Marshall Excelsior 3" FNPT x 3" MNPT Back Pressure Check Valve with Bonded Soft Seat

Marsoni

M251S

$502.20

Get it in 3 business days with 1 day shipping. Friday, May 29

Marshall Excelsior 3" FNPT x 3" MNPT Back Pressure Check Valve with Bonded Soft SeatThe Marshall Excelsior ME870SBN 24 Back Pressure Check Valve is designed for high flow transport applications, ensuring reliable performance and safety. This valve features a bonded soft seat and is rated for both LP Gas and NH3. It offers a flow control of up to 449 gallons per minute (GPM) of liquid propane at a 10 PSIG pressure differential. Key Features: Inlet: 3" FNPT Outlet: 3" MNPT Flow Rate: 449 GPM (1,699 L min) for Liquid Propane at 10 PSIG

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If you have deep cracks or psoriasis on your heels, get these they are a total game changer! They hold in Vaseline and topical meds perfectly while I sleep, providing much needed relief without getting all over my sheets. My heels are healing faster and my callouses are softer and don’t split open because the moisture is trapped against the skin all night with the built in gel cushion lining instead of rubbing off. So much hydration. The fact that it is a 2 pack is perfect because while one pair is being washed and drying, you still have a set to wear. Very soft, stretchy, breathable, and easy to sleep in. I highly recommend them!

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Reviewed in the United States on January 31, 2026

Verified Purchase

James P McMahon

Port Orchard, US

★★★★★ 5

Great item!!

Color: Original Grey

These socks actually work!!! No more split skin on my heels!!

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Reviewed in the United States on May 9, 2026

Verified Purchase

Paula S

Alexandria, US

★★★★★ 3

Quality and Price

Color: Original Grey

For me a little tight on my ankles

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Reviewed in the United States on March 20, 2026

Verified Purchase

Chan.C

Omaha, US

★★★★★ 5

Soft!

Color: Peach Fuzz

These socks for dry heels are wonderful. I purchased a balm for my feet and these help it soak in over night. They have a gel liner in the heel which is soft. The first few nights I could. Feel the socks just because I wasn't used to it but after a few wears I can't tell I have them on. Love them and seem to be helping my heels.

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Reviewed in the United States on May 23, 2026