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3311993 — POPPET AND SEAT ASSEMBLY

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

3311993: POPPET AND SEAT ASSEMBLY.

The POPPET AND SEAT ASSEMBLY is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: MATERIAL STEEL 440C. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-159-5874, 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
3311993
NSN: 4820-01-159-5874
FSC: 4820 — Valves, Nonpowered
CAGE: 77068 — ALLIED-SIGNAL INC DBA ALLIED-SIGNAL AEROSPACE CO ELECTRODYNAMICS DIV (USA)
SPECIFICATIONS
general_characteristics_item_descriptionMATERIAL STEEL 440C
NSN4820-01-159-5874
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 3311993 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: MATERIAL STEEL 440C
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONMATERIAL STEEL 440C
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 2
3311993 ITEM 30Reference document
Same NSN cross-reference
Reference document — Secondary reference
3329504Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3311993?
3311993 is a POPPET AND SEAT ASSEMBLY.
What parts can replace 3311993?
There are 2 known substitutes for 3311993: 3311993 ITEM 30, 3329504. Substitute compatibility should be verified for your specific system.
What is the NSN for 3311993?
3311993 is cataloged in the U.S. Government catalog under NSN 4820-01-159-5874. This indicates validated use in U.S. government and defense supply chains.
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