Float Balls with Through-Tube & Rod Fittings

Through-tube float balls include a tube running through the float body so a stainless steel rod can pass through or attach to the float assembly. They are commonly used in level measurement systems, float valves, sump pumps, and other liquid-control equipment where the float must travel along or connect to a rod while maintaining buoyancy and corrosion resistance.

Common through-tube options include 5-inch floats for 3/8-inch rod; 6-inch floats for 3/8, 1/2, and 5/8-inch rod; 8-inch floats for 1/2, 5/8, and 3/4-inch rod; plus select 9, 10, and 12-inch options. Stainless Steel Float Ball Company can also customize sizes and fittings for specific system requirements.

Yes. Stainless Steel Float Ball Company stocks several threaded and through-tube configurations and can tap custom thread specifications when needed. Common options include 1/4-20, 3/8-16, 1/4 NPT, 3/8 NPT, 1/2 NPT, 5/8-11 UNC, and 3/4 NPT, depending on float diameter and application requirements.

Most float balls are made from stainless steel, commonly 304 stainless steel, with 316 stainless steel and other materials available when required. Stainless construction provides durability, corrosion resistance, and versatility for liquid-based systems, vacuum tanks, sump pumps, steam traps, measurement devices, and demanding industrial environments.

Available finishes include matte, brushed, and fully polished. Matte is the regular unfinished stainless steel appearance with a visible weld ring. Brushed finish smooths the weld seam but is not a full mirror finish. Fully polished float balls provide a mirror-like appearance, often preferred for visible applications such as flag pole balls or design projects.

Yes. The company has equipment to pressure test floats and can test to customer specifications when higher-than-normal pressure requirements apply. Pressure testing is especially useful for demanding systems where reliability, seal performance, and buoyancy must be confirmed before the float is integrated into production equipment.

Magnets can be sourced and assembled inside float balls when an application requires magnetic response or precise level detection. This is useful in more complex measurement systems and high-performance float assemblies where internal magnetic components help communicate float position to external sensors or control devices.

Stainless Steel Float Ball Company maintains a large inventory of common sizes and can ship directly to customers worldwide. For repeat or high-volume needs, tailored supply programs can be developed to help reduce inventory costs, lower freight costs, and maintain a consistent supply aligned with your production objectives.