★★★★★ 5
Boating maintenance
Perfect replacement parts for your scheduled maintenance, great price
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Reviewed in the United States on December 25, 2025
Marshall Excelsior Liquid Level Vent Valve 3/4" MNPT Inlet with Two 1/4" FNPT Side Outlets
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Marshall Excelsior Liquid Level Vent Valve 3/4" MNPT Inlet with Two 1/4" FNPT Side OutletsThe Marshall Excelsior Liquid Level Vent Valve (Part Number: MEJ415) is engineered for superior performance in LP Gas and NH3 applications. This robust valve features a durable steel construction with a 3 4" MNPT inlet and two 1 4" FNPT side outlets, ensuring reliable operation in demanding environments. Key Features: Material: Steel Container Connection: 3 4" MNPT Service Connections: Two 1 4" FNPT side outlets Dip Tube Connection: 1 4" FNPT Orifice
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Your Marshall Excelsior Liquid Level Vent Valve 3/4" MNPT Inlet with Two 1/4" FNPT Side Outlets orders ship within 1-2 business days.
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- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.4 ★★★★★
Based on 300 reviews
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Product Reviews
★★★★★ 5
worked great at fair price
works fine on my 1994 volvo penta 3.0 GL the main gasket was wrong, but my 3.0 GL does not have a gasket, the other parts appear to be universal
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Reviewed in the United States on June 5, 2025
★★★★★ 4
Good fit
Worked well with no problems.
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Reviewed in the United States on February 24, 2026
★★★★★ 5
Great replacement kit
Called around for quotes to get them replaced and everyone was quoting over $2k just for bellows. Figured I’d give it a try. The rubber is good quality and feels soft. Time will tell but this is an easy job if you’re mechanically inclined. Make sure you replace the plastic water pickup fitting while you’re at it. Found mine to be cracked on disassembly and had to wait for a new one. Should be a easy 3-4 hour job if your not doing the bearing and only doing bellows
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Reviewed in the United States on August 26, 2024
★★★★★ 3
Just ok
Qualities OK, but for Marine applications might want better
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Reviewed in the United States on August 3, 2025
