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20058Q51B — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

20058Q51B: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: BRONZE BODY, valve_operation_method: AUTOMATIC, adjustable_pressure_range: +136.0 TO 150.0 POUNDS PER SQUARE INCH LBS, nominal_pipe_size_accommodated: 0.500 INCHES FIRST END IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-185-8083, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
20058Q51B
NSN: 4820-01-185-8083
FSC: 4820 — Valves, Nonpowered
CAGE: 15187 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM (USA)
SPECIFICATIONS
materialBRONZE BODY
valve_operation_methodAUTOMATIC
adjustable_pressure_range+136.0 TO 150.0 POUNDS PER SQUARE INCH LBS
nominal_pipe_size_accommodated0.500 INCHES FIRST END IN
NSN4820-01-185-8083
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 20058Q51B · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.500 INCHES FIRST END IN
•
ADJUSTABLE PRESSURE RANGE: +136.0 TO 150.0 POUNDS PER SQUARE INCH LBS
•
MATERIAL: BRONZE BODY
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES FIRST END IN
ADJUSTABLE PRESSURE RANGE+136.0 TO 150.0 POUNDS PER SQUARE INCH LBS
MATERIALBRONZE BODY
VALVE OPERATION METHODAUTOMATIC
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 1
8002 Q 51 BReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 20058Q51B?
20058Q51B is a VALVE,SAFETY RELIEF.
What parts can replace 20058Q51B?
There is 1 known substitute for 20058Q51B: 8002 Q 51 B. Substitute compatibility should be verified for your specific system.
What is the NSN for 20058Q51B?
20058Q51B is cataloged in the U.S. Government catalog under NSN 4820-01-185-8083. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.