Model: 1553

Safety Relief Valve

Properties:

Flow Control Device

Disk

Bonnet Type

Exposed spring

Bonnet Attachment Method

Bolted

Disk Loading Method

Spring

Valve Discharge Flow Rate

63800.0 pounds per hour

Renewable Seat Ring Type

Threaded

Bolt Hole Quantity

8 1st end

Bolt Hole Quantity

9 2nd end

Valve Operation Method

Automatic or manual

Flange Shape

Round with holes 1st end

Flange Shape

Round with holes 2nd end

Connection Type

Flange 2nd end

Connection Type

Flange 1st end

Features Provided

Pressure tight outlet side

Valve Size

2.500 inches

Outside Diameter

9.250 inches 2nd end

Outside Diameter

9.625 inches 1st end

Bolt Hole Diameter

0.812 inches 2nd end

Bolt Hole Diameter

1.062 inches 1st end

Bolt Circle Diameter

7.500 inches 1st end

Bolt Circle Diameter

7.688 inches 2nd end

Flange Face Design

Plain 1st end

Flange Face Design

Plain 2nd end

Style Designator

Angle flanged ends

Reference Number Differentiating Characteristics

As differentiated by the valve discharge flow rate requirement

NSN

4820-00-169-5316

Part Number

1553

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 1553 NSN 4820-00-169-5316

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:

77.5

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