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.:
1
App. Key:
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

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:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
051080
UFC:
29300
LTL:
RATING VARIABLE
LCL:
--
WCC:
576
TCC:
Z
SHC:
9
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

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