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Status: In Progress
Fill Drain LNG LOX

Linear Poppet Valve - Main Valve

Design and build of a custom cryogenic main valve for LOX and LNG which is optimized for a better Cd.

2026

Project Goal

This Poppet valve is our main valve and is used primarily to allow for the turbopumps to build pressure prior to flowing through the engine. They also allow quick and reliable actuation of the prop lines so that engine chilldown can occur with valve fluttering.

Design Requirements

  • Cryogenic Compatible
  • Oxygen Compatible
    • 3/4” Line
  • Normally closed pressure assisted
  • Adjustable valve seat for tuning
  • Adjustable spring force
  • Minimal part count

Design Overview