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51740C190 — LEG,SEMITRAILER RETRACTABLE SUPP

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

51740C190: LEG,SEMITRAILER RETRACTABLE SUPP.

LEG,SEMITRAILER RETRACTABLE SUPP. Key specifications include material: STEEL COMP 316, features_provided: UPPER STEM, stem_actuating_end_type: SQUARE, valve_size_for_which_designed: 6.000 INCHES AND 8.000 INCHES IN, valve_type_for_which_designed: BUTTERFLY, material_document_and_classification: AISI 316 ASSN STD SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-961-8280, 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
51740C190
NSN: 4820-00-961-8280
FSC: 4820 — Valves, Nonpowered
CAGE: 1NB39 — DOVER RESOURCES, INC. DIV NORRISEAL (USA)
SPECIFICATIONS
materialSTEEL COMP 316
features_providedUPPER STEM
stem_actuating_end_typeSQUARE
valve_size_for_which_designed6.000 INCHES AND 8.000 INCHES IN
valve_type_for_which_designedBUTTERFLY
material_document_and_classificationAISI 316 ASSN STD SINGLE MATERIAL RESPONSE
NSN4820-00-961-8280
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 51740C190 · 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 TYPE FOR WHICH DESIGNED: BUTTERFLY
•
STEM ACTUATING END TYPE: SQUARE
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI 316 ASSN STD SINGLE MATERIAL RESPONSE
•
FEATURES PROVIDED: UPPER STEM
•
VALVE SIZE FOR WHICH DESIGNED: 6.000 INCHES AND 8.000 INCHES IN
•
MATERIAL: STEEL COMP 316
TECHNICAL CHARACTERISTICS
VALVE TYPE FOR WHICH DESIGNEDBUTTERFLY
STEM ACTUATING END TYPESQUARE
MATERIAL DOCUMENT AND CLASSIFICATIONAISI 316 ASSN STD SINGLE MATERIAL RESPONSE
FEATURES PROVIDEDUPPER STEM
VALVE SIZE FOR WHICH DESIGNED6.000 INCHES AND 8.000 INCHES IN
MATERIALSTEEL COMP 316
SUBSTITUTES & CROSS-REFERENCES 2
740-192Reference document
Same NSN cross-reference
Reference document — Secondary reference
740C190Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 51740C190?
51740C190 is a LEG,SEMITRAILER RETRACTABLE SUPP.
What parts can replace 51740C190?
There are 2 known substitutes for 51740C190: 740-192, 740C190. Substitute compatibility should be verified for your specific system.
What is the NSN for 51740C190?
51740C190 is cataloged in the U.S. Government catalog under NSN 4820-00-961-8280. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.