Model: 8528

Safety Relief Valve

Properties:

Flow Control Device
Disk
Maximum Operating Temp
425.0 degrees fahrenheit single response
Valve Operation Method
Automatic
Connection Type
Unthreaded internal tube all ends
Adjustable Pressure Range
+45.0/+55.0 pounds per square inch
Maximum Operating Pressure
400.0 pounds per square inch single response
Outside Diameter Tube Accommodated
1.000 inches all ends
Material
Copper alloy stem
Material
Copper alloy body
Material
Nickel alloy seat
Material
Nickel alloy flow control device
Material
Rubber butadiene-acrylonitrile class nbr packing
Material Specification
Qq-c-390, alloy d4/d/ federal specification single material response body
Material Specification
Qq-b-637 federal specification single material response stem
Material Specification
Qq-n-281 federal specification single material response flow control device
Material Specification
Qq-n-281 federal specification single material response seat
Media For Which Designed
Steam 2nd response
Media For Which Designed
Water, salt 3rd response
Media For Which Designed
Air 1st response
NSN
4820-01-130-5379
Part Number
8528
Description
Valve,safety Relief
CAGE
01343

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 8528 NSN 4820-01-130-5379

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:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.5000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
127220
UFC:
64490
LTL:
77.5
LCL:
--
WCC:
671
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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