Model: SD121

Safety Relief Valve

Properties:

Flow Control Device

Disk

Bolt Hole Quantity

8 all ends

Valve Operation Method

Automatic

Flange Shape

Round with holes all ends

Connection Type

Flange all ends

Valve Size

3.000 inches

Adjustable Pressure Range

+160.0/+186.0 pounds per square inch

Outside Diameter

8.250 inches 1st end

Outside Diameter

9.000 inches 2nd end

Thickness

0.938 inches 2nd end

Thickness

1.125 inches 1st end

First Connection Face To Centerline Distance

6.375 inches

Bolt Hole Diameter

0.750 inches 2nd end

Bolt Hole Diameter

0.875 inches 1st end

Second Connection Face To Centerline Distance

6.125 inches

Bolt Circle Diameter

6.625 inches 1st end

Bolt Circle Diameter

7.500 inches 2nd end

Flange Face Design

Raised straight all ends

Raised Face Height

0.062 inches 2nd end

Raised Face Diameter

1.688 inches 2nd end

Material

Steel body

NSN

4820-01-198-8610

Part Number

SD121

Description

Valve,safety Relief

CAGE

75954

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes valve (1), relief, pressure and temperature.

Part SD121 NSN 4820-01-198-8610

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

05488

FIIG:

A046B0

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:

42.0000lbs

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:

051080

UFC:

29300

LTL:

RATING VARIABLE

LCL:

WCC:

594

TCC:

SHC:

ACC:

Trailers/Vehicles

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Schedule B and Export

Schedule B: 8481400000
SITC: 74740
End Use: Industrial machines, other
NAICS: 332911
USDA: 1

Freight Class: Safety or relief valves