PartsTable
Technical Data Sheet
Download PDF

2633-561-01 — RESTRICTOR,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

2633-561-01: RESTRICTOR,FLUID FLOW.

The RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 706 BODY, valve_size: 12.000 INCHES IN, design_type: STRAIGHT, overall_length: 17.000 INCHES NOMINAL IN, pressure_rating: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS, end_connection_type: FLANGE ALL CONNECTIONS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-481-1212, 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
2633-561-01
NSN: 4730-01-481-1212
NIINs: 014811212, 014811213, 014811220, 014856167, 014856370, 014856695, 014857318, 014875408, 014875444, 014875445, 014876333, 014876364, 014876756, 014876856, 014876864, 014877195, 014877418, 014877795, 014877806, 014878153, 014884339, 014900964, 014906152, 014906154, 014915491, 014922990, 014945768, 014945777, 014945973, 014974878, 014978033, 015220932, 015253129, 015253135
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialCOPPER ALLOY 706 BODY
valve_size12.000 INCHES IN
design_typeSTRAIGHT
overall_length17.000 INCHES NOMINAL IN
pressure_rating150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
special_featuresWEAPON SYSTEM ESSENTIAL; UNIT HAS 3 RESTRICTOR PLATES, 131 HOLES PER PLATE; END FLANGES HAVE BLEEDER HOLE WITH PLUG AND LANYARD; 5 INCH NPS IN
end_connection_typeFLANGE ALL CONNECTIONS
operating_temp_range-32.0 TO 122.0 FAHRENHEIT DEGF
end_item_identificationSHIP VALVE
flow_rate_and_fluid_type850.0 GALLONS PER MINUTE WATER
end_connection_similarityIDENTICAL
strainer_type_and_quantityPLATE, 2
NSN4730-01-481-1212
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2633-561-01 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
NOMINAL OVERALL WIDTH: 6.000 INCHES IN
•
NOMINAL OVERALL LENGTH: 24.630 INCHES IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC 1ST MATERIAL RESPONSE
•
SHAPE: RECTANGULAR
•
MATERIAL: COPPER ALLOY
TECHNICAL CHARACTERISTICS
NOMINAL OVERALL WIDTH6.000 INCHES IN
NOMINAL OVERALL LENGTH24.630 INCHES IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC 1ST MATERIAL RESPONSE
SHAPERECTANGULAR
SPECIAL FEATURESINCLUDES ROD, SELF LOCKING NUTS AND A TOTAL OF 50 PLATES (P/N 801-6640811)
END ITEM IDENTIFICATIONNHA P/N 801-6640811 PC 211-50 RESTRICTOR FLUID, E.I. LOS ANGELES CLASS SSN (688) CASSCADE ORIFICE
MATERIALCOPPER ALLOY
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 4
14-D-091Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
2633-561-01 PC 219Reference document
Same NSN cross-reference
Reference document — Secondary reference
801-6640811Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
801-6640811 PC 219Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy 2633-561-01?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 2633-561-01?
2633-561-01 is a RESTRICTOR,FLUID FLOW.
What parts can replace 2633-561-01?
There are 4 known substitutes for 2633-561-01: 14-D-091, 2633-561-01 PC 219, 801-6640811 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2633-561-01?
2633-561-01 is cataloged in the U.S. Government catalog under NSN 4730-01-481-1212. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 2633-561-01

✓ 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.