ORDER BY PHONE (619) 331-9599      Contact Us      Request Quote
facebook
NationalStockNumber.org

Safety Relief Valve NSN 4820-00-412-4291

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 4820-00-412-4291 NSN: 4820-00-412-4291

Features and Characteristics

Thread Class
3a 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Bonnet Type
Inside spring
Bonnet Attachment Method
Integral
Disk Loading Method
Spring
Maximum Operating Temp
400.0 degrees fahrenheit single response
Minimum Operating Temp
-100.0 degrees fahrenheit
Connection Style
Flared (tube) all ends
Valve Operation Method
Automatic
Connection Type
Threaded external tube all ends
Features Provided
Pressure tight outlet side
Thready Qty Per Inch (tpi)
20 1st end
Adjustable Pressure Range
+60.0/+150.0 pounds per square inch
Maximum Operating Pressure
200.0 pounds per square inch single response
Thread Size
0.437 inches 1st end
Seat Angle
37.0 degrees all ends
Opening Pressure Setting
125.0 pounds per square inch
Outside Diameter Tube Accommodated
0.250 inches 1st end
Material
Plastic polytetrafluoroethylene seat
Media For Which Designed
Water-oil-gas single response
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-86251 military specification single treatment response
Style Designator
Straight through w/baffle
Thread Series Designator
Unjf all ends
Furnished Items And Quantity
1 deflector cap
FSC
4820 Nonpowered Valves
NIIN
004124291
NSN
4820004124291

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
D520A4D125
Cage Code:
91816
Status:
A
MSDS:
Part Number:
GV500KF4D125D
Cage Code:
26512
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 4820-00-412-4291
What are the manufacturers of nsn 4820004124291?
Does this nsn 4820004124291 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820004124291
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 4820004124291 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820004124291 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820004124291?
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

What do you get when you order from nationalstocknumber.org?

  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
  •   Quality Fast Service
ASA Aviation Suppliers Association Member Logo
NQA AS 9120 Suppliers Logo
ITAR Registered International Traffic in Arms Regulations Logo