Model: MIL-V-552

Check Valve

Properties:

Thread Class

3a 1st end

Thread Direction

Right-hand 1st end

Flow Control Device

Cone

Disk Loading Method

Spring

Connection Style

Flared (tube) 1st end

Connection Type

Threaded external tube 1st end

Mounting Position

Horizontal or vertical

Thready Qty Per Inch (tpi)

14 1st end

Maximum Operating Pressure

3000.0 pounds per square inch single response

Thread Size

0.875 inches 1st end

Seat Angle

37.0 degrees 1st end

Outside Diameter Tube Accommodated

0.625 inches 1st end

Media For Which Designed

Hydraulic fluid, phosphate-ester base single response

Style Designator

Straight thru

Test Data Document

81349-mil-v-5524 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).

Thread Series Designator

Unf 1st end

Nondefinitive Specification/std Data

A style and 3000 class

NSN

4820-00-529-3639

Part Number

MIL-V-552

Description

Valve,check

CAGE

81349

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 MIL-V-552 NSN 4820-00-529-3639

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:

0.5000lbs

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:

127220

UFC:

64490

LTL:

77.5

LCL:

77.5

WCC:

594

TCC:

SHC:

ACC:

Equipment for Aircraft

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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