Forespar MF 839 Vented Loop - 1-1/4" - 903011

Marsoni

M251S

$34.99

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

Forespar MF 839 Vented Loop - 1-1/4" - 903011MF 839 Vented Loop 1 1 4" Installing one of our vented loops will ensure that fluids will not siphon from tank to tank. Vented loops are commonly used in the marine toilet system and engine cooling system. The simple valve system incorporated in the top of the loop allows air to enter the line when not in use, yet effectively seals as water or other fluid passes through. Molded in Marelon, neither vent nor loop will corrode. The duckbill one way valve

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My 12 yr. old Toy Poodle was already trained to a 'piddle pad' , so this system was easy to introduce. I simplly placed her piddle mat in the sturdy sided piddle box and she used it immediately. With a straight lower pad holder, she was peeing at the side and I was constantly having to clean the surrounding floor . Now, it is all contained and she is happy with her new 'piddle place'. And, I am very happy too !!

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Reviewed in the United States on June 3, 2025

Verified Purchase

Vanessa

Belleville, US

★★★★★ 5

Great!

Took my dogs a couple days to get used to using it but works well, great for apartment living !

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on February 28, 2026