Model: 66191

Safety Relief Valve

Properties:

Flow Control Device
Poppet
Disk Loading Method
Spring
Bolt Hole Quantity
4 1st end
Bolt Hole Quantity
4 2nd end
Maximum Operating Temp
150.0 degrees fahrenheit single response
Valve Operation Method
Automatic
Flange Shape
Round with holes 1st end
Flange Shape
Round with holes 2nd end
Connection Type
Flange 2nd end
Connection Type
Flange 1st end
Features Provided
Pressure tight outlet side
Adjustable Pressure Range
+558.0/+677.0 pounds per square inch
Maximum Operating Pressure
900.0 pounds per square inch single response
Outside Diameter
4.250 inches 2nd end
Outside Diameter
4.875 inches 1st end
Face To Face Distance
3.375 inches
First Connection Face To Centerline Distance
3.750 inches
Bolt Hole Diameter
0.562 inches 2nd end
Bolt Hole Diameter
0.687 inches 1st end
Bolt Circle Diameter
3.125 inches 2nd end
Bolt Circle Diameter
3.500 inches 1st end
Flange Face Design
Raised straight 1st end
Flange Face Design
Plain 2nd end
Media For Which Designed
Water-oil-gas single response
Style Designator
Angle
NSN
4820-00-202-8260
Part Number
66191
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 66191 NSN 4820-00-202-8260

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:
--
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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