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1B7989-T0022 — DIAPHRAGM,VALVE,FLAT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

1B7989-T0022: DIAPHRAGM,VALVE,FLAT.

The DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY AND RUBBER SYNTHETIC AND STEEL, hole_diameter: 0.180 INCHES NOMINAL IN, outside_diameter: 2.875 INCHES NOMINAL IN, special_features: CENTER HAS A BRASS INSERT WITH STEEL BACKING PLATE, style_designator: FLAT, material_thickness: 0.027 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-932-4806, 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
1B7989-T0022
NSN: 4820-00-932-4806
FSC: 4820 — Valves, Nonpowered
CAGE: 22508 — FISHER CONTROLS CO INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY AND RUBBER SYNTHETIC AND STEEL
hole_diameter0.180 INCHES NOMINAL IN
outside_diameter2.875 INCHES NOMINAL IN
special_featuresCENTER HAS A BRASS INSERT WITH STEEL BACKING PLATE
style_designatorFLAT
bolt_hole_quantity6
material_thickness0.027 INCHES NOMINAL IN
bolt_circle_diameter2.570 INCHES NOMINAL IN
center_hole_diameter0.062 INCHES NOMINAL IN
NSN4820-00-932-4806
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1B7989-T0022 · 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
•
OUTSIDE DIAMETER: 2.875 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT
•
MATERIAL THICKNESS: 0.027 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 6
•
BOLT CIRCLE DIAMETER: 2.570 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.062 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY AND RUBBER SYNTHETIC AND STEEL
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER2.875 INCHES NOMINAL IN
STYLE DESIGNATORFLAT
MATERIAL THICKNESS0.027 INCHES NOMINAL IN
BOLT HOLE QUANTITY6
BOLT CIRCLE DIAMETER2.570 INCHES NOMINAL IN
SPECIAL FEATURESCENTER HAS A BRASS INSERT WITH STEEL BACKING PLATE
CENTER HOLE DIAMETER0.062 INCHES NOMINAL IN
MATERIALCOPPER ALLOY AND RUBBER SYNTHETIC AND STEEL
HOLE DIAMETER0.180 INCHES NOMINAL IN
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
1B7989Reference 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
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FREQUENTLY ASKED QUESTIONS
What is 1B7989-T0022?
1B7989-T0022 is a DIAPHRAGM,VALVE,FLAT.
What parts can replace 1B7989-T0022?
There is 1 known substitute for 1B7989-T0022: 1B7989. Substitute compatibility should be verified for your specific system.
What is the NSN for 1B7989-T0022?
1B7989-T0022 is cataloged in the U.S. Government catalog under NSN 4820-00-932-4806. 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.