Model: 256541-01

Check Valve

Special Features:

Valve, swing check type

Properties:

Flow Control Device

Disk

Disk Loading Method

Weight

Bolt Hole Quantity

4 all ends

Maximum Operating Temp

100.0 degrees fahrenheit single response

End Application

Mars class afs

Valve Operation Method

Automatic

Flange Shape

Round with holes all ends

Connection Type

Flange all ends

Mounting Facility

Bracket

Mounting Position

Horizontal

Valve Size

2.500 inches

Maximum Operating Pressure

285.0 pounds per square inch single response

Outside Diameter

7.000 inches all ends

Face To Face Distance

8.500 inches

Thickness

0.938 inches all ends

Bolt Hole Diameter

0.750 inches all ends

Bolt Circle Diameter

5.500 inches all ends

Flange Face Design

Raised straight all ends

Raised Face Height

0.062 inches all ends

Raised Face Diameter

4.125 inches all ends

Material

Steel body

Material Specification

Astm a216, grade wcb assn standard single material response body

Surface Treatment

Zinc

Style Designator

Straight through flanged ends

NSN

4820-01-441-5270

Part Number

256541-01

Description

Valve,check

CAGE

14959

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 256541-01 NSN 4820-01-441-5270

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