Model: FF2250 3-4 285

Safety Relief Valve

Properties:

Flow Control Device
Disk
Bonnet Type
Exposed spring
Bonnet Attachment Method
Bolted
Disk Loading Method
Spring
Bolt Hole Quantity
4 all ends
Maximum Operating Temp
650.0 degrees fahrenheit single response
Valve Operation Method
Automatic or manual
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Features Provided
Valve stem lock shield
Valve Size
0.750 inches
Adjustable Pressure Range
+276.0/+450.0 pounds per square inch
Maximum Operating Pressure
600.0 pounds per square inch single response
Outside Diameter
3.812 inches 2nd end
Outside Diameter
4.625 inches 1st end
Thickness
0.438 inches 2nd end
Thickness
0.625 inches 1st end
First Connection Face To Centerline Distance
3.000 inches
Bolt Hole Diameter
0.562 inches 2nd end
Bolt Hole Diameter
0.688 inches 1st end
Second Connection Face To Centerline Distance
3.000 inches
Bolt Circle Diameter
2.688 inches 2nd end
Bolt Circle Diameter
3.250 inches 1st end
Flange Face Design
Raised straight 1st end
Flange Face Design
Plain 2nd end
Raised Face Height
0.250 inches 1st end
Raised Face Diameter
2.500 inches 1st end
Material
Nickel alloy seat
Material
Nickel alloy stem
Material
Nickel alloy flow control device
Material
Steel body
Material Specification
Mil-s-872 military specification single material response body
Media For Which Designed
Steam single response
Style Designator
Angle flanged ends
NSN
4820-00-289-1518
Part Number
FF2250 3-4 285
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 FF2250 3-4 285 NSN 4820-00-289-1518

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:
--
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:
576
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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