Model: 6660553-1

Safety Relief Valve

Properties:

Disk Loading Method
Spring
Bolt Hole Quantity
8 1st end
Flange Shape
Round with holes 1st end
Connection Type
Flange 1st end
Adjustable Pressure Range
+10.0/+20.0 pounds per square inch
Outside Diameter
8.250 inches 1st end
Bolt Hole Diameter
0.812 inches 1st end
Bolt Circle Diameter
6.625 inches 1st end
Flange Face Design
Raised straight 1st end
Material
Copper alloy seat
Material
Copper alloy stem
Material
Copper alloy body
Style Designator
Straight thru
NSN
4820-00-289-3724
Part Number
6660553-1
Description
Valve,safety Relief
CAGE
24446

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 6660553-1 NSN 4820-00-289-3724

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:
12.2000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
M
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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