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2-1122FB — VALVE,VENT-CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

2-1122FB: VALVE,VENT-CHECK.

The VALVE,VENT-CHECK is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING SEAT, valve_size: 2.000 INCHES IN, flange_shape: ROUND WITH HOLES ALL ENDS, connection_type: FLANGE ALL ENDS, special_features: SIDE OPENING, BOLTED WITH NEOPRENE GASKET, style_designator: STRAIGHT THRU FLANGED ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-543-0139, 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
2-1122FB
NSN: 4820-01-543-0139
FSC: 4820 — Valves, Nonpowered
CAGE: 79128 — ROBERT H WAGER CO INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING SEAT
valve_size2.000 INCHES IN
flange_shapeROUND WITH HOLES ALL ENDS
connection_typeFLANGE ALL ENDS
special_featuresSIDE OPENING, BOLTED WITH NEOPRENE GASKET
style_designatorSTRAIGHT THRU FLANGED ENDS
flange_face_designPLAIN ALL ENDS
flow_control_deviceBALL
valve_operation_methodAUTOMATIC
end_item_identificationNEW CONSTRUCTION LCS1
part_name_assigned_by_controlling_agencyINLINE VALVE WITH SIDE OPENING
NSN4820-01-543-0139
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 2-1122FB · 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
•
FLOW CONTROL DEVICE: BALL
•
FLANGE SHAPE: ROUND WITH HOLES ALL ENDS
•
FLANGE FACE DESIGN: PLAIN ALL ENDS
•
CONNECTION TYPE: FLANGE ALL ENDS
•
STYLE DESIGNATOR: STRAIGHT THRU FLANGED ENDS
•
VALVE SIZE: 2.000 INCHES IN
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEBALL
FLANGE SHAPEROUND WITH HOLES ALL ENDS
FLANGE FACE DESIGNPLAIN ALL ENDS
CONNECTION TYPEFLANGE ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU FLANGED ENDS
VALVE SIZE2.000 INCHES IN
SPECIAL FEATURESSIDE OPENING, BOLTED WITH NEOPRENE GASKET
PART NAME ASSIGNED BY CONTROLLING AGENCYINLINE VALVE WITH SIDE OPENING
END ITEM IDENTIFICATIONNEW CONSTRUCTION LCS1
MATERIALCOPPER ALLOY BODY
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 2-1122FB?
2-1122FB is a VALVE,VENT-CHECK.
What is the NSN for 2-1122FB?
2-1122FB is cataloged in the U.S. Government catalog under NSN 4820-01-543-0139. 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.