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Technical Data Sheet
PartsTable / COMPONENT / 74991B
74991B ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

VALVE,REGULATING,FLUID PRESSURE. Key specifications include material: IRON CAST BODY, outlet_pressure_range: 10.0 TO 100.0 CAMERA MOUNT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-197-9857, 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
74991B
NSN: 4820-01-197-9857
FSC: 4820
CAGE: 86184 — GRISWOLD INDUSTRIES DBA CLA-VAL CO (USA)
SPECIFICATIONS
materialIRON CAST BODY
outlet_pressure_range10.0 TO 100.0 CAMERA MOUNT
NSN4820-01-197-9857
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 74991B · 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
•
MATERIAL: IRON CAST BODY
•
OUTLET PRESSURE RANGE: 10.0 TO 100.0 CAMERA MOUNT
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALIRON CAST BODY
OUTLET PRESSURE RANGE10.0 TO 100.0 CAMERA MOUNT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
749-9-1Interchangeable
interchangeable cross-reference
interchangeable
R0862Interchangeable
interchangeable cross-reference
interchangeable
15704Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 74991B?
74991B is a VALVE,REGULATING,FLUID PRESSURE.
What parts can replace 74991B?
There are 3 known substitutes for 74991B: 749-9-1, R0862, 15704. Substitute compatibility should be verified for your specific system.
Is 74991B still available?
74991B is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026