Model: 4749-1

Check Valve

Special Features:

Flange serrated gasket finish, spring matl: inconel

Properties:

Flow Control Device
Disk
Bolt Hole Quantity
8 all ends
End Application
W/s: nimitz class cvn
Valve Operation Method
Automatic
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Valve Size
8.000 inches
Maximum Operating Pressure
150.0 pounds per square inch single response
Outside Diameter
11.000 inches all ends
Face To Face Distance
5.000 inches
Bolt Hole Diameter
0.750 inches all ends
Flange Face Design
Plain all ends
Part Name Assigned By Controlling Agency
8 inch wafer check valve
Material
Copper alloy 954 body
Material
Rubber polymethylene-perfluoroalkylene class fkm seat
Material
Steel comp 316 flow control device
Material Specification
Astm a 351 grade cf8m military specification 1st material response flow control device
Material Specification
B148 uns c95400 military specification 1st material response body
Media For Which Designed
Water-oil-gas single response
Style Designator
Straight through flanged ends
NSN
4820-01-497-3181
Part Number
4749-1
Description
Valve,check
CAGE
000B3

A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.

Part 4749-1 NSN 4820-01-497-3181

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05487
FIIG:
A530B0
Concept No.:
1
App. Key:
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:
051080
UFC:
29300
LTL:
RATING VARIABLE
LCL:
--
WCC:
594
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8481301090
  • SITC: 74730
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Check valves of copper having a pressure rating of 850 kpa or over

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