Trident Marine 730-2120 Stainless Steel Constant Torque Hose Clamp, 5/8-Inch Band

Stainless Steel Constant Torque Clamp 5/8 Band, Hose I.D. - 2-3/8 to 3, Hose O.D. - 2.75 to 3.625

Virtually all rubber hose compresses (cold flow) after installation of clamping device, resulting in an almost immediate torque loss that can exceed 80% of installation torque. Similarly, virtually all metal connections expand as a system heats up, and then contracts as the system cools. Conventional worm gear, T-bolt, and other clamps are passive, in that expansion or contraction of components cannot be compensated for with out re-tightening or loosening the clamps. This clamping system is an active clamping mechanism, which monitors and then compensates for the changes by actually changing diameter through a unique worm gear Belleville assembly.

Specifications:

• Hose I.D. - 2-3/8 to 3, Hose O.D. - 2.75 to 3.625
• Recommend max. torque - smaller id. sizes up to 730-3000 - 30 to 70 in.-lbs, larger id. sizes above 730-3000 - 50 to 120 in.-lbs

Construction:

• Band Housing: 304 Stainless Steel 5/8 Wide Band
• Bellville Spring Washers Screw: 401 Stainless Steel

Trident Marine 730-2120 Stainless Steel Constant Torque Hose Clamp is designed for reliable, long-term clamping performance in marine, automotive, industrial, and other demanding hose applications. The clamp uses a 5/8-inch-wide stainless steel band and an active clamping mechanism that helps maintain consistent pressure as hose materials and connected components change during operation.

Most rubber hose materials experience cold flow after installation, which can cause significant loss of the original tightening torque. Metal connections may also expand as temperatures rise and contract as they cool. Unlike conventional worm gear, T-bolt, and other passive clamps, this constant torque design helps compensate for these changes without requiring repeated manual adjustment. Its unique worm gear and Belleville spring assembly automatically responds to changes in the clamping system by adjusting the clamp diameter.

The 730-2120 clamp is intended for hose applications with an inside diameter range of 2-3/8 to 3 inches and an outside diameter range of 2.75 to 3.625 inches. Recommended maximum installation torque varies by clamp size, with smaller sizes up to 730-3000 rated from 30 to 70 inch-pounds and larger sizes above 730-3000 rated from 50 to 120 inch-pounds. The stainless steel construction provides dependable corrosion resistance and durability for demanding environments.

Features:

• Constant Torque Design: Actively compensates for hose cold flow and thermal expansion or contraction to help maintain consistent clamping pressure.

• Active Clamping Mechanism: Uses a worm gear and Belleville spring assembly to adjust clamp diameter as system conditions change.

• Hose Compatibility: Designed for hoses with an inside diameter range of 2-3/8 to 3 inches and an outside diameter range of 2.75 to 3.625 inches.

• Stainless Steel Construction: Includes a 5/8-inch-wide 304 stainless steel band and housing for corrosion resistance and durable service.

• Spring and Screw Material: Belleville spring washers and screw are made from 401 stainless steel.

• Torque Guidance: Recommended maximum torque ranges from 30 to 70 inch-pounds for smaller sizes and 50 to 120 inch-pounds for larger sizes.