PartsTable
Technical Data Sheet
Download PDF

G-103-138 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

G-103-138: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, seat_angle: 45.0 DEGREES NOMINAL, overall_height: 0.859 INCHES NOMINAL IN, shank_diameter: 0.875 INCHES NOMINAL IN, inside_diameter: 0.578 INCHES NOMINAL IN, outside_diameter: 2.562 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-126-3097, 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
G-103-138
NSN: 4820-00-126-3097
FSC: 4820 — Valves, Nonpowered
CAGE: 16062 — M.T. DAVIDSON COMPANY (USA)
SPECIFICATIONS
materialCOPPER ALLOY
seat_angle45.0 DEGREES NOMINAL
overall_height0.859 INCHES NOMINAL IN
shank_diameter0.875 INCHES NOMINAL IN
inside_diameter0.578 INCHES NOMINAL IN
outside_diameter2.562 INCHES NOMINAL IN
style_designatorPOPPET
flange_seat_to_disk_end_height0.562 INCHES NOMINAL IN
NSN4820-00-126-3097
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: G-103-138 · 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
•
SHANK DIAMETER: 0.875 INCHES NOMINAL IN
•
FLANGE SEAT TO DISK END HEIGHT: 0.562 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 2.562 INCHES NOMINAL IN
•
STYLE DESIGNATOR: POPPET
•
SEAT ANGLE: 45.0 DEGREES NOMINAL
•
INSIDE DIAMETER: 0.578 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.875 INCHES NOMINAL IN
FLANGE SEAT TO DISK END HEIGHT0.562 INCHES NOMINAL IN
OVERALL HEIGHT0.859 INCHES NOMINAL IN
OUTSIDE DIAMETER2.562 INCHES NOMINAL IN
STYLE DESIGNATORPOPPET
SEAT ANGLE45.0 DEGREES NOMINAL
INSIDE DIAMETER0.578 INCHES NOMINAL IN
MATERIALCOPPER ALLOY
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 1
107Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy G-103-138?
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 G-103-138?
G-103-138 is a DISK,VALVE.
What parts can replace G-103-138?
There is 1 known substitute for G-103-138: 107. Substitute compatibility should be verified for your specific system.
What is the NSN for G-103-138?
G-103-138 is cataloged in the U.S. Government catalog under NSN 4820-00-126-3097. 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 — G-103-138

✓ 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.