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571973 — SEMICONDUCTOR DEVICE,THYRISTOR

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

571973: SEMICONDUCTOR DEVICE,THYRISTOR.

The SEMICONDUCTOR DEVICE,THYRISTOR is a the manufacturer industrial component. Key specifications include material: STEEL, ring_style: INTERNAL, thread_class: 2A FOURTH END A, usage_design: INTERNAL, overall_length: 2.560 INCHES MAXIMUM IN, major_thickness: 0.059 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-040-3134, 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
571973
NSN: 4820-00-040-3134
NIINs: 000403134, 001377306, 002632711
FSC: 4820 — Valves, Nonpowered
CAGE: 31322 — LUTRON ELECTRONICS CO INC (USA)
SPECIFICATIONS
materialSTEEL
ring_styleINTERNAL
thread_class2A FOURTH END A
usage_designINTERNAL
overall_length2.560 INCHES MAXIMUM IN
major_thickness0.059 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
minor_thickness0.045 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN
mounting_methodTHREADED STUD(S)
connection_styleDOUBLE THREADED SECTION BOSS FITTING GASKET WITH LOCKNUT SEALING (BOSS) FOURTH END
outside_diameter1.985 INCHES MINIMUM AND 2.018 INCHES MAXIMUM IN
overall_diameter1.031 INCHES MAXIMUM IN
special_featuresJUNCTION PATTERN ARRANGEMENT: PNPN
NSN4820-00-040-3134
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 571973 · 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
•
FLOW CONTROL DEVICE: POPPET
•
RENEWABLE SEAT RING TYPE: BONDED
•
CONNECTION STYLE: FLARE(TUBE) FIRST END
•
STYLE DESIGNATOR: ANGLE
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.500 INCHES FIRST END IN
•
THREAD DIRECTION: RIGHT-HAND SECOND END
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEPOPPET
RENEWABLE SEAT RING TYPEBONDED
CONNECTION STYLEFLARE(TUBE) FIRST END
CONNECTION STYLEGASKET SEAL(BOSS) SECOND END
CONNECTION STYLEDOUBLE THREADED SECTION BOSS FITTING GASKET WITH LOCKNUT SEALING (BOSS) FOURTH END
STYLE DESIGNATORANGLE
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES FIRST END IN
THREAD DIRECTIONRIGHT-HAND SECOND END
THREAD DIRECTIONRIGHT-HAND THIRD END
THREAD DIRECTIONRIGHT-HAND FIRST END
SUBSTITUTES & CROSS-REFERENCES 2
222784Reference document
Same NSN cross-reference
Reference document — Secondary reference
906004Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 571973?
571973 is a SEMICONDUCTOR DEVICE,THYRISTOR.
What parts can replace 571973?
There are 2 known substitutes for 571973: 222784, 906004. Substitute compatibility should be verified for your specific system.
What is the NSN for 571973?
571973 is cataloged in the U.S. Government catalog under NSN 4820-00-040-3134. This indicates validated use in U.S. government and defense supply chains.
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