PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 51.5.22
51.5.22 ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The 51.5.22 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-514-1752, 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
51.5.22
NSN: 4820-01-514-1752
FSC: 4820
CAGE: 15187 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM (USA)
SPECIFICATIONS
Part Number51.5.22
NSN4820-01-514-1752
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 51.5.22 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE SEAT
•
MATERIAL: NICKEL ALLOY SEAT
•
STYLE DESIGNATOR: PLAIN
•
SEAT RADIUS: 5.500 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 45.000 NOMINAL
•
SEATING SURFACE SHAPE: ANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIALNICKEL ALLOY SEAT
STYLE DESIGNATORPLAIN
END ITEM IDENTIFICATION4820-01-514-1698 SAFETY RELIEF VALVE
SEAT RADIUS5.500 INCHES NOMINAL IN
SPECIAL FEATURESFOR USE WITH SALT WATER
SEAT ANGLE IN DEG45.000 NOMINAL
SEATING SURFACE SHAPEANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
51522Interchangeable
interchangeable cross-reference
interchangeable
11RE168Interchangeable
interchangeable cross-reference
interchangeable
N5152-2Interchangeable
interchangeable cross-reference
interchangeable
D1821HInterchangeable
interchangeable cross-reference
interchangeable
J3242397Interchangeable
interchangeable cross-reference
interchangeable
PH3675Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 51.5.22?
51.5.22 is a 51.5.22.
What parts can replace 51.5.22?
There are 12 known substitutes for 51.5.22: 51522, 11RE168, N5152-2 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 51.5.22?
51.5.22 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-514-1752. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026