Model: 559B1M-135

Safety Relief Valve

Special Features:

Pop-off type

Properties:

Pipe Size Accommodated
0.125 inches 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Maximum Operating Temp
250.0 degrees fahrenheit single response
Connection Style
G46b plain (pipe) 1st end
Connection Style
Plain (pipe) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded external pipe 1st end
Features Provided
Valve stem lock shield
Maximum Operating Pressure
200.0 pounds per square inch single response
Thread Size
0.125 inches 1st end
Opening Pressure Setting
135.0 pounds per square inch
Material
Copper alloy flow control device and rubber butadiene-acrylonitrile class nbr flow control device
Material
Copper alloy seat
Material
Copper alloy body
Media For Which Designed
Acetylene 2nd response
Media For Which Designed
Air 1st response
Media For Which Designed
Ammonia, gaseous 3rd response
Media For Which Designed
Hydrogen 5th response
Style Designator
Straight through note: to be used for valve bodies of one section only.
Thread Series Designator
Npt 1st end
NSN
4820-00-269-4633
Part Number
559B1M-135
Description
Valve,safety Relief
CAGE
91816

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 559B1M-135 NSN 4820-00-269-4633

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

Freight Classification

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