ASAP Aviation Procurement is pleased to announce that part number 1990 of NSN 4820-01-450-8766 is now available and in stock. We can get you one of the fastest and most competitive quotes on this part. Part number 1990 is a Valve Safety Relief manufactured by Dresser Industries Inc under CAGE Code 16497. Simply fill out the Request for Quote (RFQ) form provided here to get started on your quote. In order to make sure that we get you your quote in a timely manner, please take the time to make sure that all fields are completely filled out, particularly the asterisk-marked (*) fields like Parts Needed By and Quantity (ea).
| NSN | FSC | NIIN | CLS | Hazmat | DEMIL | Cancelled NSN |
|---|---|---|---|---|---|---|
| 4820-01-450-8766 Item Description: Valve Safety Relief | 4820 | 014508766 | 0 | N | ||
| CIIC | HCC | ESD | PMIC | Criticality | ENAC | |
| U | A | |||||
| Part Number | ISC | RNVC | RNCC | HCC | MSDS | SADC |
| 1990 | 5 | 9 | D |
| MRC | Criteria | Characteristic |
|---|---|---|
| AGAV | III END ITEM IDENTIFICATION | STRATEGIC SEALIFT CONVERSION SHIPS CLASS |
| MEDA | MEDIA FOR WHICH DESIGNED | AIR 1ST RESPONSE STEAM 2ND RESPONSE |
| STYL | STYLE DESIGNATOR | C1 ANGLE |
| MATT | MATERIAL | STEEL COMP 316 BODY STEEL COMP 316 FLOW CONTROL DEVICE STEEL COMP 410 STEM |
| AEHZ | MAXIMUM OPERATING TEMP | 400.0 DEG FAHRENHEIT SINGLE RESPONSE |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| AAJF | THREAD DIRECTION | RIGHT-HAND ALL ENDS |
| AEQJ | MINIMUM OPERATING TEMP | -20.0 DEG FAHRENHEIT |
| THSD | THREAD SERIES DESIGNATOR | NPT ALL ENDS |
| CQGM | MAXIMUM OPERATING PRESSURE | 2000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A479, TYPE 316 ASSN STD SINGLE MATERIAL RESPONSE BODY ASTM A479, TYPE 316 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE ASTM A276, TYPE 410, COND T ASSN STD SINGLE MATERIAL RESPONSE STEM |
| ADQU | FLOW CONTROL DEVICE | DISK |
| TMQY | FURNISHED ITEMS AND QUANTITY | 1 LEVER |
| CSDC | OPENING PRESSURE SETTING | 275.0 POUNDS PER SQUARE INCH |
| ADSU | DISK LOADING METHOD | SPRING |
| AWLS | CONNECTION TYPE | THREADED EXTERNAL PIPE 1ST END THREADED INTERNAL PIPE 2ND END |
| CQJX | NOMINAL THREAD SIZE | 1.000 INCHES 1ST END 0.750 INCHES 2ND END |
| FEAT | SPECIAL FEATURES | CARBON STEEL(PHOSPHATED)SPRING;0.110 SQ.IN.ORIFICE AREA |
![]() |
AS9120B and ISO 9001:2015 |
![]() |
Aviation Suppliers Association Member |
![]() |
FAA AC 0056B Accredited |
![]() |
AS 6081:2012 Certification |
![]() |
ESD S20.20-2014 Certification |
Before You Go, Take a look To Our Extensive Range of NSN Parts Catalog. We Provide High Quality NSN Parts with 24/7 Quotation Facility.
Request for Quote