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Technical Data Sheet
PartsTable / COMPONENT / N-552
N-552 ✓ 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 DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include filter: NOT INCLUDED, material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE, body_style: STRAIGHT THRU, temp_rating: 180.0 FAHRENHEIT MAXIMUM DEGF, hole_diameter: 0.344 INCHES NOMINAL IN, furnished_items: UNION NUT AND TAILPIECE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-165-9668, 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
N-552
NSN: 4820-01-165-9668
FSC: 4820
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
filterNOT INCLUDED
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE
body_styleSTRAIGHT THRU
temp_rating180.0 FAHRENHEIT MAXIMUM DEGF
hole_diameter0.344 INCHES NOMINAL IN
furnished_itemsUNION NUT AND TAILPIECE
pressure_rating250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
regulation_typeAUTOMATIC DOUBLE STAGE
outside_diameter6.000 INCHES NOMINAL IN
special_featuresSEAT MATERIAL: NICKEL ALUMINUM BRONZE,ASTM B-150
style_designatorFLAT
valve_stem_designDOUBLE SEAT
NSN4820-01-165-9668
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: N-552 · 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
•
HOLE DIAMETER: 0.344 INCHES NOMINAL IN
•
TEMP RATING: 180.0 FAHRENHEIT NOMINAL DEGF
•
MEDIA FOR WHICH DESIGNED: WATER
•
MATERIAL THICKNESS: 0.125 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 6.000 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.625 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT
•
BOLT CIRCLE DIAMETER: 5.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HOLE DIAMETER0.344 INCHES NOMINAL IN
TEMP RATING180.0 FAHRENHEIT NOMINAL DEGF
MEDIA FOR WHICH DESIGNEDWATER
MATERIAL THICKNESS0.125 INCHES NOMINAL IN
OUTSIDE DIAMETER6.000 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.625 INCHES NOMINAL IN
STYLE DESIGNATORFLAT
BOLT CIRCLE DIAMETER5.375 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
BOLT HOLE QUANTITY8
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
N-750Interchangeable
interchangeable cross-reference
interchangeable
271-11023P1Interchangeable
interchangeable cross-reference
interchangeable
4913316-46Interchangeable
interchangeable cross-reference
interchangeable
101182Interchangeable
interchangeable cross-reference
interchangeable
N75047PF500VInterchangeable
interchangeable cross-reference
interchangeable
6957ED14-1AWITH9104H3959Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N-552?
N-552 is a DIAPHRAGM,VALVE,FLAT.
What parts can replace N-552?
There are 24 known substitutes for N-552: N-750, 271-11023P1, 4913316-46 and 21 more. Substitute compatibility should be verified for your specific system.
Is N-552 still available?
N-552 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026