TRD Manufacturing combines twenty-seven years of precision machining and engineering with an unmatched selection of options and modifications to deliver the highest quality customizable NFPA cylinders on the market. At TRD Manufacturing, your specials are our specialty.

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Back to Back Cylinders

Back-to-Back cylinders allow the creation of a true four position cylinder by combining two individual cylinders with common bore sizes together as one unit with common tie rods.
  • Combine any two series together for limitless design possibilities.
  • Different stroke lengths can be provided for endless stroke position possibilities.
  • “Hard” stops are provided with all four positions.
  • Back-to-back cylinders are built with standard parts, reducing overall costs.
  • Spacer plates (SP option) can be added between cylinders to allow for room for larger cap port air fittings.
  • Permanent lubrication design provides outstanding service life. Click here to learn more!


Basic back-to-back used as a 4-position cylinder