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NSN 4820-01-556-0495

Air Pressure Relief Valve

About this product

Includes vent valve (2750088-103), o-ring (ms29513-230 and ms29513-150), six washers (nas1149d0516j), six bolts (an5-4a), fitting (hm020-103-3), nut (hm022-23), adapter (hm020-150); used on internal auxiliary fuel transfer system (iafts) for 1520-01-035-0266 and 1520-01-298-4532.

Manufacturer part number HM020-117-21 for national stock number 4820015560495.

Datasheet

  • Product description

    Vent Valve NSN 4820-01-556-0495.

  • MPN or Model

    HM020-117-21

  • Schedule B
    8481.80.9050 (Other taps, cocks, valves, etc., nesoi)
  • NMF (National Motor Freight)
    011790 - Aircraft Parts NOI
  • End Application
    Uh-60 blackhawk helicopter
  • Part Name Assigned By Controlling Agency
    Valve assembly, vent
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Vent Valve

A valve designed to relieve internal pressure from gear housings, automotive axles, differentials, transmissions and the like. May or may not be threaded on one end. For items with relief pressure ratings see valve (1), safety relief.

Mechanic Bill explains Air Pressure Relief Valve

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NSN 4820015560495

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HM020-117-21 Robertson Fuel Systems, L.l.c.
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