Rotary airlock valve, Semco, model number RV-04 CI, carbon steel, 10" diameter rotary airlock, 8" diameter 10" x 10" flanged in/out with small stainless steel chute on one side, reducing to 8" diameter. Driven by small fractional motor through gearbox and chain & sprocket assembly. Shop Order number 008205, PO number 001562, new 1992. Last used at food processing facility.
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