Model: M31-8

Exhaust-intake Pneumatic Muffler

Properties:

Overall Length
76.000 inches
Inlet Connection Type
Flange
Overall Diameter
22.000 inches
Design Type
Dry
Inlet Connection Quantity
1
Coolant Type
Air
Muffler Design
Baffle
Baffle Quantity
2
Tube Quantity
2
Body Shape
Round
Operating Position
Universal
Inlet Location
Centrally located in end section of body
Inlet Projection Length
6.000 inches
Inlet Flange Shape
Round
Inlet Flange Mounting Provision And Quantity
8 holes
Inlet Flange Mounting Hole Diameter
0.875 inches
Inlet Flange Mounting Provision Spacing
11-3/4 in. @bolt circle dia
Outlet Connection Quantity
1
Outlet Connection Type
Flange
Outlet Location
Centrally located in end section of body
Outlet Projection Length
6.000 inches
Outlet Flange Shape
Round
Outlet Flange Mounting Provision And Quantity
8 holes
Outlet Flange Mounting Hole Diameter
0.875 inches
Outlet Flange Mounting Provision Spacing
11-3/4 in. Bolt circle dia
Material
Steel
Material
Steel
Surface Treatment
Primer and paint heat resistant
Surface Treatment
Paint, primer, heat resistant
NSN
4330-00-460-6942
Part Number
M31-8
Description
Pneumatic Muffler,exhaust-intake
CAGE
11839

A noise control/filtering device of various sizes, shapes, designs, materials (metallic/non-metallic) and varied mounting configurations used to diffuse air blasts, lowers air velocity, reduce noise, filtration of airborne moisture and/or dust contamination, pressure equalization, speed control for air operated devices. For vehicular application see muffler, (as modified).

Part M31-8 NSN 4330-00-460-6942

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
37112
FIIG:
T135-C
Concept No.:
App. Key:
CD
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:
77.0 X 23.0 X 23.0
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:
F
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
125850
UFC:
61440
LTL:
RATING VARIABLE
LCL:
--
WCC:
594
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8487900080
  • SITC: 74999
  • End Use: Industrial machines, other
  • NAICS: 333999
  • USDA: 1

Freight Class: Machinery parts not containing electrical features, and not specified or included elsewhere in chapter 84, except ships' propellers

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