Model: 559T-4D-15

Safety Relief Valve

Properties:

Thread Class
3a 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Maximum Operating Temp
-40.0 degrees fahrenheit 1st response270.0 degrees fahrenheit 2nd response
Connection Style
G42 flared (tube) 1st end
Connection Style
Flared (tube) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded external tube 1st end
Features Provided
Pressure tight outlet side
Adjustable Pressure Range
+0.0/+200.0 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 1st end
Opening Pressure Setting
15.0 pounds per square inch
Outside Diameter Tube Accommodated
0.250 inches 1st end
Material
Rubber butadiene-acrylonitrile class nbr flow control device and steel comp 303 flow control device
Material
Steel comp 303 body
Material
Steel comp 303 seat
Material
Steel comp 303 stem
Material Specification
Fed standard 66 federal standard 2nd material response flow control device
Material Specification
Fed standard 66 federal standard single material response body
Material Specification
Fed standard 66 federal standard single material response seat
Material Specification
Fed standard 66 federal standard single material response stem
Media For Which Designed
Refrigerant 12 4th response
Media For Which Designed
Acetylene 2nd response
Media For Which Designed
Air 1st response
Media For Which Designed
Ammonia, gaseous 3rd response
Media For Which Designed
Hydrogen 5th response
Style Designator
Straight through note: to be used for valve bodies of one section only.
Thread Series Designator
Unjf 1st end
NSN
4820-00-802-2225
Part Number
559T-4D-15
Description
Valve,safety Relief
CAGE
91816

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.

Part 559T-4D-15 NSN 4820-00-802-2225

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05488
FIIG:
A046B0
Concept No.:
1
App. Key:
AP
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
127220
UFC:
64490
LTL:
77.5
LCL:
--
WCC:
594
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 8481400000
  • SITC: 74740
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Safety or relief valves

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