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178724 — DIAPHRAGM,VALVE,FLAT

✓ Government record, cited
Hama · MRO · MRO_GENERAL
PRODUCT OVERVIEW

178724: DIAPHRAGM,VALVE,FLAT.

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- Flexible cover for perfect all-round protection - Non-slip surface provides a comfortable grip This part is cataloged in the U.S. Government catalog under NSN 4820-00-447-1120, 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
MRO→ MRO_GENERAL→ 178724
NSN: 4820-00-447-1120
NIINs: 004471120, 015868662
FSC: 4820 — Valves, Nonpowered
CAGE: 92392 — ALLIS-CHALMERS CORP (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC
terminal_typeQUICK DISCONNECT, MALE
overall_length1.600 INCHES NOMINAL IN
proof_pressure250.00 POUNDS PER SQUARE INCH LBS
mounting_methodTHREADED BUSHING
outside_diameter1.532 INCHES NOMINAL IN
style_designatorCYLINDRICAL
material_thickness0.027 INCHES NOMINAL IN
width_across_flats1.000 INCHES NOMINAL IN
nominal_thread_size0.500 INCHES SINGLE PRESSURE CONNECTION IN
center_hole_diameter0.180 INCHES NOMINAL IN
pressure_switch_typeDIFFERENTIAL
NSN4820-00-447-1120
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 178724 · Hama ⚠ 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: 1.532 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT
•
MATERIAL THICKNESS: 0.027 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.180 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER1.532 INCHES NOMINAL IN
STYLE DESIGNATORFLAT
MATERIAL THICKNESS0.027 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.180 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
SUBSTITUTES & CROSS-REFERENCES 3
213227Reference document
Same NSN cross-reference
Reference document — Secondary reference
15566P11Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
137137R1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 178724?
178724 is a DIAPHRAGM,VALVE,FLAT manufactured by Hama. It is classified as a MRO (MRO_GENERAL).
What parts can replace 178724?
There are 3 known substitutes for 178724: 213227, 15566P11, 137137R1. Substitute compatibility should be verified for your specific system.
What is the NSN for 178724?
178724 is cataloged in the U.S. Government catalog under NSN 4820-00-447-1120. 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.