Model: 1905K1

Safety Relief Valve

Properties:

Flow Control Device

Disk

Bonnet Type

Inside spring

Bonnet Attachment Method

Bolted

Disk Loading Method

Spring

Bolt Hole Quantity

4 2nd end

Bolt Hole Quantity

8 1st end

Maximum Operating Temp

450.0 degrees fahrenheit single response

Valve Operation Method

Automatic

Flange Shape

Round with holes all ends

Connection Type

Flange all ends

Valve Size

4.000 inches

Maximum Operating Pressure

285.0 pounds per square inch single response

Outside Diameter

7.500 inches 2nd end

Outside Diameter

9.000 inches 1st end

Thickness

0.750 inches 2nd end

Thickness

0.938 inches 1st end

First Connection Face To Centerline Distance

6.375 inches

Bolt Hole Diameter

0.625 inches all ends

Second Connection Face To Centerline Distance

6.125 inches

Bolt Circle Diameter

6.000 inches 2nd end

Bolt Circle Diameter

7.500 inches 1st end

Flange Face Design

Raised straight all ends

Raised Face Diameter

5.000 inches 2nd end

Raised Face Diameter

6.188 inches 1st end

Material

Steel body

Material

Stainless steel stem

Material Specification

Asme sa216 grade wcb assn standard single material response body

Material Specification

Astm a582 type 416 cond a assn standard single material response stem

Style Designator

C1a angle flanged ends

NSN

4820-01-219-6518

Part Number

1905K1

Description

Valve,safety Relief

CAGE

16497

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 1905K1 NSN 4820-01-219-6518

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:

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:

127220

UFC:

64490

LTL:

77.5

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