What We Offer
Diamond Gear specializes in customizing high-quality gearboxes to perfectly fit your valve specifications. We machine blank gearboxes in our Houston, TX, facility, accommodating a variety of bolt patterns & stem sizes. This in-house capability allows us to provide rapid customization and fast shipping, helping you reduce project downtime and meet demanding deadlines.


Precision Machining From Stock Blanks
Thanks to our extensive inventory, we can deliver customized gearboxes with exceptional speed. We maintain a large stock of gear blanks that are ready for machining on demand. This allows us to modify gearboxes precisely to suit specific bolt patterns, stem dimensions, and mounting requirements. The result: significantly faster delivery times than our competitors.
Torque and Stem Support
Diamond Gear is more than just a supplier; we’re a technical partner. Our team provides expert guidance on torque sizing and stem engagement to ensure you get the perfect product for your application. Our engineers are ready to help you make the right choices for your project.

Custom Paint Options
For projects with special environmental or aesthetic requirements, we offer custom paint options. With our in-house paint booth, we can apply a range of protective finishes and custom colors. This option is available for special projects that require specific finishes for branding or enhanced corrosion protection.

Why Choose Our Services?
With Diamond Gear, you get:
Quick turnaround times
Our large inventory and in-house machining mean we can ship your custom order fast.
Machining flexibility
We can machine gearboxes to fit a wide range of valve specifications.
Technical expertise
Get reliable support for sizing, mounting, and application challenges.
Consistent quality
We deliver high-quality, durable gearboxes that you can depend on.
Want to Know How Our Expertise Can Support Your Project?

Resources and Tools
We have a range of technical assets you can explore. Our RIM pull calculator helps you determine the correct specifications for a gear operator’s handwheel, and we have catalogs, manuals, conversion formulas, and a blog.
Request Service Support
Ready to get started? Request a quote or contact us, and we’ll get to work helping you with your next project.