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Technical Data Sheet
PartsTable / COMPONENT / 6B1-11-1
6B1-11-1 ✓ 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: STEEL COMP 8740 OVERALL, first_end_style: CHAMFERED, hardness_rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL, inside_diameter: 0.0535 INCHES MINIMUM AND 0.0735 INCHES MAXIMUM IN, pin_overall_length: 0.430 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN, pin_overall_diameter: 0.2495 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-062-3254, 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
6B1-11-1
NSN: 4820-01-062-3254
FSC: 4820
CAGE: 86185 — MCCANNA INC DBA MARPAC INC (USA)
SPECIFICATIONS
materialSTEEL COMP 8740 OVERALL
first_end_styleCHAMFERED
hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
inside_diameter0.0535 INCHES MINIMUM AND 0.0735 INCHES MAXIMUM IN
pin_overall_length0.430 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN
pin_overall_diameter0.2495 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
first_end_taper_angle43.0 DEGREES MINIMUM AND 47.0 DEGREES MAXIMUM
first_end_taper_length0.020 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
second_end_relationship_with_first_endIDENTICAL
NSN4820-01-062-3254
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 6B1-11-1 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
42016Interchangeable
interchangeable cross-reference
interchangeable
72139Interchangeable
interchangeable cross-reference
interchangeable
160C633004-9Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6B1-11-1?
6B1-11-1 is a SEAT,VALVE.
What parts can replace 6B1-11-1?
There are 3 known substitutes for 6B1-11-1: 42016, 72139, 160C633004-9. Substitute compatibility should be verified for your specific system.
What is the NSN for 6B1-11-1?
6B1-11-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-062-3254. 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