Model: H6641-1/4S28

Fluid Pressure Regulating Valve

Properties:

Body Material

Steel

Body Style

Straight thru

Media For Which Designed

Hydrocarbon fuels and oils

First End Connection Type

Threaded internal pipe

First End Style Designator

Optional end

First End Thread Size And Series/type Designator

1/4-18 npt

First End Thread Direction

Right-hand

Second End Relationship With First End

Identical

Flow Control Device

Piston, spring loaded

End Connection Quantity

Regulation Type

1st stage manual, 2nd stage automatic

Manual Control Method

Knob

Valve Loading Method

Spring

Maximum Inlet Pressure Rating

6000.0 pounds per square inch

Filter

Not included

End Application

4920-01-393-4305; support equipment (se) b-2 bomber aircraft

NSN

4820-01-449-9424

Part Number

H6641-1/4S28

Description

Valve,regulating,fluid Pressure

CAGE

86768

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 H6641-1/4S28 NSN 4820-01-449-9424

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