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NSN 4820-00-391-9356

Y Valve

About this product

3/4 inch flanged nipple in bonnet.

Manufacturer part number 20721 for national stock number 4820003919356.

Datasheet

  • Product description

    Y Valve NSN 4820-00-391-9356.

  • MPN or Model

    20721

  • Schedule B
    8481.80.9050 (Other taps, cocks, valves, etc., nesoi)
  • NMF (National Motor Freight)
    127220 - Pressure Reg/red/relief Valves NOI
  • Flow Control Device
    Disk
  • Bonnet Type
    Outside screw-yoke
  • Bonnet Attachment Method
    Threaded
  • Bolt Hole Quantity
    8 1st end
  • Valve Operation Method
    Manual
  • Flange Shape
    Round with holes 1st end
  • Connection Type
    Flange 1st end
  • Outside Diameter
    8.250 inches 1st end
  • Face To Face Distance
    14.000 inches
  • Thickness
    2.000 inches 1st end
  • Bolt Hole Diameter
    0.812 inches 1st end
  • Bolt Circle Diameter
    6.625 inches 1st end
  • Flange Face Design
    Raised straight 1st end
  • Raised Face Height
    0.125 inches 1st end
  • Material
    Steel body
  • Style Designator
    Straight through y-pattern
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Y Valve

A valve with one inlet and one outlet connection that provides unobstructed fluid flow. The flow is controlled by the action of a stem which lifts disk perpendicularly off center axis of its seat. The stem is at angle of less than 90 degrees (1.5708 radians) to parallel inlet and outlet flow. It may utilize a diaphragm as packing. Excludes valve, stop-check.

Mechanic Bill explains Y Valve

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NSN 4820003919356

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
20721 Crane Co
DD445S4810-243 Naval Ship Systems Command
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