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PartsTable / COMPONENT / A-49120 PIECE 8
A-49120 PIECE 8 ✓ 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 RETAINER,DISK,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, 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 product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-221-8902, 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 PIECE 8
NSN: 4820-01-221-8902
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
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
NSN4820-01-221-8902
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A-49120 PIECE 8 · 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
•
VALVE DESIGN CONTROL ACTIVITY: 15187
•
MATERIAL: NICKEL ALLOY
•
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
•
VALVE SIZE FOR WHICH DESIGNED: 3.500 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
VALVE DESIGN CONTROL ACTIVITY15187
MATERIALNICKEL ALLOY
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
VALVE SIZE FOR WHICH DESIGNED3.500 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
82001Interchangeable
interchangeable cross-reference
interchangeable
1-210761-3Interchangeable
interchangeable cross-reference
interchangeable
30111Interchangeable
interchangeable cross-reference
interchangeable
W5939092PC24Interchangeable
interchangeable cross-reference
interchangeable
41W3249-825Interchangeable
interchangeable cross-reference
interchangeable
7077153Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A-49120 PIECE 8?
A-49120 PIECE 8 is a RETAINER,DISK,VALVE.
What parts can replace A-49120 PIECE 8?
There are 17 known substitutes for A-49120 PIECE 8: 82001, 1-210761-3, 30111 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A-49120 PIECE 8?
A-49120 PIECE 8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-221-8902. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026