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PartsTable / COMPONENT / 26M77-100-PC21
26M77-100-PC21 ✓ 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, overall_length: 3.380 INCHES NOMINAL IN, inside_diameter: 0.875 INCHES MAXIMUM IN, outside_diameter: 2.932 INCHES MAXIMUM IN, valve_design_control_activity: 80064, valve_size_for_which_designed: 3.000 INCHES IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-092-0343, 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
26M77-100-PC21
NSN: 4820-01-092-0343
FSC: 4820
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialNICKEL ALLOY
overall_length3.380 INCHES NOMINAL IN
inside_diameter0.875 INCHES MAXIMUM IN
outside_diameter2.932 INCHES MAXIMUM IN
valve_design_control_activity80064
valve_size_for_which_designed3.000 INCHES IN
material_document_and_classificationQQ-N-281, CLASS A OR B, HF OR CD FED SPEC SINGLE MATERIAL RESPONSE
valve_model_number_for_which_designed845-2445066
NSN4820-01-092-0343
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 26M77-100-PC21 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281, CLASS A OR B, HF OR CD FED SPEC SINGLE MATERIAL RESPONSE
•
INSIDE DIAMETER: 0.875 INCHES MAXIMUM IN
•
VALVE MODEL NUMBER FOR WHICH DESIGNED: 845-2445066
•
OUTSIDE DIAMETER: 2.932 INCHES MAXIMUM IN
•
VALVE DESIGN CONTROL ACTIVITY: 80064
•
VALVE SIZE FOR WHICH DESIGNED: 3.000 INCHES IN
•
MATERIAL: NICKEL ALLOY
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281, CLASS A OR B, HF OR CD FED SPEC SINGLE MATERIAL RESPONSE
INSIDE DIAMETER0.875 INCHES MAXIMUM IN
VALVE MODEL NUMBER FOR WHICH DESIGNED845-2445066
OUTSIDE DIAMETER2.932 INCHES MAXIMUM IN
VALVE DESIGN CONTROL ACTIVITY80064
VALVE SIZE FOR WHICH DESIGNED3.000 INCHES IN
OVERALL LENGTH3.380 INCHES NOMINAL IN
MATERIALNICKEL ALLOY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
2620-920X12ASSY11APC4Interchangeable
interchangeable cross-reference
interchangeable
845-2181282-3INInterchangeable
interchangeable cross-reference
interchangeable
845-2445066 ITEM 19Interchangeable
interchangeable cross-reference
interchangeable
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
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 26M77-100-PC21?
26M77-100-PC21 is a RETAINER,DISK,VALVE.
What parts can replace 26M77-100-PC21?
There are 30 known substitutes for 26M77-100-PC21: 2620-920X12ASSY11APC4, 845-2181282-3IN, 845-2445066 ITEM 19 and 27 more. Substitute compatibility should be verified for your specific system.
Is 26M77-100-PC21 still available?
26M77-100-PC21 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026