Model: 311903-25

Valve Seat
Description:

0.374 inches flange diameter, 0.240 inches body outside diameter, 0.114 inches body inside diameter, 0.147 mils flange seat to disk end height.

Special Features:

Four slots 0.070 in. Max spaced 91 degrees max apart

Properties:

Flange Diameter
Between 0.374 inches and 0.375 inches
Body Outside Diameter
Between 0.240 inches and 0.260 inches
Body Inside Diameter
Between 0.114 inches and 0.118 inches
Seat Radius
0.078 inches
Flange Seat To Disk End Height
0.147 mils and 0.163 centimeters
Under Flange Height
Between 0.269 inches and 0.275 inches
Seating Surface Shape
Flat
Material
Steel
Material Specification
Mil-s-7720, comp 302 military specification single material response
Style Designator
Plain flanged
Fsc Application Data
Valve, temperatore control system
NSN
4810-00-009-0423
Part Number
311903-25
Description
Seat,valve
CAGE
59364

A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see insert, engine valve seat.

Part 311903-25 NSN 4810-00-009-0423

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22113
FIIG:
A15500
Concept No.:
App. Key:
A
Cond. Code:
2
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:
0.1000lbs
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:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 8481909090
  • SITC: 74790
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Parts of taps, cocks, valves and similar appliances, nesoi

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