Stainless Steel (recommended for sea water)
Type 304 Stainless Steel (optional)

Strainer Elements:

Screen Frames:Type 316 Stainless Steel
Screen Mesh: Type 316 Stainless Steel

Internal Piping:

2" and 3" Models Use a Type 316 Stainless Steel Riser Pipe
4" Through 10" Use a PVC Elbow and Riser Pipe Assembly.
CPVC is Avalible By Special Order
Stainless Steel is Also Available By Special Order

Gaskets:

EPDM is Standard, Other Compounds Are Available By Special Order
Gaskets Include: Lid Gasket, Disk Gasket, and Filter Gasket (bottom gasket)

Lid Enclosure-Nut/Bolt Washer Assembly (bolted lid models only)

Bolt, Washer and Nut: Grade 5

Band Clamp Assembly (clamped lid models only)

Clamp and Handle: T316 Stainless Steel

Ports (all models)

1/4" FNPT T316 Stainless Steel Inlet/Outlet Gauge Ports Are Standard
1 1/2" NPT T316 Stainless Steel Debris Flush/Drain Port Are Standard

Screen Options Available

Standard: 5/64" perforated (.077" or 2mm
Fine Mesh Options: 16, 30, 40, 50, 60, 80, 100, 120, 150, 200

Pressure loss curves pressure drop (PSI) U.S. gallons per minute (assumes water with 140 micron screen)

Thompson SeaStrainer Quick Reference Chart

Model Number	Max. GPM	Screen Surface Area	Inlet/Outlet Style	Flush Port Connection Size	Lid Type	Max Pressure Rating (PSI)
MLS-2-T316	100-GPM	122 sq. in.	2" Male NPT	1 1/2" Male NPT	Clamp	125-PSI
MLS-3-T316	200-GPM	200 sq. in.	3" Male NPT	1 1/2" Male NPT	Clamp	125-PSI
MLS-4C-T316	350-GPM	367 sq. in.	4" Flanged	1 1/2" Male NPT	Clamp	125-PSI
MLS-4B-T316	350-GPM	367 sq. in.	4" Flanged	1 1/2" Male NPT	Bolt	150-PSI
MLS-6-T316	750-GPM	745 sq. in.	6" Flanged	1 1/2" Male NPT	Bolt	150-PSI
MLS-8-T316	1,559-GPM	1,559 sq. in.	8" Flanged	1 1/2" Male NPT	Bolt	150-PSI
MLS-10-T316	2,000-GPM	2,434 sq. in.	10" Flanged	1 1/2" Male NPT	Bolt	150-PSI

The models above are Miller-Leaman's standard product line. Upon request, Miller-Leaman can design and build a SeaStrainer to meet your specifications. Miller-Leaman, Inc. products undergo constant quality control and improvement evaluations. The manufacturer reserves the right to make changes and improvements in the product without prior notice. Thompson SeaStrainer U.S. Patent #5,132,013

View Product Literature and Specifications
(owner's manuals, drawings, info sheets, video files, etc.)