PartsTable
Technical Data Sheet
D3221-1 ✓ 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 CONDUIT ASSEMBLY,METAL,RIGID is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, flow_style: TWO-WAY TWO PORT 90 DEGREE PLUG TURN, seat_angle: 37.0 DEGREES SECOND END, design_type: NONREUSABLE, thread_class: 3A SECOND END A, body_diameter: 2.938 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-373-7772, 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
D3221-1
NSN: 4820-00-373-7772
FSC: 4820
CAGE: 81982 — HYDRO-AIRE AEROSPACE CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
flow_styleTWO-WAY TWO PORT 90 DEGREE PLUG TURN
seat_angle37.0 DEGREES SECOND END
design_typeNONREUSABLE
thread_class3A SECOND END A
body_diameter2.938 INCHES NOMINAL IN
flow_directionOUTSIDE IN
connection_typeTHREADED EXTERNAL TUBE SECOND END
connection_styleINVERTED FLARE(TUBE) FIRST END
style_designatorCYLINDRICAL W/ CONTAINER (RIGID)
thread_directionRIGHT-HAND FIRST END
mounting_facilityTHREADED FASTENER
NSN4820-00-373-7772
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: D3221-1 · 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
CONNECTION TYPE: THREADED INTERNAL TUBE FIRST END
MOUNTING FACILITY: THREADED FASTENER
CONNECTION STYLE: INVERTED FLARE(TUBE) FIRST END
THREAD QUANTITY PER INCH: 12 FIRST END
NOMINAL THREAD SIZE: 1.062 INCHES SECOND END IN
THREAD DIRECTION: RIGHT-HAND FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.750 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
MOUNTING FACILITYTHREADED FASTENER
CONNECTION STYLEINVERTED FLARE(TUBE) FIRST END
THREAD QUANTITY PER INCH12 FIRST END
NOMINAL THREAD SIZE1.062 INCHES SECOND END IN
THREAD DIRECTIONRIGHT-HAND FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.750 INCHES SECOND END IN
CONNECTION TYPETHREADED EXTERNAL TUBE SECOND END
SURFACE TREATMENTANODIZE
THREAD SERIES DESIGNATORUN FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
D32211Interchangeable
interchangeable cross-reference
interchangeable
51518Interchangeable
interchangeable cross-reference
interchangeable
CW518MPInterchangeable
interchangeable cross-reference
interchangeable
3221Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D3221-1?
D3221-1 is a CONDUIT ASSEMBLY,METAL,RIGID.
What parts can replace D3221-1?
There are 4 known substitutes for D3221-1: D32211, 51518, CW518MP and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D3221-1?
D3221-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-373-7772. This indicates validated use in U.S. government and defense supply chains.
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