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Safety Relief Valve NSN 4820-00-078-3299

Item Description

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes valve (1), relief, pressure and temperature.

NSN 4820-00-078-3299 NSN: 4820-00-078-3299

Features and Characteristics

Thread Class
3b all ends
Thread Direction
Right-hand all ends
Flow Control Device
Piston
Bonnet Type
Inside spring
Bonnet Attachment Method
Threaded
Disk Loading Method
Spring
Valve Discharge Flow Rate
25.0 gallons per minute
Renewable Seat Ring Type
Pressed-in
Maximum Operating Temp
275.0 degrees fahrenheit single response
Connection Style
Gasket sea (boss) all ends
Valve Operation Method
Automatic
Connection Type
Threaded internal boss all ends
Features Provided
Bonnet packing
Thready Qty Per Inch (tpi)
12 all ends
Adjustable Pressure Range
+140.0 to 150.0 pounds per square inch
Maximum Operating Pressure
200.0 pounds per square inch single response
Thread Size
1.500 inches all ends
Material
Steel seat
Media For Which Designed
Hydraulic fluid, petroleum base single response
Surface Treatment
Enamel
Style Designator
Straight thru
Test Data Document
80378-205-15-2070 drawing (this is the basic governing drawing, such as a contractor drawing, original equipment manufacturer drawing, etc.; excludes any specification, standard or other document that may be referenced in a basic governing drawing)
Thread Series Designator
Un all ends
FSC
4820 Nonpowered Valves
NIIN
000783299
NSN
4820000783299

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
A63256-3
Cage Code:
81982
Status:
A
MSDS:
Part Number:
215-32359-3
Cage Code:
80378
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 8481400000
  • NAICS: 332911
  • SITC: 74740
  • Description: Safety or relief valves
  • End Use (Code 21180):
    Industrial machines, other

Q & A

Frequently asked questions for NSN 4820-00-078-3299
What are the manufacturers of nsn 4820000783299?
Does this nsn 4820000783299 have a shelf life?
Yes. 48 mo. after cure date.
What is the formal definition of nsn 4820000783299
A valve designed to automatically release excessive pressures. it is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. it is not designed for regulation of continuously fluctuating loads. it may be inline or cartridge (manifold) design. excludes valve (1), relief, pressure and temperature.
Does nsn 4820000783299 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820000783299 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820000783299?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
05488
FIIG:
A046B0
App. Key:
AP
Cond. Code:
1
Status:
A

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