4820-01-646-5998

Pressure And Temperature Relief Valve email this page

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Reference images of this national stock number
Reference of NSN 4820-01-646-5998 Reference of NSN 4820-01-646-5998 Reference of NSN 4820-01-646-5998 Reference of NSN 4820-01-646-5998 Reference of NSN 4820-01-646-5998 Reference of NSN 4820-01-646-5998 Reference of NSN 4820-01-646-5998 Reference of NSN 4820-01-646-5998 Reference of NSN 4820-01-646-5998 Reference of NSN 4820-01-646-5998

Model or part number: 11-878

Pricing & Availability

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About this product
Fully open: 165 deg and below; starts to close: 165-180 deg; fully closed: 180 deg; fluid: mil-h-83282; valve cracking pressure: 40 psid max, at 190-195 deg f; valve to reseat at 30 psid min

Description

Relief Valve NSN 4820-01-646-5998.

pdf NSN 4820-01-646-5998 Datasheet

MRC:
The basic material of which the body is fabricated.AAFZ
Body Material:
Aluminum alloy, qq-a-200/8, alloy 6061, t6
MRC:
Consists of plating,dip,and/or coating that cannot be wiped off. plating and/or coating is any chemical and/or metallic additive,electrochemical,or mild mechanical process which protects the outside surface.AAJP
Outside Surface Treatment:
Anodized, mil-a-8625, type 2
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of the body.AAQL
Body Style:
Straight thru
MRC:
The element, compound,or mixture of which the stem is fabricated,excluding any surface treatment.ABEP
Stem Material:
Aluminum alloy, qq-a-200/8, alloy 6061, t6
MRC:
A value which expresses the degree of heat or cold as applied to the operation,or limitation of operation,of an item.ABJH
Tempurature Rating:
-65.0 degrees fahrenheit and 320.0 degrees fahrenheit
MRC:
The type of service with which the item is designed to be used.ACKL
Media For Which Designed:
Oil
MRC:
The style designation indicating the configuration that most nearly corresponds to the shape of the end flange.ACKT
First End Flange Shape Style:
Oval w/ bolt holes
MRC:
A measurement of the smallest dimension of the first end flange, in distinction from length or width.ACKU
First End Flange Thickness:
0.125 inches
MRC:
A measurement of the longest dimension of the first end flange, in distinction from width.ACKV
First End Flange Length:
1.812 inches
MRC:
A measurement taken at right angles to the length of the first end flange, in distinction from thickness.ACKW
First End Flange Width:
0.875 inches
MRC:
None.ACKX
First End Flange End Radius:
0.250 inches
MRC:
The number of bolt holes provided on the item.ACKZ
First End Bolt Hole Quantity:
2
MRC:
The length of a straight line which passes through the center of a bolt hole,and terminates at the circumference.ACLA
First End Bolt Hole Diameter:
0.221 inches
MRC:
Indicates whether or not the second end is identical to the first end.ACLR
Second End Relationship With First End:
Not identical
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of the end.ACLT
Second End Style Designator:
Grooved
MRC:
The element,compound,or mixture of which the seating surfaces are fabricated.ACSH
Seat Material:
Aluminum alloy, qq-a-200/8, alloy 6061, t6
MRC:
The length of a straight line which passes through the center of the body,and terminates at the outside circumference.ADAR
Body Outside Diameter:
0.798 inches
MRC:
The part that controls the flow through the item.ADQU
Flow Control Device:
Stem and integral disk
MRC:
Indicates the type of temperature control device that actuates the item.AFKX
Tempurature Control Device Type:
Thermostatic
MRC:
None.AFLN
First End Center To Center Distance Between Holes Along Length:
1.312 inches
MRC:
The name assigned to the item by the government agency or commercial organization controlling the design of the item.CXCY
Product Name:
Valve bypass hydr; valve, bypass thermal and pressure
MRC:
--
NIIN:
016465998
MRC:
--
NATO Stock Number:
4820-01-646-5998
MRC:
--
Shelf Life:
N/A
MRC:
--
UOM:
--
MRC:
--
DEMIL:
No
FIIG:
--
FIIG:
A07100
MRC:
--
INC:
16996
MRC:
--
IMM:
AX
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All Products Certified

Factory New, New Material, New Surplus, Overhauled, Serviceable, Repairable, and AS Removed / Used material will be accompanied by a Certificate of Conformance, and any other documents/trace when applicable. We have a 7 year record retention.

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Quality | ISO 9001:2015 + AS9120B

We are committed to quality and follow an AS9120 quality management system. AeroBase Group is HAZMAT certified and registered with DDTC, ITAR, and Aviation Suppliers Association (ASA). All products are 100% inspected.

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Shipping

Delivery of IN-STOCK orders ship same-day when order is placed before 2:00 PM EST.

Delivery dates for NON-STOCK items are estimates based on current backlog and are subject to confirmation at the time of order.

Formal Definition

Government issue definition of NSN 4820-01-646-5998

A valve designed to release under excessive pressure and/or excessive temperature by opening at a predetermined pressure and/or temperature. Thermostatically operated valves close when the pressure is relieved or the temperature is reduced. Fusible plug valves require replacement of the plug. See also valve, safety relief and valve, regulating. Temperature.

Recent Solicitations Most recent solicitations for NSN 4820-01-646-5998

End Date
Solicitation
Qty
Purchase Request
End Date:
2024-03-11
Solicitation:
SPE7MC24T8970
Qty:
5
Purchase Request:
7006538820
End Date:
2023-02-27
Solicitation:
SPE7MC23T6572
Qty:
3
Purchase Request:
7001568852
End Date:
2015-09-09
Solicitation:
SPE7MC15TH664
Qty:
19
Purchase Request:
0060000983

Packaging & Dimensions

MIL-STD codes: http://www.dla.mil/LandandMaritime/.../MILSTD2073Codes.aspx
Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
Container
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
LVL C
Container:
--
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q
LVL_C:
CUSH
MOP
CATEG.
PRES MAT
WRAP MAT
ICQ
THK
TOS
UCL
CUSH DUN:
JC
MOP:
AE
PKG:
PRES MAT:
00
WRAP MAT:
JA
ICQ:
AAA
THK:
D
TOS:
UCL:

Packaging Codes Definitions:

LVL A Code (LVL_A) Q

Packing shall be accomplished in accordance with table c.Ii for the packing level specified. closure, sealing and reinforcement shall be in accordance with applicable specification for shipping container.

LVL B Code (LVL_B) Q

Packing shall be accomplished in accordance with table c.Ii for the packing level specified. closure, sealing and reinforcement shall be in accordance with the appropriate shipping container specification.

Procedure Indicator Code (OPI) O

Options can be exercised as to specific method of preservation or dod approved packaging materials to be used. however, basic preservation method shall be retained, supplemental data shall be complied with, and unit package dimensions shall not be increased by more than one inch. equal or better protection shall be given the item and there shall be no increase in the package cost.

Special Markings Code (SPC_MKG) 00

No special marking.

Method of Preservation (MOP) AE

Seal or plug all openings and preserve by method 10.

Cushion Material (CUSH) JC

Astm-d4727, domestic fiberboard used as pads, cells, die cuts or sleeves.

Preservation Material (PRES_MAT) 00

No requirement.

Import / Export

Schedule B Classification
Schedule B Number
NAIC National Association of Insurance Commissioners
End Use A classification system for U.S. exported and imported merchandise based on principal use rather than the physical characteristics of the merchandise. End-Use codes are assigned by the Bureau of Economic Analysis under the U.S. Department of Commerce.
SITC Commodity classification system defined by the United Nations.
USDA
HITECH
Schedule B:
8481400000
NAICS:
332911
End Use Class:
21180
SITC:
74740
USDA:
1
HITECH:
0

Schedule B Codes Definitions:

Schedule B 8481400000

Safety Or Relief Valves

End Use Code 21180

Industrial Machines, Other

Standard Intl. Trade Class (SITC) 74740

Safety Or Relief Valves

Freight

Universal / National freight and handling information
NMFC
Class
UFC
LTL
LCL
WCC
TCC
SHC
ADC
ACC
NMFC:
127220
NMF Description:
Pressure Reg/red/relief Valves Noi
UFC:
64490
LTL:
77.5
LCL:
--
WCC:
594
TCC:
Z
SHC:
9
ADC:
A
ACC:
V

Freight Codes Definitions:

Cargo Type (TCC) Z

No special type of cargo code applicable.

Water Commodity (WCC) 594

Pumps and parts, (machinery and parts),(less than 35 feet).

Air Commodity (ACC) V

Trailers, vehicles, machinery, shop and warehouse equipment and supplies including special tools and equipment, ground servicing.

Air Dimensions (ADC) A

Shipment is not a consolidation and does not exceed 84 inches in any dimension.

Air Special Handling (SHC) 9

Other or no special handling required (sh)

Manufacturers

This NSN is registered to the following cage codes.
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