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PartsTable / COMPONENT / 2620-920X12 PC3
2620-920X12 PC3 ✓ 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 SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, thread_class: 3A SINGLE THREADED PORTION A, thread_length: 0.795 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 3.500 INCHES NOMINAL IN, style_designator: THREADED FLANGED, seat_angle_in_deg: 30.000 NOMINAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-092-6147, 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
2620-920X12 PC3
NSN: 4820-01-092-6147
FSC: 4820
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
thread_class3A SINGLE THREADED PORTION A
thread_length0.795 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter3.500 INCHES NOMINAL IN
style_designatorTHREADED FLANGED
seat_angle_in_deg30.000 NOMINAL
nominal_thread_size3.516 INCHES SINGLE THREADED PORTION IN
under_flange_height0.810 INCHES NOMINAL IN
seating_surface_shapeANGULAR
thread_quantity_per_inch11-1/2 SINGLE THREADED PORTION
thread_series_designatorUNS SINGLE THREADED PORTION
body_stepped_inside_diameter3.053 INCHES MINIMUM AND 3.063 INCHES MAXIMUM SECOND STEP IN
NSN4820-01-092-6147
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 2620-920X12 PC3 · 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
•
STYLE DESIGNATOR: THREADED FLANGED
•
MATERIAL: NICKEL ALLOY OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281,CL B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD SERIES DESIGNATOR: UNS SINGLE THREADED PORTION
•
BODY STEPPED INSIDE DIAMETER: 2.620 INCHES MINIMUM AND 2.630 INCHES MAXIMUM FIRST STEP IN
•
THREAD LENGTH: 0.795 INCHES NOMINAL SINGLE THREADED PORTION IN
•
SEAT ANGLE IN DEG: 30.000 NOMINAL
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORTHREADED FLANGED
MATERIALNICKEL ALLOY OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281,CL B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATORUNS SINGLE THREADED PORTION
BODY STEPPED INSIDE DIAMETER2.620 INCHES MINIMUM AND 2.630 INCHES MAXIMUM FIRST STEP IN
BODY STEPPED INSIDE DIAMETER3.053 INCHES MINIMUM AND 3.063 INCHES MAXIMUM SECOND STEP IN
THREAD LENGTH0.795 INCHES NOMINAL SINGLE THREADED PORTION IN
SEAT ANGLE IN DEG30.000 NOMINAL
THREAD CLASS3A SINGLE THREADED PORTION A
NOMINAL THREAD SIZE3.516 INCHES SINGLE THREADED PORTION IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
845-2181282 PIECE 28 3 IN.Interchangeable
interchangeable cross-reference
interchangeable
1/2 CHRG50Interchangeable
interchangeable cross-reference
interchangeable
1/2 INCH 52100 GRADE 50Interchangeable
interchangeable cross-reference
interchangeable
C600-045-1250Interchangeable
interchangeable cross-reference
interchangeable
845-2181282Interchangeable
interchangeable cross-reference
interchangeable
26M77-100 PC MK73Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2620-920X12 PC3?
2620-920X12 PC3 is a SEAT,VALVE.
What parts can replace 2620-920X12 PC3?
There are 26 known substitutes for 2620-920X12 PC3: 845-2181282 PIECE 28 3 IN., 1/2 CHRG50, 1/2 INCH 52100 GRADE 50 and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2620-920X12 PC3?
2620-920X12 PC3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-092-6147. 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