The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-722-1759, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-722-1759
Item Name
Valve,relief,pressure and Temper
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5360-01-722-779021494001KPOSSIBLE MATCH
SPRING,HELICAL,COMPRESSION
Possible match (shared part number)Griswold Industries Dba Cla-Val Co
4820-01-722-999337150APOSSIBLE MATCH
RETAINER,DISK,VALVE
Possible match (shared part number)Griswold Industries Dba Cla-Val Co
5331-01-723-015100931GPOSSIBLE MATCH
O-RING
Possible match (shared part number)Griswold Industries Dba Cla-Val Co
5331-01-723-085600517DPOSSIBLE MATCH
O-RING
Possible match (shared part number)Griswold Industries Dba Cla-Val Co
4820-01-723-0861214551-01KPOSSIBLE MATCH
VALVE,FLOW CONTROL
Possible match (shared part number)Griswold Industries Dba Cla-Val Co
4820-01-723-086821482201CPOSSIBLE MATCH
SEAT,VALVE
Possible match (shared part number)Griswold Industries Dba Cla-Val Co
5331-01-723-087100509APOSSIBLE MATCH
O-RING
Possible match (shared part number)Griswold Industries Dba Cla-Val Co
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
214550/REV A/PG1
D/9Drawing number reference only
U.S. Government activity
214550-01A
3/2Design control — primary reference
U.S. Government activity
214550 REV A
D/9Drawing number reference only
U.S. Government activity
Related Parts
5360-01-722-7790POSSIBLE MATCH
SPRING,HELICAL,COMPRESSION
21494001K
4820-01-722-9993POSSIBLE MATCH
RETAINER,DISK,VALVE
37150A
5331-01-723-0151POSSIBLE MATCH
O-RING
00931G
5331-01-723-0856POSSIBLE MATCH
O-RING
00517D
4820-01-723-0861POSSIBLE MATCH
VALVE,FLOW CONTROL
214551-01K
4820-01-723-0868POSSIBLE MATCH
SEAT,VALVE
21482201C
5331-01-723-0871POSSIBLE MATCH
O-RING
00509A
Frequently Asked Questions
What is NSN 4820-01-722-1759?
NSN 4820-01-722-1759 is a Valve,relief,pressure and Temper, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-01-722-1759?
7 possible matches (shared part number, not a government interchangeability claim): 5360-01-722-7790, 4820-01-722-9993, 5331-01-723-0151. Verify interchangeability with system specifications before substitution.
What are the specifications of 4820-01-722-1759?
Key specifications for 4820-01-722-1759: Part Name Assigned by Controlling Agency: VALVE, RELIEF 4; End Item Identification: 4" 250 M-2 MIL-PRF FLANGED DIFF. PRESSURE RELIEF VALVE. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-722-1759 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.