Solon Belleville Flange Washers

Belleville Flange Washer Features

Maintains Bolt Integrity

These springs are engineered to fit into flange designs, and the loads are typically higher than standard Belleville washers. Our stainless steel flange washers don’t fatigue under normal operating conditions.

Corrosion Resistant

Designed and manufactured by Solon Manufacturing Co., Solon Flange Washers eliminate the effects of differential thermal expansion and can withstand demanding environments and repetitive use in high-pressure conditions.

Tighter Seals For Reduced Fugitive Emissions

Our ISO 9001:2015-certified washers are designed to maintain tight, leak-free joints, increase the elasticity of the bolting system and reduce fugitive emissions in mission-critical applications.

Save Time & Costs

Once installed, these washers don’t have to be retorqued, saving the operator time on maintenance. Solon’s flange washers increase the elasticity of a bolting system by a factor of 7 to 15 times, making them an economical alternative to costly system enhancements.

Flange Washer Industries & Application

View our Flange Washer Industries Served & Applications by category below or Contact a Solon expert and let us find the right flange washers to meet your application needs.

Additional Solon Flange Washer Resources & Services

Our interactive Calculator tool quickly and accurately assists with the design of the flange washer system based on inputs relative to flange size, environment and bolting information under normal assembly conditions. Visit our technical resource library and take the guesswork out of your product search with our comprehensive tools guides and data sheets. Additionally our Flange Washer Case Study Guide illustrates uses for flange washers in LNG Applications, Heat Exchangers and Nuclear Power Station Heat Exchangers.

Contact Solon For Belleville Flange Washers

We can fill flange washer orders of all sizes. Contact us and let us get started on your next project!

 

FAQs about Flange Washers

View the full list of the Frequently Asked Questions in our resource library.

Are Solon Flange Washers corrosion-resistant?
Solon Flange Washers are heat treated using a recipe that achieves RH1065 condition while imposing an additional layer of protection from the elements, and undergoes a cryogenic sub-zero transformation and aging treatment.

Can you stack Solon Flange Washers on one side of the flange?
There are some cases where flange springs must be stacked on one side of the flange. This might be because a tensioner is being used to load the studs. It also may be difficult to access one side of the flange. In addition, there are some applications where the flange is not bolted through, such as a valve bonnet or if one of the flanges is tapped. In these cases, if the recommendation is to use two springs (or parallel spring sets) in series (Optimizing Belleville Washer Stacks for Maximum Performance), we recommend that it is verified that the clearance hole in the flange is less than or equal to the clearance hole of the flange washer.

If the clearance hole is larger, then the convex side of the washer nearest the flange could "extend" into the hold of the flange and alter the loading charactertistics. Since the clearance holes in standard flanges is almost always larger than the clearance ID of the Solon Flange Washers, we would minimally recommend that a flat washer with an ID equal to the ID of the Solon spring be used. The flat washer should be a hardened washer to prevent embedment. Another option would be to use a thrid flange washer (or parallel washer set) on this side of the flange. Using an odd number of springs  in series will ensure that the convex side of the first spring can contact the flange. The added spring will always provide additional elasticity so joint performance will be improved over two springs. 

Do I install my washers on the nut or bolt head side?
Installing Solon Belleville of Flange Washers on the nut or bolt head side does not make a difference from a performance standpoint. Solon recommends that the user install them on the side that is most convenient to access. If this is equal, then we would opt to install them on the opposite side from the element that will rotate during install to reduce rotational galling on the spring, as described in Solon Flange Washers. In other words, if the user plans to turn the nut during install, we would install them on the bolt head side and vice-versa.