NSN 4820-01-088-7460

Datasheet

• Product description
  

  Safety Relief Valve NSN 4820-01-088-7460.

• MPN or Model
  

  20039H91SS

• Schedule B
  8481.40.0000 (Safety or relief valves)
• NMF (National Motor Freight)
  127220 - Pressure Reg/red/relief Valves NOI
• Unit Weight (Est.)
  15 lb
• Flow Control Device
  Disk
• Disk Loading Method
  Spring
• Bolt Hole Quantity
  4 all ends
• Valve Operation Method
  Automatic
• Flange Shape
  Round with holes all ends
• Connection Type
  Flange all ends
• Features Provided
  Pressure tight outlet side
• Valve Size
  0.500 inches
• Maximum Operating Pressure
  275.0 pounds per square inch single response
• Opening Pressure Setting
  111.0 pounds per square inch
• Outside Diameter
  3.500 inches all ends
• Thickness
  0.438 inches all ends
• First Connection Face To Centerline Distance
  3.250 inches
• Bolt Hole Diameter
  0.500 inches all ends
• Second Connection Face To Centerline Distance
  3.250 inches
• Bolt Circle Diameter
  2.375 inches all ends
• Flange Face Design
  Raised with curve and radius all ends
• Raised Face Height
  0.062 inches all ends
• Raised Face Diameter
  1.375 inches all ends
• Material
  Steel flow control device
• Material Specification
  Qq-s-763, class 303 federal specification single material response seat
• Media For Which Designed
  Steam single response
• Style Designator
  Err-090
• Test Data Document
  81349-mil-s-901 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).