Model: 621-4-4

System Pressure Regulating Valve

Special Features:

For air compressor through 5 hp

Properties:

Body Material

Copper alloy

Body Style

Angle

Media For Which Designed

Air

First End Connection Type

Threaded external pipe

First End Style Designator

Gasket seal

First End Thread Size And Series/type Designator

1/2-14 npt

First End Thread Direction

Right-hand

End Connection Quantity

NSN

4820-01-435-0291

Part Number

621-4-4

Description

Valve,regulating,system Pressure

CAGE

75336

A value designed to automatically maintain within close limits a predetermined pressure within a closed system regardless of the higher fluctuating or constant inlet pressure. The excess pressure is by-passed to the accumulator or reservoir in lieu of passing through the entire system. It is designed primarily for use in refrigeration and air conditioning systems. Excludes valve, regulating, fluid pressure and valve, calibrated flow.

Part 621-4-4 NSN 4820-01-435-0291

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

35896

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:

Trailers/Vehicles

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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