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NSN: 4820-00-001-6553
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NSN 4820-00-001-6553 Safety Relief Valve

Manufacturer Part Numbers

Part Number Name Cage Code
A51K56028-1 Valve,safety Relief 61174

Management Codes

CTL: 9B----- (MOE: DN)
SOS: SMS
AAC: Not stocked, centrally procured # (non-stocked items). imm/service centrally managed but not stocked item. procurement will be initiated only after receipt of a requisition.
CIIC:
RC:
QUP: 1
UI: EA
SLC: 0

Freight Codes

NMF Desc: Pressure Reg/red/relief Valves Noi
NMFC: 127220
UFC: 64490
LTL: 77.5
LCL:
WCC: Pumps and parts, (machinery and parts),(less than 35 feet)
TCC: No special type of cargo code applicable
SHC: Other or no special handling required (sh)
ADC: Shipment is not a consolidation and does not exceed 84 inches in any dimension.
ACC: Trailers, vehicles, machinery, shop and warehouse equipment and supplies including special tools and equipment, ground servicing
ASH: No special handling required.

Identification

DEMIL Code: A
DEMIL Integ:
ADPE: )
CRITL: X
ENAC:
ESD: )
HMIC: N
Schedule B: 8481400000 – Safety or relief valves
NIIN: 000016553

Technical Characteristics

Connection Style: External seat for gasket seal (boss) 1st end
Connection Type: Threaded external boss 1st end
Disk Loading Method: Spring
Features Provided: Pressure tight outlet side
Flow Control Device: Poppet
Material: Steel overall
Nominal Outside Diameter Tube Accommodated: 0.875 inches 1st end
Nominal Thread Size: 1.187 inches 1st end
Style Designator: Straight thru
Thread Class: 3a 1st end
Thread Direction: Right-hand 1st end
Thread Quantity Per Inch: 16 1st end
Thread Series Designator: Unj 1st end
Valve Operation Method: Automatic

Questions & Answers

What are the historical prices recorded for this stock number?
No pre-dated pricing for this NSN could be found.
What NATO entities are users of this NSN?
No recorded entities for this stock number.
How is national stock number 4820-00-001-6553 categorized?
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.
Does this item require Demilitarization?
Non-usml/non-ccli - no demil or dod tsc required. department of commerce may impose licensing requirements to certain destinations. (note 9).
Is this item ITAR controlled?
No. This item is not ITAR Controlled.
When was this national stock number assigned to the federal catalog?
Sep 29, 1972