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51-08050-55 — PARTS KIT,DIAPHRAGM REPLACEMENT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

51-08050-55: PARTS KIT,DIAPHRAGM REPLACEMENT.

PARTS KIT,DIAPHRAGM REPLACEMENT. Key specifications include end_item_name: AUTOMATIC STREAM HEIGHT CONTROL, end_item_source: 59291, end_item_identification: 1980, nonsupply_items_and_quantities: 59291 911 SPRING 1; 59291 2403 DIAPHRAGM AY 1; 59291 1186 WASHER 1; 59291 1189 BUSHING 1. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-431-9282, 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
51-08050-55
NSN: 4820-00-431-9282
FSC: 4820 — Valves, Nonpowered
CAGE: 59291 — ELKAY MFG CO WATER COOLER DIV (USA)
SPECIFICATIONS
end_item_nameAUTOMATIC STREAM HEIGHT CONTROL
end_item_source59291
component_quantity4
end_item_identification1980
nonsupply_items_and_quantities59291 911 SPRING 1; 59291 2403 DIAPHRAGM AY 1; 59291 1186 WASHER 1; 59291 1189 BUSHING 1
NSN4820-00-431-9282
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 51-08050-55 · 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
•
COMPONENT QUANTITY: 4
•
END ITEM SOURCE: 59291
•
END ITEM NAME: AUTOMATIC STREAM HEIGHT CONTROL
•
NONSUPPLY ITEMS AND QUANTITIES: 59291 911 SPRING 1; 59291 2403 DIAPHRAGM AY 1; 59291 1186 WASHER 1; 59291 1189 BUSHING 1
TECHNICAL CHARACTERISTICS
COMPONENT QUANTITY4
END ITEM SOURCE59291
END ITEM NAMEAUTOMATIC STREAM HEIGHT CONTROL
NONSUPPLY ITEMS AND QUANTITIES59291 911 SPRING 1; 59291 2403 DIAPHRAGM AY 1; 59291 1186 WASHER 1; 59291 1189 BUSHING 1
END ITEM IDENTIFICATION1980
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 51-08050-55?
51-08050-55 is a PARTS KIT,DIAPHRAGM REPLACEMENT.
What is the NSN for 51-08050-55?
51-08050-55 is cataloged in the U.S. Government catalog under NSN 4820-00-431-9282. 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.