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PartsTable / COMPONENT / 41-51
41-51 ✓ Verified by PartsTable
Giochi Preziosi · 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

ADAPTER,STRAIGHT,PIPE TO GAS FIT. Key specifications include color: BLACK, width: 0.250 INCHES NOMINAL TIP IN, length: 1.500 INCHES NOMINAL BLADE IN, material: STEEL BLADE, thickness: 0.037 INCHES NOMINAL TIP IN, body_style: BARRIER TYPE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-343-6970, 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
41-51
NSN: 4820-00-343-6970
FSC: 4820
CAGE: 75954 — KUNKLE INDUSTRIES INC LONERGAN VALVE DIV (USA)
SPECIFICATIONS
colorBLACK
width0.250 INCHES NOMINAL TIP IN
length1.500 INCHES NOMINAL BLADE IN
materialSTEEL BLADE
thickness0.037 INCHES NOMINAL TIP IN
body_styleBARRIER TYPE
duty_cycleCONTINUOUS
head_styleBINDING
lens_colorGREEN SINGLE LIGHT FIRST POSITION HORIZONTAL
seat_angle30.0 DEGREES SECOND END
head_height0.095 INCHES MINIMUM AND 0.105 INCHES MAXIMUM IN
shank_shapeROUND
NSN4820-00-343-6970
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 41-51 · Giochi Preziosi ⚠ 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
•
THREAD CLASS: 2A SINGLE THREADED PORTION A
•
THREAD SERIES DESIGNATOR: UNS SINGLE THREADED PORTION
•
MATERIAL: NICKEL ALLOY OR COPPER ALLOY OVERALL
•
STYLE DESIGNATOR: PLAIN THREADED
•
BODY INSIDE DIAMETER: 0.438 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 18 SINGLE THREADED PORTION
•
SEATING SURFACE SHAPE: FLAT
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2A SINGLE THREADED PORTION A
OVERALL HEIGHT0.594 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNS SINGLE THREADED PORTION
MATERIALNICKEL ALLOY OR COPPER ALLOY OVERALL
STYLE DESIGNATORPLAIN THREADED
BODY INSIDE DIAMETER0.438 INCHES NOMINAL IN
THREAD QUANTITY PER INCH18 SINGLE THREADED PORTION
SEATING SURFACE SHAPEFLAT
NOMINAL THREAD SIZE0.875 INCHES SINGLE THREADED PORTION IN
THREAD LENGTH0.469 INCHES NOMINAL SINGLE THREADED PORTION IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
4151Interchangeable
interchangeable cross-reference
interchangeable
12293AInterchangeable
interchangeable cross-reference
interchangeable
3737199-1Interchangeable
interchangeable cross-reference
interchangeable
801057-004Interchangeable
interchangeable cross-reference
interchangeable
604-4Interchangeable
interchangeable cross-reference
interchangeable
11241256-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 41-51?
41-51 is a ADAPTER,STRAIGHT,PIPE TO GAS FIT manufactured by Giochi Preziosi.
What parts can replace 41-51?
There are 15 known substitutes for 41-51: 4151, 12293A, 3737199-1 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 41-51?
41-51 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-343-6970. 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