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B4422 REV C — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

B4422 REV C: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, flange_diameter: 1.250 INCHES NOMINAL IN, hardness_rating: 40.0 ROCKWELL A MAXIMUM OVERALL, style_designator: PLAIN FLANGED, body_inside_diameter: 0.660 INCHES NOMINAL IN, body_outside_diameter: 1.135 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-478-2444, 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
B4422 REV C
NSN: 4820-01-478-2444
FSC: 4820 — Valves, Nonpowered
CAGE: 28953 — RIX INDUSTRIES (USA)
SPECIFICATIONS
materialSTEEL OVERALL
flange_diameter1.250 INCHES NOMINAL IN
hardness_rating40.0 ROCKWELL A MAXIMUM OVERALL
style_designatorPLAIN FLANGED
body_inside_diameter0.660 INCHES NOMINAL IN
body_outside_diameter1.135 INCHES NOMINAL IN
end_item_identificationMG-30BD MINIGIN COMPRESSOR
flange_seat_to_disk_end_height0.460 INCHES NOMINAL IN
NSN4820-01-478-2444
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: B4422 REV C · 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
•
FLANGE SEAT TO DISK END HEIGHT: 0.460 INCHES NOMINAL IN
•
FLANGE DIAMETER: 1.250 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 1.135 INCHES NOMINAL IN
•
HARDNESS RATING: 40.0 ROCKWELL A MAXIMUM OVERALL
•
STYLE DESIGNATOR: PLAIN FLANGED
•
BODY INSIDE DIAMETER: 0.660 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.460 INCHES NOMINAL IN
FLANGE DIAMETER1.250 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.135 INCHES NOMINAL IN
HARDNESS RATING40.0 ROCKWELL A MAXIMUM OVERALL
STYLE DESIGNATORPLAIN FLANGED
BODY INSIDE DIAMETER0.660 INCHES NOMINAL IN
END ITEM IDENTIFICATIONMG-30BD MINIGIN COMPRESSOR
MATERIALSTEEL OVERALL
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
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FREQUENTLY ASKED QUESTIONS
What is B4422 REV C?
B4422 REV C is a SEAT,VALVE.
What is the NSN for B4422 REV C?
B4422 REV C is cataloged in the U.S. Government catalog under NSN 4820-01-478-2444. 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.