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

Marsoni M251S
Sale price$502.20
Pay 4 payments of $125.55 a month.Shop Pay
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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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.3 ★★★★★
Based on 1526 reviews
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Karl Largie
Boise, US
★★★★★ 5
Useful
Very secure attachment
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Reviewed in the United States on April 8, 2026
A
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Amazon Customer
Belleville, US
★★★★★ 4
Good
Good
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Reviewed in the United States on March 22, 2026
A
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Amazon Customer
Dallas, US
★★★★★ 5
Hubby was happy
My husband was happy with these. He didn’t complain so gold star.
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Reviewed in the United States on March 29, 2026
B
Verified Purchase
Bobby willis
Belleville, US
★★★★★ 5
If you need them,good place to order them
Great but was 2 days late weather. Was bad,in lot of places,
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Reviewed in the United States on March 14, 2026
S
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Sharon Haman
Houston, US
★★★★★ 5
Great quality
Product exactly as described and worked perfectly for my 2008 Honda accord
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Reviewed in the United States on September 9, 2025

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