Spiral Ring Retains Component in Butterfly Valve

Spiral Rings in bulk

A butterfly valve is a valve that regulates flow. The “butterfly” is a disc mounted on a rod or stem that can be turned perpendicular to allow full flow, parallel, to stop flow or increments, to allow a certain amount of flow. This butterfly valve is regulating gas or oil and features a spiral-retaining ring designed to take up the load of the thrust washer.



 A spiral-retaining ring is a good choice for this application. It can be custom designed to the fit the requirements of the application without the need for special. It also reduces the changeover time for the machines necessary to produce these parts, cutting down on manufacturing timetables and, ultimately, reducing lead times and costs.  


Other advantages to using spiral retaining rings include:


  • Rings are made with rolled flat write that feature edges with a radius so there is no damage to the groove or surrounding material.

  • Spiral rings can be made from a variety of materials including carbon steel, stainless steel and beryllium copper.

  • Rings can be produced economically in low quantities since tooling requirements are minimal.

  • The manufacturing process results in very little material waste, reducing overall costs.

  • Rings are coiled and not stamped, eliminating stamping burs which can cause damage in certain applications.

  • Rings can be easily applied or removed in the field without special tooling.

Multi-turn, spiral-wound retaining rings consist of two or more turns of in-house rolled flat wire material with rounded edges. The material is coiled on edge to provide a gapless ring with 360 degree of retention. Spiral rings offer space savings in a radial direction since there are no assembly lugs as with tapered rings.

(Note: selection of a retaining ring-tapered, constant section or spiral depends upon the specific parameters of an application). 


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