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B1-77108 — VALVE,VENT AND DRAIN

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

B1-77108: VALVE,VENT AND DRAIN.

The VALVE,VENT AND DRAIN is a the manufacturer industrial component. Key specifications include criticality_code_justification: ZZZY, reference_number_differentiating_characteristics: NICKEL-COPPER ALLOY. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-753-0093, 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
B1-77108
NSN: 4820-00-753-0093
NIINs: 007530093, 008925934
FSC: 4820 — Valves, Nonpowered
CAGE: 97370 — SPX FLOW US, LLC DBA SPX VALVES & CONTROLS (USA)
SPECIFICATIONS
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsNICKEL-COPPER ALLOY
NSN4820-00-753-0093
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: B1-77108 · 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
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: NICKEL-COPPER ALLOY
TECHNICAL CHARACTERISTICS
CRITICALITY CODE JUSTIFICATIONZZZY
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSNICKEL-COPPER ALLOY
SUBSTITUTES & CROSS-REFERENCES 3
30-1489PC1-2-4-5-10T025-38T040Reference document
Same NSN cross-reference
Reference document — Secondary reference
30-1489Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
30-1489 MONELReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Demilitarization required (F)
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FREQUENTLY ASKED QUESTIONS
What is B1-77108?
B1-77108 is a VALVE,VENT AND DRAIN.
What parts can replace B1-77108?
There are 3 known substitutes for B1-77108: 30-1489PC1-2-4-5-10T025-38T040, 30-1489, 30-1489 MONEL. Substitute compatibility should be verified for your specific system.
What is the NSN for B1-77108?
B1-77108 is cataloged in the U.S. Government catalog under NSN 4820-00-753-0093. 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.