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8648-6 — DIAPHRAGM,ACTUATOR VALVE,SPECIAL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

8648-6: DIAPHRAGM,ACTUATOR VALVE,SPECIAL.

DIAPHRAGM,ACTUATOR VALVE,SPECIAL. Key specifications include material: RUBBER, bead_diameter: 0.625 INCHES NOMINAL IN, hole_diameter: 0.290 INCHES NOMINAL IN, outside_diameter: 3.250 INCHES MINIMUM AND 3.375 INCHES MAXIMUM IN, style_designator: SPECIAL SHAPED, bolt_hole_quantity: 11. This part is cataloged in the U.S.

Government catalog under NSN 4810-01-146-1028, 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
8648-6
NSN: 4810-01-146-1028
FSC: 4810 — Valves, Powered
CAGE: 41387 — SIEMENS INDUSTRY, INC. DBA SIEMENS ENERGY DIV PROCESS INDUSTRIES AND DRIVES (USA)
SPECIFICATIONS
materialRUBBER
bead_diameter0.625 INCHES NOMINAL IN
hole_diameter0.290 INCHES NOMINAL IN
outside_diameter3.250 INCHES MINIMUM AND 3.375 INCHES MAXIMUM IN
style_designatorSPECIAL SHAPED
bolt_hole_quantity11
material_thickness0.018 INCHES NOMINAL IN
bolt_circle_diameter2.750 INCHES MINIMUM AND 2.812 INCHES MAXIMUM IN
center_hole_diameter0.250 INCHES NOMINAL IN
NSN4810-01-146-1028
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 8648-6 · 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
•
BEAD DIAMETER: 0.625 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 3.250 INCHES MINIMUM AND 3.375 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SPECIAL SHAPED
•
MATERIAL THICKNESS: 0.018 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 11
•
BOLT CIRCLE DIAMETER: 2.750 INCHES MINIMUM AND 2.812 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 0.250 INCHES NOMINAL IN
•
MATERIAL: RUBBER
TECHNICAL CHARACTERISTICS
BEAD DIAMETER0.625 INCHES NOMINAL IN
OUTSIDE DIAMETER3.250 INCHES MINIMUM AND 3.375 INCHES MAXIMUM IN
STYLE DESIGNATORSPECIAL SHAPED
MATERIAL THICKNESS0.018 INCHES NOMINAL IN
BOLT HOLE QUANTITY11
BOLT CIRCLE DIAMETER2.750 INCHES MINIMUM AND 2.812 INCHES MAXIMUM IN
CENTER HOLE DIAMETER0.250 INCHES NOMINAL IN
MATERIALRUBBER
HOLE DIAMETER0.290 INCHES NOMINAL IN
OTHER ITEMS IN FSC 4810 — Valves, Powered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4810-00-001-1247 4810-00-001-4499 4810-00-001-4531 4810-00-001-4532 4810-00-001-4554 4810-00-001-4555 4810-00-001-4556 4810-00-001-4611
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 8648-6?
8648-6 is a DIAPHRAGM,ACTUATOR VALVE,SPECIAL.
What is the NSN for 8648-6?
8648-6 is cataloged in the U.S. Government catalog under NSN 4810-01-146-1028. 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.