Interpump K1 Unloader Valve

Marsoni

M251S

$95.60

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

Interpump K1 Unloader Valve250 Bar max pressure* 9 41 Lpm flow 60C max water temperature Flow sensitive valve Brass & st. steel construction 3 8"BSPF inlet 1 2"BSPM outlet 1 2"BSPM bypass 1 4"BSPF gauge ports *40 Bar recommended minimum working pressure

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The ball bearings make them roll smooth. I've put plenty of pressure through them and no bending or breaking. The middle sized unit is probably the most useful. The small one has it's uses but can act like a pizza cutter and easily go through sound deadening mats. The large one has a little too much surface area to get a good crush on the mats.

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Reviewed in the United States on August 31, 2025

Verified Purchase

Calvin Stafford

Waukegan, US

★★★★★ 5

Works great, good price

Makes installing sound deadening panels a breeze. A little elbow grease required but makes for perfect contact with the sheet metal and butyl.

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Reviewed in the United States on April 19, 2026

Verified Purchase

Jare

Houston, US

★★★★★ 5

Well Made Tools!

I have been installing Kilmat in my early 74 Datsun 260Z restoration and these tools are very nice for the price. I like them because they actually have ball bearings and move smoothly over the matting. The size selection is very handy as well and even has some nice finished wooden handles.

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Reviewed in the United States on May 9, 2026

Verified Purchase

Placeholder

Massapequa, US

★★★★★ 5

Perfect applicators tool

Tool worked great. Bonds sound proofing to metal perfectly.

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Reviewed in the United States on April 9, 2026