PartsTable
Technical Data Sheet
Download PDF

840975 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

840975: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_height: 0.234 INCHES NOMINAL IN, style_designator: PLAIN THREADED, nominal_thread_size: 0.125 INCHES SINGLE THREADED PORTION IN, body_inside_diameter: 0.078 INCHES NOMINAL IN, seating_surface_shape: FLAT. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-248-0567, 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
840975
NSN: 4820-00-248-0567
FSC: 4820 — Valves, Nonpowered
CAGE: 0E9N0 — DAVID BROWN HYDRAULICS INC DBA HYDRECO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_height0.234 INCHES NOMINAL IN
style_designatorPLAIN THREADED
nominal_thread_size0.125 INCHES SINGLE THREADED PORTION IN
body_inside_diameter0.078 INCHES NOMINAL IN
seating_surface_shapeFLAT
thread_series_designatorNPT SINGLE THREADED PORTION
NSN4820-00-248-0567
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 840975 · 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
•
BODY INSIDE DIAMETER: 0.078 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.125 INCHES SINGLE THREADED PORTION IN
•
MATERIAL: STEEL OVERALL
•
THREAD SERIES DESIGNATOR: NPT SINGLE THREADED PORTION
•
SEATING SURFACE SHAPE: FLAT
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.234 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN THREADED
BODY INSIDE DIAMETER0.078 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.125 INCHES SINGLE THREADED PORTION IN
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORNPT SINGLE THREADED PORTION
SEATING SURFACE SHAPEFLAT
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 840975?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 840975?
840975 is a SEAT,VALVE.
What is the NSN for 840975?
840975 is cataloged in the U.S. Government catalog under NSN 4820-00-248-0567. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 840975

✓ 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.