We offer valve ball repair as well as spherical grinding services. If you are looking for any of these services contact us. Complete reconditioning of valves and components meets or exceeds OEM specifications.
Our Component Mating System (CMS) Program provides matched valve seat and valve ball sets to ensure maximum valve performance for our customers.
At DK Machine we have broken the complex process or grinding and finishing spherical parts down into its simplest parts. For each part of this process, we have developed time tested and proven procedures and equipment that allow us to manufacture these parts quickly and efficiently, that most machining or grinding shops will not touch due to the high precision required. We began down this road in 1985 to fill a local need in the rebuilding of balls and seats for the large ball valves that are used in the local Pulp & Paper industry, but we quickly learned that there was a much wider need for our services. To this day we continue to find new industries that benefit from precision grinding of spherical surfaces:
At DK Machine we understand that the budget and/or the schedule sometimes will not allow for manufacture of brand-new components. We have developed a great working relationship with a local shop that can provide a variety of spray welding techniques and materials to build your worn parts back up so that we can provide exceptional quality refurbished parts for any industry. We can make your old spherical bearings or ball valve components like new again and often times by including hard facing technologies we can ship them back to you better than they ever were so that you can forget about that next scheduled teardown.
We commonly work with all the tough materials that many shops won’t touch; Inconel®, Hasteloy®, Stellite®, Monel®, Titanium, Zirconium, Waspaloy® and many others are just everyday occurrences here. We have the tooling and programming expertise to make machining these tough alloys a walk in the park. Along with these difficult to machine alloys, we also work with some of the toughest coatings and surface finishes in the industry. While we do not do any coatings or plating’s in-house, we have developed solid relationships with trusted and approved suppliers for any type of severe service coatings, platings, and other surface treatments. We are very familiar with High Velocity Oxy Fuel (HVOF) applied coatings like Chrome Carbide, Tungsten Carbide and many others. We commonly finish spray & fuse and laser clad coatings of many materials as well as more traditional chrome plating, Teflon® coatings or any number of PVD, CVD diamond-like coatings or other vapor deposited hardness or lubricity enhancing coatings. Similarly, we do not perform heat treating or non-destructive testing here but rather leave that to the experts who specialize in only that. This philosophy allows us to focus our efforts on what’s most important to you; high precision machining and grinding of your valve balls and seats or other components for the gas & oil industry.
Many years ago, we developed strict procedures to adhere to the US Navy regulations and requirements for quality assurance and part traceability. These procedures are so efficient and foster such an environment of quality that we decided to implement them across all jobs that pass thru the shop so that all our customers can reap the benefits of assured quality that they provide. Written procedures for everything process in the shop ensure you will benefit from our systems designed to satisfy the requirements of the US Navy including MIL I45208A. All our quality systems are audited regularly by our own employees and regularly scheduled external audits by the Navy and their sub-tier suppliers. These audits ensure that we are consistently exceeding quality standards. We also maintain tight working relationships with inspectors from sub-tier suppliers who are in our shop regularly to perform in process and final inspections. This allows us to stay up to the minute on any changes required in our quality assurance program.
DK Machine has developed a series of equipment to perform fully automated and semi-automated grinding and lapping of spherical parts. This highly specialized equipment allows us to provide that perfect seal or bearing surface much faster and more consistently than our competitors. Our unique lapping equipment eliminates part distortion and heat which provides your parts with a rock-solid sealing or bearing surface that is dimensionally stable and assured to provide a long service life. We can provide a top-quality seal or bearing surface to your specifications weather you need one piece or a thousand.