For electric pressure washer motors up to 2 HP, this MTM Hydro 1.5 Hg Switch closes when pump vacuum begins drawing water and opens when the vacuum is broken.

For electric pressure washer motors up to 2 HP, this MTM Hydro 4.0 Hg Switch closes when pump vacuum begins drawing water and opens when the vacuum is broken.

For electric pressure washer motors up to 2 HP, this MTM Hydro 2.0 Hg Switch closes when pump vacuum begins drawing water and opens when the vacuum is broken.

For electric pressure washer motors up to 2 HP, this MTM Hydro 4.5 Hg Switch closes when pump vacuum begins drawing water and opens when the vacuum is broken.

For electric pressure washer motors up to 2 HP, this MTM Hydro 2.5 Hg Switch closes when pump vacuum begins drawing water and opens when the vacuum is broken.