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4994907 — Technical Data Sheet

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— · 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

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thread_class: 2A SINGLE THREADED PORTION A, thread_length: 0.156 INCHES NOMINAL SINGLE THREADED PORTION IN, overall_height: 0.156 INCHES NOMINAL IN, style_designator: PLAIN THREADED, nominal_thread_size: 0.375 INCHES SINGLE THREADED PORTION IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 4820-00-891-5998, 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
4994907
NSN: 4820-00-891-5998
FSC: 4820
CAGE: 0AHU0 — KALMAR AC INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thread_class2A SINGLE THREADED PORTION A
thread_length0.156 INCHES NOMINAL SINGLE THREADED PORTION IN
overall_height0.156 INCHES NOMINAL IN
style_designatorPLAIN THREADED
nominal_thread_size0.375 INCHES SINGLE THREADED PORTION IN
body_inside_diameter0.125 INCHES NOMINAL IN
seating_surface_shapeFLAT
thread_series_designatorUNF SINGLE THREADED PORTION
NSN4820-00-891-5998
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 4994907 · 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
•
STYLE DESIGNATOR: PLAIN THREADED
•
NOMINAL THREAD SIZE: 0.375 INCHES SINGLE THREADED PORTION IN
•
BODY INSIDE DIAMETER: 0.125 INCHES NOMINAL IN
•
SEATING SURFACE SHAPE: FLAT
•
THREAD CLASS: 2A SINGLE THREADED PORTION A
•
MATERIAL: STEEL OVERALL
•
THREAD LENGTH: 0.156 INCHES NOMINAL SINGLE THREADED PORTION IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORPLAIN THREADED
NOMINAL THREAD SIZE0.375 INCHES SINGLE THREADED PORTION IN
BODY INSIDE DIAMETER0.125 INCHES NOMINAL IN
SEATING SURFACE SHAPEFLAT
THREAD CLASS2A SINGLE THREADED PORTION A
MATERIALSTEEL OVERALL
OVERALL HEIGHT0.156 INCHES NOMINAL IN
THREAD LENGTH0.156 INCHES NOMINAL SINGLE THREADED PORTION IN
THREAD SERIES DESIGNATORUNF SINGLE THREADED PORTION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
BX59InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
90500InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
859InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
302215InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
QQB575F36T0125InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
QQ-B-575InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4994907?
4994907 is a SEAT,VALVE.
What parts can replace 4994907?
There are 18 known substitutes for 4994907: BX59, 90500, 859 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4994907?
4994907 is cataloged in the Federal Logistics Information System under NSN 4820-00-891-5998. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026