Model: 81531G

Check Valve

Properties:

Flow Control Device

Disk

Disk Loading Method

Weight

Renewable Seat Ring Type

Threaded

Bolt Hole Quantity

6 1st end

Valve Operation Method

Automatic

Flange Shape

Round with holes 1st end

Connection Type

Flange 1st end

Mounting Facility

Bracket

Mounting Position

Horizontal or vertical

Valve Size

2.000 inches

Maximum Operating Pressure

150.0 pounds per square inch single response

Outside Diameter

5.560 inches 1st end

Face To Face Distance

9.000 inches

Thickness

0.440 inches 1st end

Bolt Hole Diameter

0.562 inches 1st end

Bolt Circle Diameter

4.438 inches 1st end

Flange Face Design

Plain 1st end

Material

Copper alloy 922 body

Material

Nickel alloy 400 seat or nickel alloy r-405 seat

Style Designator

Straight through flanged ends

NSN

4820-01-092-4293

Part Number

81531G

Description

Valve,check

CAGE

86184

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 81531G NSN 4820-01-092-4293

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:

127220

UFC:

64490

LTL:

77.5

LCL:

77.5

WCC:

594

TCC:

SHC:

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