Model: 661A3

Fluid Pressure Regulating Valve

Special Features:

Inlet connections are 1/8 inch - npt; outlet connections are 1/4 inch - npt

Properties:

Media For Which Designed

Air

Flow Control Device

Diaphragm

Flow Control Device Material

Rubber, synthetic

End Connection Quantity

Mounting Facility

Bracket

Regulation Type

Automatic double stage

Valve Loading Method

Spring

Maximum Inlet Pressure Rating

80.0 pounds per square inch

End Application

Main engine lo controls 5-250-0-e no.3 mn eng rm

Tempurature Rating

Between -40.0 degrees fahrenheit and 180.0 degrees fahrenheit

Part Name Assigned By Controlling Agency

Model 661 amplifying relay with bias

NSN

4820-01-516-3990

Part Number

661A3

Description

Valve,regulating,fluid Pressure

CAGE

41387

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 661A3 NSN 4820-01-516-3990

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:

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:

127200

UFC:

64480

LTL:

85.0

LCL:

WCC:

594

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