A644XB-2-8-2

Safety Relief Valve

NSN 4820-00-010-1680

DEMIL
Shelf Life
UOM
NIIN
Demil:
NO
Shelf Life:
N/A
UOM:
1 EA
NIIN:
000101680

Product Technical Spec.

Thread Class:
3a all ends
Thread Direction:
Right-hand all ends
Flow Control Device:
Poppet
Bonnet Type:
Inside spring
Bonnet Attachment Method:
Integral
Disk Loading Method:
Spring
Maximum Operating Temp:
225.0 degrees fahrenheit single response
Connection Style:
G42 flared (tube) all ends
Connection Style:
Flared (tube) all ends
Valve Operation Method:
Automatic
Connection Type:
Threaded external tube all ends
Features Provided:
Bonnet packing and pressure tight outlet side
Thready Qty Per Inch (tpi):
16 all ends
Adjustable Pressure Range:
+10.0 to 50.0 pounds per square inch
Maximum Operating Pressure:
50.0 pounds per square inch single response
Thread Size:
0.750 inches all ends
Seat Angle:
37.0 degrees all ends
Opening Pressure Setting:
35.0 pounds per square inch
Outside Diameter Tube Accommodated:
0.500 inches all ends
Material:
Steel comp 303 body
Material:
Steel comp 303 seat
Material:
Steel comp 416 flow control device
Material Specification:
Fedstd66, aisi303/sae30303 federal standard single material response seat
Material Specification:
Fedstd66, aisi303/sae30303 federal standard single material response body
Material Specification:
Fedstd66, aisi416/sae51416 federal standard single material response flow control device
Media For Which Designed:
Water-oil-gas single response
Surface Treatment:
Passivate
Style Designator:
C1 angle
Style Designator:
Angle
Thread Series Designator:
Unf all ends
Furnished Items And Quantity:
2 ferrule
NSN:
4820-00-010-1680
Item Name:
Valve,relief,pressure
Cage Code:
86768

Cross Referenced Parts

Part Number
Cage
RNCC
RNVC
RNAAC
Status
MSDS
SADC
Part Number:
21C2222-261
Cage Code:
31682
RNCC:
3
RNVC:
2
RNAAC:
KE
Status:
A
MSDS:
SADC:
Part Number:
A644XB-2-8-2
Cage Code:
09990
RNCC:
3
RNVC:
2
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
21C2222-261
Cage Code:
24446
RNCC:
5
RNVC:
2
RNAAC:
XX
Status:
A
MSDS:
SADC:
Part Number:
A644X2-8
Cage Code:
86768
RNCC:
5
RNVC:
9
RNAAC:
XX
Status:
A
MSDS:
SADC:
Part Number:
21C2222-261
Cage Code:
07482
RNCC:
5
RNVC:
9
RNAAC:
XX
Status:
A
MSDS:
SADC:

Part Identification

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

Part Materials

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
127220
UFC:
64490
LTL:
77.5
LCL:
--
WCC:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Pricing & Availability

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Privacy | Terms

Definition Definition of approved item name (AIN): "Pressure Relief Valve"

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.

MOE Major Organizational Entities

Entity
DSOR
User:
DEPARTMENT OF THE NAVY Dept. of the Navy
DSOR:
User:
ITALY Italy
DSOR:
Import / Export
  • Schedule B: 8481400000
  • SITC: 74740
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Classification: Safety or relief valves


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