Model: S2981D

Safety Relief Valve

Special Features:

Modified with flanged ends and flat disk

Properties:

Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Threaded
Disk Loading Method
Spring
Bolt Hole Quantity
8 1st end
Maximum Operating Temp
425.0 degrees fahrenheit single response
Valve Operation Method
Automatic
Flange Shape
Round with holes 1st end
Connection Type
Flange 1st end
Adjustable Pressure Range
+26.0/+75.0 pounds per square inch
Maximum Operating Pressure
100.0 pounds per square inch single response
Outside Diameter
6.625 inches 1st end
Thickness
0.500 inches 1st end
Bolt Hole Diameter
0.562 inches 1st end
Bolt Circle Diameter
5.500 inches 1st end
Flange Face Design
Plain 1st end
Material
Copper alloy flow control device
Material
Copper alloy seat
Material
Copper alloy stem
Material
Copper alloy body
Style Designator
Angle
NSN
4820-00-446-3585
Part Number
S2981D
Description
Valve,safety Relief
CAGE
37239

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 S2981D NSN 4820-00-446-3585

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
41.0000lbs
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:
77.5
WCC:
594
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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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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