Second-stage intake and exhaust valve plate

Main functions

Controls unidirectional suction & discharge for second‑stage cylinder. On piston down‑stroke, intake valve plate opens and hydrogen enters second‑stage cylinder. In compression stroke intake valve closes; on piston up‑stroke exhaust valve plate opens and compressed high‑pressure hydrogen is discharged. When closed, it blocks high‑pressure‑hydrogen reverse‑flow, ensures second‑stage compression pressure and gas‑delivery capacity, and withstands alternating impact loads of high‑pressure hydrogen.

Structural materials

‑ Thin‑section annular geometry.

‑ For high‑pressure hydrogen service: high‑strength hydrogen‑embrittlement‑ & fatigue‑resistant alloy material; good impact‑resistance and corrosion‑resistance.

‑ Matches with valve seat and springs to constitute complete second‑stage compressor‑valve assembly.

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