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AT517A — VALVE,SAFETY RELIEF

✓ Government record, cited
HPE · GATE VALVE
PRODUCT OVERVIEW

AT517A: VALVE,SAFETY RELIEF.

HP Data Center Environmental Edge Rack Sensor Array contains 3 thermistors to measure rack intake and 3 thermistors to measure rack exhaust. NOTE: One year parts only warranty. NOTE: Must be combined with AT516A Environmental Base Station This part is cataloged in the U.S.

Government catalog under NSN 4820-00-460-4007, 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
AT517A
NSN: 4820-00-460-4007
FSC: 4820 — Valves, Nonpowered
CAGE: 24123 — GAST MFG CORP (USA)
SPECIFICATIONS
materialCOPPER ALLOY SEAT
seat_angle30.0 DEGREES FIRST END
bonnet_typeINSIDE SPRING
connection_typeTHREADED EXTERNAL PIPE FIRST END
connection_styleINVERTED FLARE (PIPE) FIRST END
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND FIRST END
disk_loading_methodSPRING
flow_control_deviceBALL
nominal_thread_size0.250 INCHES FIRST END IN
valve_operation_methodAUTOMATIC
bonnet_attachment_methodTHREADED
NSN4820-00-460-4007
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COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: AT517A · HPE ⚠ 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
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FLOW CONTROL DEVICE: BALL
•
CONNECTION STYLE: INVERTED FLARE (PIPE) FIRST END
•
CONNECTION TYPE: THREADED EXTERNAL PIPE FIRST END
•
STYLE DESIGNATOR: STRAIGHT THRU
•
BONNET TYPE: INSIDE SPRING
•
THREAD DIRECTION: RIGHT-HAND FIRST END
•
NOMINAL THREAD SIZE: 0.250 INCHES FIRST END IN
•
SEAT ANGLE: 30.0 DEGREES FIRST END
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEBALL
CONNECTION STYLEINVERTED FLARE (PIPE) FIRST END
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST END
STYLE DESIGNATORSTRAIGHT THRU
BONNET TYPEINSIDE SPRING
THREAD DIRECTIONRIGHT-HAND FIRST END
NOMINAL THREAD SIZE0.250 INCHES FIRST END IN
SEAT ANGLE30.0 DEGREES FIRST END
DISK LOADING METHODSPRING
BONNET ATTACHMENT METHODTHREADED
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 1
AF570SReference 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
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FREQUENTLY ASKED QUESTIONS
What is AT517A?
AT517A is a VALVE,SAFETY RELIEF manufactured by HPE.
What parts can replace AT517A?
There is 1 known substitute for AT517A: AF570S. Substitute compatibility should be verified for your specific system.
What is the NSN for AT517A?
AT517A is cataloged in the U.S. Government catalog under NSN 4820-00-460-4007. This indicates validated use in U.S. government and defense supply chains.
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✓ 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.