Model: 31F-CB7-4INCH

Check Valve

Properties:

Flow Control Device

Disk

Disk Loading Method

Weight

Bolt Hole Quantity

8 all ends

End Application

Strategic sealift conversion ships class

Valve Operation Method

Automatic

Flange Shape

Round with holes all ends

Connection Type

Flange all ends

Mounting Position

Horizontal

Valve Size

4.000 inches

Outside Diameter

9.000 inches all ends

Face To Face Distance

11.500 inches

Thickness

0.938 inches all ends

Bolt Hole Diameter

0.625 inches all ends

Bolt Circle Diameter

7.500 inches all ends

Flange Face Design

Raised straight all ends

Raised Face Height

0.062 inches all ends

Raised Face Diameter

6.188 inches all ends

Material

Steel

Material Specification

Astm a216 wcb assn standard single material response

Style Designator

Straight through flanged ends

NSN

4820-01-434-7970

Part Number

31F-CB7-4INCH

Description

Valve,check

CAGE

61661

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 31F-CB7-4INCH NSN 4820-01-434-7970

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

05487

FIIG:

A530B0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

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:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

051080

UFC:

29300

LTL:

RATING VARIABLE

LCL:

WCC:

594

TCC:

SHC:

ACC:

Trailers/Vehicles

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Schedule B and Export

Schedule B: 8481302090
SITC: 74730
End Use: Industrial machines, other
NAICS: 332911
USDA: 1

Freight Class: Check valves of steel