Model: 8771556-1

Gaseou Pressure Equalizing Valve

Properties:

Body Material

Aluminum alloy, qq-a-225/6, alloy 2024, t4

Outside Surface Treatment

Anodized and oxide film, mil-c-5541

Body Style

Single connection, straight flow

Furnished Items

Nut and washer

Media For Which Designed

Air

First End Connection Type

Threaded external boss

First End Style Designator

External seat for gasket seal

First End Thread Direction

Right-hand

Seat Material

Plastic, polytetrafluoroethylene

Flow Control Device

Poppet

End Connection Quantity

Disk Loading Method

Spring

Opening Pressure Setting

2.5 pounds per square inch

Valve Venting Design Type

Atmospheric

Valve Relief Design Type

Pressure and vacuum

NSN

4820-00-974-9643

Part Number

8771556-1

Description

Valve,pressure Equalizing,gaseou

CAGE

49671

A valve consisting of a single deadweight loaded disk, or two deadweight loaded disks each with a seperate seat. It is specifically designed for the relief of small pressure and vacuum conditions within a tank or other container to or from the atmosphere. The center of a single deadweight loaded disk may contain a spring loaded disk forming an additional seat or aperture. It may be spring loaded and/or equipped with a manual unloader on either the pressure or vacuum side. Exclude valve, vacuum breaking.

Part 8771556-1 NSN 4820-00-974-9643

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

10958

FIIG:

A07100

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:

127220

UFC:

64490

LTL:

77.5

LCL:

WCC:

576

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 8481809050
SITC: 74780
End Use: Industrial machines, other
NAICS: 332911
USDA: 1

Freight Class: Other taps, cocks, valves, etc., nesoi