Model: 2181251ASSYRE6IN

Check Valve

Properties:

Flow Control Device

Disk

Bolt Hole Quantity

14 all ends

Valve Operation Method

Automatic

Flange Shape

Round with holes all ends

Connection Type

Flange all ends

Mounting Position

Horizontal

Valve Size

6.000 inches

Maximum Operating Pressure

700.0 pounds per square inch single response

Outside Diameter

10.375 inches all ends

Face To Face Distance

18.000 inches

Thickness

1.938 inches all ends

Bolt Hole Diameter

0.688 inches all ends

Bolt Circle Diameter

9.375 inches all ends

Flange Face Design

Plain all ends

Material

Copper alloy body

Material

Rubber butadiene-acrylonitrile class nbr flow control device and aluminum alloy flow control device

Material Specification

Mil-b-21230 military specification single material response body

Material Specification

Mil-p-5516, class b military specification 1st material response flow control device and mil-b-24480 military specification 2nd material response flow control device

Media For Which Designed

Water-oil-gas single response

Style Designator

Straight through flanged ends

NSN

4820-01-074-0297

Part Number

2181251ASSYRE6IN

Description

Valve,check

CAGE

53711

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 2181251ASSYRE6IN NSN 4820-01-074-0297

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: 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