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N1974594 — DIAPHRAGM,VALVE,FLAT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

N1974594: DIAPHRAGM,VALVE,FLAT.

The DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include outside_diameter: 6.750 INCHES NOMINAL IN, special_features: MATERIAL: FIBER, style_designator: FLAT, material_thickness: 0.026 INCHES NOMINAL IN, center_hole_diameter: 1.000 INCHES NOMINAL IN, criticality_code_justification: ZZZY. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-036-1699, 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
N1974594
NSN: 4820-00-036-1699
NIINs: 000361699, 015042571
FSC: 4820 — Valves, Nonpowered
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
outside_diameter6.750 INCHES NOMINAL IN
special_featuresMATERIAL: FIBER
style_designatorFLAT
material_thickness0.026 INCHES NOMINAL IN
center_hole_diameter1.000 INCHES NOMINAL IN
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVICP ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATION
NSN4820-00-036-1699
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: N1974594 · 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
•
OUTSIDE DIAMETER: 6.750 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT
•
MATERIAL THICKNESS: 0.026 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 1.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER6.750 INCHES NOMINAL IN
STYLE DESIGNATORFLAT
MATERIAL THICKNESS0.026 INCHES NOMINAL IN
SPECIAL FEATURESMATERIAL: FIBER
CENTER HOLE DIAMETER1.000 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 5
19745Reference document
Same NSN cross-reference
Reference document — Secondary reference
19745-94Reference document
Same NSN cross-reference
Reference document — Secondary reference
8112NPC16Reference document
Same NSN cross-reference
Reference document — Secondary reference
29614N P/N 1974594Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
1JH512PC108Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is N1974594?
N1974594 is a DIAPHRAGM,VALVE,FLAT.
What parts can replace N1974594?
There are 5 known substitutes for N1974594: 19745, 19745-94, 8112NPC16 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for N1974594?
N1974594 is cataloged in the U.S. Government catalog under NSN 4820-00-036-1699. 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.