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4820-01-180-6691

Safety Relief Valve

4820011806691 011806691 2021114BM11M 20211

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. View more Safety Relief Valve

Managed by United States

NSN Created on 31 May 1984

Data Last Changed
May 2023

NATO Update Count
5

NATO Data Quality

4820-01-180-6691 VALVE,SAFETY RELIEF 4820011806691 011806691 1/1 — NSN 4820-01-180-6691 (Generic Image) 1/1

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20211 VALVE,SAFETY RELIEF 7 EA NS

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4820-01-180-6691 Safety Relief Valve 4820011806691 011806691

2021114BM11M 20211 A valve designed to automatically release excessive pressures.
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Restrictions 4820-01-180-6691

4820-01-180-6691 is a Safety Relief Valve that has critical features such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined. This item is a US Munitions List or Commerce Control List Item where the Item Manager, Equipment Specialist or Product Specialist must provide special demilitarization instructions. This item is not suspected to be hazardous. This item does not contain a precious metal.

Import and Export 4820-01-180-6691

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End Users 4820-01-180-6691

US Navy (N1HE)
Effective Date:: 1 Apr 1991
Supplementary Receivers:: GG; AMC 3 AMSC P IMC P IMCACTY HX

Approved Sources 4820-01-180-6691

Part Number
Manufacturer
Status
2021114BM11M: 01343 - Anderson Greenwood Lp (Active); Incomplete Reference; RNCC 3 RNVC 1 DAC C
20211: 01343 - Anderson Greenwood Lp (Active); Incomplete Secondary Reference; RNCC 5 RNVC 1 DAC C

Datasheet 4820-01-180-6691

Characteristic
Specifications
FIIG: A046B0
Bonnet Attachment Method [ADST]: Bolted
Bonnet Type [ADSR]: Inside Spring
Criticality Code Justification [CRTL]: Zzzy
Disk Loading Method [ADSU]: Spring
Flow Control Device [ADQU]: Disk Or Stem
Material [MATT]: Copper Alloy Overall
Maximum Operating Pressure [CQGM]: 2500.0 Pounds Per Square Inch Single Response
Reference Number Differentiating Characteristics [ZZZY]: Material Will Be In Accordance With Ships Parts Control Center Activity Hx Quality Control,Manufacturing And Testing Specifications
Valve Operation Method [AQLR]: Automatic

Management Data 4820-01-180-6691

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Effective Date: Organization; Unit of Issue; Unit Price; Qty Unit Pack
Oct 2022: Department of the Navy (DN); EA; Subscribe
Oct 2021: Department of the Navy (DN); EA; Subscribe
Oct 2020: Department of the Navy (DN); EA; Subscribe
Nov 2019: Department of the Navy (DN); EA; Subscribe

MOE: USC; Code; Statement; Order of Use; Jump To Code; Qty Per Assy; UOM; Technical Document; Quantative Expression
Department of the Navy (DN): L; R; Refer To Net Price 9175.00; NET PRICE 9175.00

Navy

Cognizance:

7H

Special Material ID:

X4: Special category of Nuclear Reactor Plant (NRP) material which is procured by NAVICP MECH and technically receipt inspected and certified as ready for use by a naval nuclear shipyard.

Issue, Repair, Requisition Restriction Code:

C0: Critical item. Do not issue. Refer all requests to cognizant manager

Special Material Content:

9: Non-Hazardous or Non-Sensitive Item

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Freight Information 4820-01-180-6691

4820-01-180-6691 has freight characteristics.It has a National Motor Freight Classification (NMFC) of 127220. A Sub NMFC of X. It has a NMFC Description of PRESSURE REG/RED/RELIEF VALVES NOI. 4820-01-180-6691 is rated as class 77.5 when transported by Less-Than Truckload (LTL) freight. 4820-01-180-6691 is rated as class 77.5 when transported by Less-Than Carload (LCL) rail or ocean freight. It has a Uniform Freight Classification (UFC) number of 64490 which rates the freight between FCL and LCL. 4820-01-180-6691 has a variance between NMFC and UFC when transported by rail and the description should be consulted. It has a Water Commodity Code (WCC) of 594 for ocean manifesting and military sealift. 4820-01-180-6691 is not classified as a special type of cargo when transported by water. 4820-01-180-6691 is not a consolidation and does not exceed 84" in any dimension. It should be compatible with a standard 72" Aircraft Cargo Door when transported by air.

Packaging Data 4820-01-180-6691

Responsible Activity
Packaging Data Source: Primary Inventory Control Activity (PICA); Packaging Data does not meet current MIL-STD-2073-1E

Storage Environment: Unheated General Purpose

Item Pack Level (Unpackaged)

Item Size
Item Weight
Characteristics
Weight/Dimensions Category
Fragility
Item Preservation: --; --; --; Over 10lb; Less than 85G; Special Requirement

Unit Pack Level (Packaged)

Quantity per Pack
Unit Size
Unit Weight
Unit Cube
Preservation Method
Cleaning/Drying: --; 18.0" H x 10.0" W x 10.0" L; --; --; --; Any Suitable Process

Preservation Material
Wrapping Material
Cushioning/Dunnage
Cushioning Thickness
Container
Special Marking: No Requirement; No Requirement; Wood Blocking and Bracing, Fasteners, or Steel Strapping, for Tie-down purposes. Rubber tired wheels shall be blocked clear of the floor of the crate or skid and shall not be load bearing; Not Applicable; ASTM-D6880, Class 2, Heavy Duty Wood Box; --

Intermediate Pack Level

Quantity of Unit Packs
Container: --; No Requirement