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166-838-29 — DIAPHRAGM,ACTUATOR VALVE,SPECIAL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

166-838-29: DIAPHRAGM,ACTUATOR VALVE,SPECIAL.

DIAPHRAGM,ACTUATOR VALVE,SPECIAL. Key specifications include material: RUBBER AND STEEL, bead_diameter: 2.000 INCHES NOMINAL IN, hole_diameter: 0.345 INCHES NOMINAL IN, overall_height: 0.590 INCHES NOMINAL IN, outside_diameter: 3.625 INCHES NOMINAL IN, style_designator: SPECIAL SHAPED. This part is cataloged in the U.S.

Government catalog under NSN 4810-01-010-9730, 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
166-838-29
NSN: 4810-01-010-9730
FSC: 4810 — Valves, Powered
CAGE: 04845 — AUTOMATIC SWITCH COMPANY DBA ASCO (USA)
SPECIFICATIONS
materialRUBBER AND STEEL
bead_diameter2.000 INCHES NOMINAL IN
hole_diameter0.345 INCHES NOMINAL IN
overall_height0.590 INCHES NOMINAL IN
outside_diameter3.625 INCHES NOMINAL IN
style_designatorSPECIAL SHAPED
bolt_hole_quantity6
material_thickness0.035 INCHES NOMINAL IN
bolt_circle_diameter3.750 INCHES NOMINAL IN
outside_corner_radius0.312 INCHES NOMINAL IN
NSN4810-01-010-9730
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 166-838-29 · 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: 2.000 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 3.625 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SPECIAL SHAPED
•
MATERIAL THICKNESS: 0.035 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 6
•
BOLT CIRCLE DIAMETER: 3.750 INCHES NOMINAL IN
•
OUTSIDE CORNER RADIUS: 0.312 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.590 INCHES NOMINAL IN
BEAD DIAMETER2.000 INCHES NOMINAL IN
OUTSIDE DIAMETER3.625 INCHES NOMINAL IN
STYLE DESIGNATORSPECIAL SHAPED
MATERIAL THICKNESS0.035 INCHES NOMINAL IN
BOLT HOLE QUANTITY6
BOLT CIRCLE DIAMETER3.750 INCHES NOMINAL IN
OUTSIDE CORNER RADIUS0.312 INCHES NOMINAL IN
MATERIALRUBBER AND STEEL
HOLE DIAMETER0.345 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 1
FC166-838-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 166-838-29?
166-838-29 is a DIAPHRAGM,ACTUATOR VALVE,SPECIAL.
What parts can replace 166-838-29?
There is 1 known substitute for 166-838-29: FC166-838-2. Substitute compatibility should be verified for your specific system.
What is the NSN for 166-838-29?
166-838-29 is cataloged in the U.S. Government catalog under NSN 4810-01-010-9730. 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.