Capabilities

Quality, Delivery, Cost & Precision

Trotter Manufacturing, Inc. has manufactured valve spools since 1985 and is particularly experienced in machining tight tolerances in diameter and cylindricity. TMI routinely and consistently holds ± 0.00006″–0.00008″, putting us in an elite class. Our ability to provide rapid prototypes and sustained delivery performance make us reliable for your product needs. And our continuous improvement culture allows you to remain competitive in your marketplace.

In-house Capabilities:

  • Turning – OD/ID
  • Drilling – tapping
  • Boring
  • Honing (id) – Tilt Spool
  • Gun drill – deep hole drilling
  • Tang – clevis
  • Notching (types)
    • Straight
    • Angle
    • Key-seat
    • Bath tub
    • Nick notch
    • Post hole
    • Coin notch
    • Etch
  • Cross drilling
  • Angle drilling
  • OD polishing
  • Rough grind
  • Finish grind
  • Undercut grind
  • Plate thickness
  • In-house gaging
  • SPAP
  • CPK
  • GRR