Model: 123A-3 PL4351

Check Valve

Properties:

Thread Class

2a all ends

Thread Direction

Right-hand all ends

Flow Control Device

Disk

Disk Loading Method

Spring

Renewable Seat Ring Type

Retaining screw

Connection Style

Double threaded section boss fitting gasket with locknut sealing, boss all ends

Valve Operation Method

Automatic

Connection Type

Threaded external boss all ends

Mounting Position

Horizontal or vertical

Thready Qty Per Inch (tpi)

12 all ends

Maximum Operating Pressure

6000.0 pounds per square inch single response

Thread Size

1.750 inches all ends

Material

Copper alloy body

Material

Nickel alloy seat

Material Specification

Qq-b-637 federal specification single material response body

Material Specification

Qq-n-281 federal specification single material response flow control device

Style Designator

Straight thru

Thread Series Designator

Un all ends

NSN

4820-00-147-8546

Part Number

123A-3 PL4351

Description

Valve,check

CAGE

99565

A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.

Part 123A-3 PL4351 NSN 4820-00-147-8546

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

05487

FIIG:

A530B0

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:

3.1000lbs

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:

050855

UFC:

29290

LTL:

RATING VARIABLE

LCL:

WCC:

576

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 8481301090
SITC: 74730
End Use: Industrial machines, other
NAICS: 332911
USDA: 1

Freight Class: Check valves of copper having a pressure rating of 850 kpa or over