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New 6-inch Diameter Rotary Valve Joins Precision Machine's PMV® Family
A customer with extensive experience using Precision’s rebuildable rotary valves had an application that called for a unit with capacity less than the PMV-8, but more than Precision’s Microvalve series. Demonstrating the flexibility of the PMV valve design and Precision’s engineering capabilities, we were able to quickly produce a PMV-6 (the number designation comes from the diameter of the rotor). The smaller valve has a capacity of 0.06 cubic feet per revolution of the rotor (CFR) compared to 0.17 CFR for the PMV-8. Precision’s engineers were able to utilize several parts common to the 8 in building the 6, saving time and money. By providing a range of valve sizes, Precision’s PMV series allows customers to select the valve that moves the right amount of material at the recommended RPM for their application. Like the PMV-8, the PMV-6 has all the innovative features of the Precision PMV modular rotary valve. “The modular PMV is a millwright’s dream,” said Lou Musgrave, General Manager. “It can be completely rebuilt on-site in under two hours, shaving days off of typical downtimes for replacement of worn cast valves. There’s no need to inventory complete backup valves. And because PMVs don’t use castings as a core, the valves can be produced and maintained to closer tolerances for better performance.” |
In This Issue of UpTimesProduct Feature - Open-Vaned Rotor Introducting Precision's Director of Sales, Steve Roberts
Precision Machine & Mfg., Inc.
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Modular Valves Keep the Powder Flowing on Marble Hill
The Marble Hill operation is an underground mine. Imerys does its own drilling and blasting at the site. Marble rock is carried out of the mine and through the use of a crusher is reduced to rock fragments uniform in size. Next, the rock is introduced into a mill and is ground into a fine powder, with grains measuring as small as 3 microns when measured cross-sectional. Finally, the powder is stored in silos awaiting shipment to customers. Obviously, in a harsh environment such as minerals processing, the performance and reliability of the equipment that produces and handles the powder is critical to Imerys’ business. The company is very selective in choosing suppliers of mechanical components which facilitate the production process. Read the full Imerys case study. |
The purest calcium
Eastern Sales Manager, Lynn Sullivan |
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PRODUCT FEATUREOpen-Vaned Rotor Option
Many of our customers have discovered the advantages of using open-vaned rotor valves. While the tight tolerances and unique design of our standard PMV® valves minimize the opportunity for material to pack between the rotor end and wear plates, the open-vaned rotor upgrade features flat wear plates and no ends on the rotor, so there is virtually no place for material to hide inside the valve. This innovative design is particularly useful with sticky or very powdery media. As with all PMV rotary valves, customers of the new open-vaned rotor valves enjoy all of the unique advantages of the Precision PMV rotary valve including parts interchangeability and on-site rebuildability. Tolerances are the tightest in the industry because there is no casting involved. Variations on the open-vaned rotor are available such as the use of Durlon 9000® tips to provide a “net fit” for added seal between rotor and barrel side. Precision has had extensive experience and excellent results with adding tips to rotor blades where customers need the added seal. We’ll be happy to provide you a special valve quote for your application. Call us. |
PRECISION VALVES AND FEEDERS
Contact Precision Machine for more information. |
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Precision's Director of Sales, Steve Roberts
Even with almost four decades of experience with heavy machinery and industrial equipment, Steve Roberts still gets excited when a prospective customer calls in with a problem. Steve is Precision Machine & Manufacturing’s Director of Sales, and the satisfaction of tackling customers’ manufacturing problems keeps him energized. He likes to delve into the details of customers’ applications and look for ways to help their plants run better and make their equipment last longer. Steve started out as a machinist apprentice in 1969 and grew in experience to where he had his own shop for five years, before joining an OEM that made presses. After enjoying the experience of participation in a company trade show exhibit, he decided to give selling a try and has never looked back. “Being a machinist myself, I can understand what customers are talking about more than others who don’t have that background,” says Steve. Read more about Steve here. |
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News & Events
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Precision Machine & Mfg. Inc.’s revolutionary modular PMV® rotary
valve family just got larger with a new, smaller valve.
Calcium carbonate is used in an incredible number of ways in our society, from filler
materials in paint, paper and plastics to use in antacid tablets and toothpaste,
and can be derived from many sources. The purest calcium carbonate, used in foods
and pharmaceuticals, often comes from crushing marble rock. The world’s leading
supplier of calcium carbonate is Imerys, headquartered in Paris, France. Imerys
mines and processes minerals of all types in locations around the world. One of
its domestic calcium carbonate operations is at Marble Hill in the mountains of
northwestern Georgia.
