This is one we get all the time.

In the days of sight-feed lubricator pumps, delivery rates were expressed in "drops/minute." But there were two types of pumps, vacuum and liquid filled, and drops in one were three times the size of the other!

So, here are the conversion values, assuming 30 or 40 weight oil at room temperature.

Keep in mind that the above are estimates since, due to surface tension, a drop of kerosene isn't as big as a drop of gear oil, and a drop of 30 weight oil at 0 degrees is larger than one at 150 degrees.

When you think about it, that's a good reason to have a positive delivery lubrication system like our Watchman Lubrication System rather than multiple pump lubricators. And you get protected delivery as a bonus!

By the way, if you still have the older style liquid filled glasses, get rid of them! They can become pressurized and explode if air is present in the glass or the lube line. Replace them with vacuum glass type pumps which present no safety risks.

Back to Top

A common issue today with pump-to-point lubricators is that they are designed to pump more oil than is really required. The OEM lubricator is often the original or exact duplicate of the one designed in 1832 when lubricating oil wasn't as efficient as oils are today. So, it is running too fast and the pump pistons have too large a displacement.

There are a few possible solutions. First, you may be able to change the gear ratio in the lubricator box, or find smaller displacement pumps. But remember, a multi-pump lubricator still cannot provide protected lubrication delivery.

Another option is to ask us to design a simple divider block system with a monitor. We'll be pleased to do so. Even better, let us quote a custom Watchman Lubrication System – it's the best way to go!

Back to Top

We encourage you to call us directly to discuss Sloan Brothers' Watchman Lubrication Systems. We'll handle the project through every stage – design, build, test, installation and on-site training for your employees.

We also have a long list of qualified distributors of Watchman Lubrication Systems. If you feel more comfortable having someone local to call when you need help with a Watchman Lubrication System or other lubrication application, we'll be pleased to arrange a get-together. The local rep will then show you the Watchman Lubrication System, explain the benefits, gather all the information required, and get it to us for an instant quote.

If you happen to be in a location where we don't have a Watchman Lubrication System distributor representative, we'll be certain to get someone there to talk to you as soon as possible.

Back to Top

At Sloan Brothers, we have been known to take a call in the morning, design the appropriate system right away, build it in the afternoon, ship it that evening, and have our technician on site to install it the next day. You can't find that kind of service anywhere else!

Back to Top

Of course! Check out our Case Studies on this website, then give us a call. Chances are there are Watchman Lubrication Systems in operation near you. We'll give you a contact name and number so you can get a firsthand report on how well our lubrication systems work.

In some cases, a longtime Watchman Lubrication System user may say something like, "I don't know much about it – I bought it 15 years ago and it just sits there and runs." But that's a pretty good report in itself!

Back to Top

Absolutely. We stock standard lubricators for air compressors and can ship the same day you call. Sloan Brothers' standard bolt OEM replacements are in stock and ready to go. If you have an obsolete model or design, we can suggest an alternative or an electric motor-driven unit to do the job.

There is never a reason for you to accept long delivery times from other companies. Sloan Brothers has what you need, when you need it.

Back to Top