Turn off water at the house, unhook hoses and take valves off. Maybe God is showing you in advance that these things are broken, and if your water hoses burst in the dead of night you will not be able to turn them off. Stuck open valve is a good problem to discover in cool blood while the sun is up. You can take them off and mess with them until the valve works again, and then remember to work them periodically so they dont get stuck. Which I am going to go do right now; thank you. Or an opportunity to buy new ones that work as they should.

How can I shut off these water valves that won’t turn? They connect to my washer, which I am trying to fix. I have sprayed the valves with WD-40 and partially unscrewed the screws, but that has not helped, so I’d welcome any ideas.

HF scientific, are committed to improving the quality of the world’s water supply through innovative design, manufacture, and distribution of the highest quality laboratory, field, and online products for the marine and shipping industry. Their rugged, dependable, and easy-to use instrumentation provides accurate measurement of the total residual oxidant (TRO) of ballast water, desalination, or wastewater treatment equipment onboard. For 30+ years HF scientific has used its expertise to develop specialized devices for measuring and assessing water quality, including equipment for monitoring parameters such as free and total chlorine, turbidity, streaming current, and UV% transmission.

HF scientific is environmentally inclined in their development and manufacturing process. They produce instrumentation, test kits and chemical reagents used for monitoring water quality in a variety of applications including Industrial and Municipal water treatment as well as marine Ballast Water Treatment Systems that help eliminate the damaging effects of invasive species in the environment. In fact the vast majority of Ballast Water Treatment Systems are equipped with TRO sensors manufactured by HF scientific.

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As with all water shut-off valves, it's worth closing/opening them at least once a year. Nothing worse than having a leak and finding the main inlet valve (if you actually know where it is..!) is solid - and wide open.

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I would take the plastic handles off, then on many makes of valve the casting makes it obvious which way they should turn.

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Ballast water is essential for safe & efficient shipping operations and stabilizing steel-hulled vessels at sea. Ballast water provides a variety of critical functions, such as maintaining balance, stability, and structural integrity on non-cargo voyages or when cargo is unloaded. While the benefits of ballast water are numerous, it can also post serious ecological, economic, and health problems when marine species carried in a ships’ ballast water are transported to a new location. Bacteria, microbes, small invertebrates, eggs, cysts, and larvae of various species can be transferred from their native environment to a new geographic area. Once there they can reproduce and become invasive, out-compete native species, and multiply into pest proportions. The effects can be devastating, and data shows that bio-invasions are both on the rise and continue to impact new locations. GESAMP BWWG (Joint Group of Experts on the Scientific Aspects of Marine Environmental Protection-Ballast Water Working Group) recommends the DPD colorimetric measurement as the preferred method for TRO.

Always worked for the ones we had on our systems and we fitted lots of extra valves to be able to isolate sections as needed - they are cheap compared to the time draining and refilling...

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HF scientific is an active participant in national and international organizations involved with the development of standards for our industry. With an experienced design team and a worldwide network of sales representatives, HF scientific is on course with meeting anticipated product demands as our world moves into the third millennium. They are members in good standing with the American Water Works Association, Water Environment Federation and National Rural Water Association.

Leverage. You could use a pliers or vice grips to give you a longer lever arm. But you have been working out a lot during Covid and you might be strong. Be careful not to crack the handle.

Those levers are probably plastic, so to eliminate the problem when they break, remove the screws, and there will be a spigot of some shape that they were attached to. A well fitting wrench, Mole or suchlike, or a socket from a socket set, maybe, will give better leverage. Rotate a few degrees at a time, if possible. If still not, then warm up the brass with a heatgun or hairdrier and try again. WD40 probably didn't penetrate but may well do when the levers are off. Bear in mind they will only go 90 degrees - in ONE direction.

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