PartsTable
Technical Data Sheet
A-49120 ✓ Verified by PartsTable
· GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The CYLINDER ASSEMBLY,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, valve_design_control_activity: 15187, valve_size_for_which_designed: 3.500 INCHES IN, valve_type_for_which_designed: RELIEF, material_document_and_classification: QQ-N-288, COMP D FED SPEC SINGLE MATERIAL RESPONSE, valve_model_number_for_which_designed: 2 1/2 H 3 1/2 HNB-H. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-019-2821, 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
A-49120
NSN: 4820-01-019-2821
FSC: 4820
CAGE: 15187 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM (USA)
SPECIFICATIONS
materialNICKEL ALLOY
valve_design_control_activity15187
valve_size_for_which_designed3.500 INCHES IN
valve_type_for_which_designedRELIEF
material_document_and_classificationQQ-N-288, COMP D FED SPEC SINGLE MATERIAL RESPONSE
valve_model_number_for_which_designed2 1/2 H 3 1/2 HNB-H
NSN4820-01-019-2821
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: A-49120 · 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
GENERAL CHARACTERISTICS ITEM DESCRIPTION: CAST STEEL;STANDARD 0.500 IN. DIA,ALSO BRONZE BUSHING W.STUB,ACME THDS 6.500 IN. H,4.250 IN. W;3.750 IN. THK IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONCAST STEEL;STANDARD 0.500 IN. DIA,ALSO BRONZE BUSHING W.STUB,ACME THDS 6.500 IN. H,4.250 IN. W;3.750 IN. THK IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
A49151PC3Interchangeable
interchangeable cross-reference
interchangeable
082791Interchangeable
interchangeable cross-reference
interchangeable
82791Interchangeable
interchangeable cross-reference
interchangeable
A49148Interchangeable
interchangeable cross-reference
interchangeable
HNBJInterchangeable
interchangeable cross-reference
interchangeable
028062Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A-49120?
A-49120 is a CYLINDER ASSEMBLY,VALVE.
What parts can replace A-49120?
There are 21 known substitutes for A-49120: A49151PC3, 082791, 82791 and 18 more. Substitute compatibility should be verified for your specific system.
Is A-49120 still available?
A-49120 is currently cancelled.
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