It may look like USA manufacturing is indeed going off-shore, but we still have a lot of it here. "Built in the U.S.A." is still good thing to believe in.
Now a lot of people may believe that you can make more money with the click of a mouse, but it is in the making of products that creates the jobs and payrolls that help our families and our country
We recently finished and posted a short video that shows the skilled people in our facility making our "Survivor"TM brand of vacuum pumps. We have shown with field experience of over 350,000 hours they can last longer, require less maintenance, and pay back the initial investment many more times than cheaper alternatives.
At MHV we believe in doing the best possible job for our customers. Quality comes first and last with us. We've grown our inventory of parts that we manufacture so customers don't have to stand in the back of a line or wait for the next boat shipment to arrive. That's what our online "Parts Express" was built for. We've even reverse-engineered components no longer being made to keep customers running.
Here are some comments on "Made in the USA" from Ryan DeArment of Channellock Inc., a family owned manufacturer of excellent tools:
"Channellock TM started out as a small operation making hand-forged horseshoe and blacksmith
tools. George B. DeArment founded it back in 1886. We believe that American manufacturing is
the backbone of the U.S. economy. The best designed and crafted products in the world, like
Channellock TM pliers, come from the United States. American manufacturing employs workers and
supports families. Our founder believed that: "Dedication to excellence is the surest way to surmount
adversity and to prosper." We still do."
So whether it's replacement parts, or rebuilding your old pumps, MHV is dedicated to being your partner for the long haul. You can call for answers and speak to a helpful technical person locally, rather than in an overseas time zone. Isn't that much better?
We'll be at the Heat Treating and Gear Technology Meeting in Indianapolis in September. So come by and say hello.
The vacuum business is thriving here, and we want to help you. So e-mail me with your vacuum questions and we'll answer them: email@example.com
Isolate the Pumps
The next step is to blank off the blower inlet and verify a vacuum level below 10 millitorr (blower running)test point B. Note that with the blower at rest and the mechanical pump running, you will normally see 500-1000 millitorr at the inlet since you are pumping dirty roughing piping with high outgas loads through the low conductance internal clearances of the blower at rest.
If the blank off is done by closing the roughing valve, you might have high blower inlet vacuum due to a seat leak on the roughing valve. To verify, helium needs to be sprayed into the valve seat/disc area but in most cases this cannot be done due to piping placement, etc. The fix is to drill a hole in the roughing piping near the roughing valve and TIG weld in an ‚ÄúO‚Äù ring sealed test port. (We make a mild steel port with an SAE ‚ÄúO‚Äù ring sealed plug for this purpose). This allows easy helium access to the valve seat (with the rough valve closed), and a leak tight seal with the piping under operating conditions.