Model: 1511-H

Safety Relief Valve

Properties:

Thread Direction
Right-hand 1st end
Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Bolted
Disk Loading Method
Spring
Bolt Hole Quantity
4 2nd end
Maximum Operating Temp
450.0 degrees fahrenheit single response
End Application
Heating system onboard 270 ft wmec cg vessels
Connection Style
Plain, optional en (pipe) 1st end
Valve Operation Method
Automatic
Flange Shape
Round with holes 2nd end
Connection Type
Flange 2nd end
Connection Type
Threaded internal pipe 1st end
Valve Size
2.500 inches
Maximum Operating Pressure
30.0 pounds per square inch single response
Thread Size
2.500 inches 1st end
Outside Diameter
6.125 inches 2nd end
Thickness
0.812 inches 2nd end
First Connection Face To Centerline Distance
4.000 inches
Bolt Hole Diameter
0.750 inches 2nd end
Second Connection Face To Centerline Distance
4.250 inches
Bolt Circle Diameter
4.500 inches 2nd end
Flange Face Design
Raised straight 2nd end
Raised Face Height
0.062 inches 2nd end
Raised Face Diameter
3.562 inches 2nd end
Material
Copper alloy flow control device
Material
Copper alloy seat
Material
Copper alloy stem
Material
Iron cast body
Style Designator
Angle flanged ends
Thread Series Designator
Npt 1st end
NSN
4820-01-121-8057
Part Number
1511-H
Description
Valve,safety Relief
CAGE
16497

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 1511-H NSN 4820-01-121-8057

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

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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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