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651-126-1 — VALVE,CHECK,OXYGEN SYSTEM

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

651-126-1: VALVE,CHECK,OXYGEN SYSTEM.

The VALVE,CHECK,OXYGEN SYSTEM is a the manufacturer industrial component. Key specifications include connection_type: UNTHREADED EXTERNAL HOSE ALL ENDS, connection_style: PLAIN (HOSE) ALL ENDS, mounting_position: HORIZONTAL OR VERTICAL, disk_loading_method: WEIGHTWEIGHT, valve_operation_method: AUTOMATIC, media_for_which_designed: OXYGEN, GASEOUS SINGLE RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-283-3814, 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
651-126-1
NSN: 4820-01-283-3814
FSC: 4820 — Valves, Nonpowered
CAGE: 53655 — AVOX SYSTEMS INC DBA AVOX SYSTEMS INC (USA)
SPECIFICATIONS
connection_typeUNTHREADED EXTERNAL HOSE ALL ENDS
connection_stylePLAIN (HOSE) ALL ENDS
mounting_positionHORIZONTAL OR VERTICAL
disk_loading_methodWEIGHTWEIGHT
valve_operation_methodAUTOMATIC
media_for_which_designedOXYGEN, GASEOUS SINGLE RESPONSE
NSN4820-01-283-3814
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 651-126-1 · 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
•
CONNECTION STYLE: PLAIN (HOSE) ALL ENDS
•
MOUNTING POSITION: HORIZONTAL OR VERTICAL
•
CONNECTION TYPE: UNTHREADED EXTERNAL HOSE ALL ENDS
•
DISK LOADING METHOD: WEIGHTWEIGHT
•
MEDIA FOR WHICH DESIGNED: OXYGEN, GASEOUS SINGLE RESPONSE
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN (HOSE) ALL ENDS
MOUNTING POSITIONHORIZONTAL OR VERTICAL
CONNECTION TYPEUNTHREADED EXTERNAL HOSE ALL ENDS
DISK LOADING METHODWEIGHTWEIGHT
MEDIA FOR WHICH DESIGNEDOXYGEN, GASEOUS SINGLE RESPONSE
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 651-126-1?
651-126-1 is a VALVE,CHECK,OXYGEN SYSTEM.
What is the NSN for 651-126-1?
651-126-1 is cataloged in the U.S. Government catalog under NSN 4820-01-283-3814. 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.