Model: N-552/N669

Fluid Pressure Regulating Valve

Properties:

Body Material

Bronze, astm b61

Body Style

Straight thru

Furnished Items

Union nut and tailpiece

Media For Which Designed

Water, fresh and water, salt

First End Connection Type

Unthreaded internal pipe

First End Style Designator

Socket w/brazing ring

First End Pipe Size Accommodated

2.000 inches

Second End Relationship With First End

Identical

Seat Material

Nickel aluminum bronze, astm b-150

Flow Control Device

Disk

Flow Control Device Material

Rubber, buna-n

End Connection Quantity

Outlet Pressure Range

+25.0/+60.0 pounds per square inch

Regulation Type

Automatic double stage

Valve Stem Design

Double seat

Valve Loading Method

Spring

Maximum Inlet Pressure Rating

250.0 pounds per square inch

Outlet Pressure Setting

50.0 pounds per square inch

Outlet Pressure Accuracy Rating

Not rated

Filter

Not included

End Application

170 ft patrol coastal

Tempurature Rating

180.0 degrees fahrenheit

NSN

4820-01-171-6702

Part Number

N-552/N669

Description

Valve,regulating,fluid Pressure

CAGE

35795

A valve designed to automatically maintain within close limits a predetermined outlet pressure which may be adjustable within a specified range regardless of the higher fluctuating or constant inlet pressure. It is designed for use with compressed gas(es) and various liquids and may include gauges. It may be inline or cartridge (manifold) design. Excludes regulator, pressure, medical gas administration apparatus; regulator, oxygen, barometric continuous flow; regulator, oxygen demand; regulator, oxygen diluter demand; and valve(1), fluid pressure regulating, aircraft.

Part N-552/N669 NSN 4820-01-171-6702

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

27565

FIIG:

A21100

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:

22.0000lbs

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: 8481809015
SITC: 74780
End Use: Industrial machines, other
NAICS: 332911
USDA: 1

Freight Class: Regulator valves, self-operating, for controlling variables such as temperature, pressure, flow and liquid level