Model: 2556-8819

Check Valve

Special Features:

5.0 psi valve cracking pressure

Properties:

Thread Direction

Right-hand all ends

Flow Control Device

Poppet

Disk Loading Method

Spring

Maximum Operating Temp

250.0 degrees fahrenheit single response

Connection Style

Plain, optional end (pipe) all ends

Valve Operation Method

Automatic

Connection Type

Threaded internal pipe all ends

Mounting Position

Horizontal or vertical

Maximum Operating Pressure

3000.0 pounds per square inch single response

Thread Size

0.125 inches all ends

Material

Aluminum alloy 2024

Material Specification

Qq-a-225/6, alloy 2024, t4 federal specification single material response

Media For Which Designed

Hydraulic fluid, phosphate-ester base 1st response

Media For Which Designed

Hydraulic fluid, silicate-ester base 2nd response

Surface Treatment

Anodize

Style Designator

Straight thru

Thread Series Designator

Nptf all ends

NSN

4820-00-555-3156

Part Number

2556-8819

Description

Valve,check

CAGE

11530

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 2556-8819 NSN 4820-00-555-3156

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:

576

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 8481309000
SITC: 74730
End Use: Industrial machines, other
NAICS: 332911
USDA: 1

Freight Class: Check valves of materials other than copper, iron or steel