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740B1 — MANIFOLD,EXHAUST

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

740B1: MANIFOLD,EXHAUST.

The MANIFOLD,EXHAUST is a the manufacturer industrial component. Key specifications include material: STEEL. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-203-9392, 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
740B1
NSN: 4820-00-203-9392
NIINs: 002039392, 004199058
FSC: 4820 — Valves, Nonpowered
CAGE: 91511 — AUTO-VALVE, INC (USA)
SPECIFICATIONS
materialSTEEL
NSN4820-00-203-9392
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 740B1 · 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
•
FLOW CONTROL DEVICE: POPPET
•
STYLE DESIGNATOR: STRAIGHT THRU
•
OPERATING PRESSURE: 60.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
•
THREAD DIRECTION: RIGHT-HAND FIRST END
•
NOMINAL THREAD SIZE: 0.562 INCHES FIRST END IN
•
SEAT ANGLE: 37.0 DEGREES FIRST END
•
SURFACE TREATMENT: ANODIZE
•
MEDIA FOR WHICH DESIGNED: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEPOPPET
STYLE DESIGNATORSTRAIGHT THRU
OPERATING PRESSURE60.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
THREAD DIRECTIONRIGHT-HAND FIRST END
NOMINAL THREAD SIZE0.562 INCHES FIRST END IN
SEAT ANGLE37.0 DEGREES FIRST END
SURFACE TREATMENTANODIZE
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON SINGLE RESPONSE
THREAD CLASS3A FIRST END A
THREAD QUANTITY PER INCH18 FIRST END
SUBSTITUTES & CROSS-REFERENCES 1
633971-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 740B1?
740B1 is a MANIFOLD,EXHAUST.
What parts can replace 740B1?
There is 1 known substitute for 740B1: 633971-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 740B1?
740B1 is cataloged in the U.S. Government catalog under NSN 4820-00-203-9392. 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.