Model: 521-233

Check Valve

Properties:

Flow Control Device

Piston

Bolt Hole Quantity

4 all ends

Width

3.810 inches all ends

Length

4.440 inches all ends

Valve Operation Method

Automatic

Flange Shape

Rectangular with holes all ends

Connection Type

Flange all ends

Mounting Position

Horizontal or vertical

Valve Size

0.750 inches

Maximum Operating Pressure

3000.0 pounds per square inch single response

Outside Diameter

2.560 inches all ends

Face To Face Distance

3.000 inches

Thickness

1.500 inches all ends

Bolt Hole Diameter

0.656 inches all ends

Center To Center Distance Between Bolt Holes Along Length

3.190 inches all ends

Center To Center Distance Between Bolt Holes Along Width

2.560 inches all ends

Flange Face Design

Plain all ends

Material

Steel body

Style Designator

Straight through flanged ends

NSN

4820-00-623-9128

Part Number

521-233

Description

Valve,check

CAGE

35181

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 521-233 NSN 4820-00-623-9128

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:

5.5000lbs

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: 8481302090
SITC: 74730
End Use: Industrial machines, other
NAICS: 332911
USDA: 1

Freight Class: Check valves of steel