Single Channel Stainless Steel Fluid Swivels

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All Instech’s single channel stainless steel models are fully autoclavable and may be reused hundreds of times.

Each swivel includes a universal swivel-to-tether clamp that connects to all of Instech’s button, harness, and head block tethers. They are available in the following standard sizes:

  • 375/25 – Low-torque swivel for infusion of mice. Mates with BTCOEX-25 (PE/PVC), VAHBPU-T25 (PU) and BTPE-25 (PE) external tubing and 2Fr catheters.
  • 375/22 – Standard single channel swivel for infusion of rats and similar-sized rodents. Mates with BTCOEX-T22 (PE/PVC), VAHBPU-T22 (PU) and PE-50 external tubing and 3Fr catheters.
  • 375/20 – Larger ID swivel for blood pressure measurement or IV feeding with rats, standard infusion with rabbits. Mates with PE-60 tubing.
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Fluid Swivels for Continuous Animal Infusion

The swivel, a device that rotates to keep the catheter from tangling, is a critical part of any continuous animal infusion system. The Instech fluid swivel has been in laboratory use for over 40 years and has earned a reputation as the finest in the industry.

Instech swivels are manufactured with precision to ensure ease of rotation, durability and reliability. The design minimizes internal dead volume and eliminates stagnant regions along the fluid path. Fluids passing through the swivel touch only stainless steel hypodermic tubing and Teflon. Self-adjusting seals, at the heart of every Instech swivel, actually improve with use.

Swivels are available in a variety of sizes for use with a range of species — rodents to large animals. They work with Instech’s harness, button and head block tethers. For optimal performance they should be mounted above the animal’s cage with one of Instech’s swivel/cage mounts, ideally counter-balanced to remove slack in the tether. Swivels are also available as part of pre-assembled infusion kits.


Frictional Torque by Model

Swivel torque

All models are appropriate for rats.

Additional information

Single Swivel Model

375/20 – 20ga single channel stainless steel swivel, 375/22 – 22ga single channel stainless steel swivel, 375/25 – 25ga single channel stainless steel swivel


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