Dual Channel Stainless Steel Swivels

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The second fluid channel on these swivels gives you the ability to infuse and withdraw simultaneously, to infuse on one channel while monitoring on the other, or to infuse on two lines independently. Like the stainless single channel swivels, these swivels have been built to last a lifetime (users should follow the instructions carefully when cleaning the swivels after every use).

They are available in three standard models for infusion and sampling:

  • 375/D/22 – Standard swivel for two channel access with rats.
  • 375/D/20 – Larger ID two channel swivel for blood pressure measurement or IV feeding with rats, standard infusion with rabbits or, when combined with SR750 strain-relief, larger animals.
  • 375/D/22LT – Low-torque two channel swivel for mice. Inner diameter equivalent to 25ga.

They are available in two standard models for microdialysis:

  • 375/D/22QE – Two channel swivel with quartz-lined center channel for microdialysis with freely-moving rats.
  • 375/D/22QM – Low-torque two channel swivel with quartz lining on both center and side channels. For microdialysis with freely-moving mice or rats.

Dual channel swivels can also be custom made in sizes from 16 to 28 gauge. Repair and replacement parts are available.

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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

Dual Swivel Model

375/D/20 – 20ga dual channel stainless steel swivel, 375/D/22 – 22ga dual channel stainless steel swivel, 375/D/22LT – Low-torque dual channel swivel, 22ga OD, 25ga equivalent ID, 375/D/22QE – Microdialysis swivel for rats, quartz-lined center channel, 375/D/22QM – Low-torque dual channel quartz-lined swivel


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