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SS-XSF8STF8-3 — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

SS-XSF8STF8-3: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include connection_type: THREADED INTERNAL PIPE ALL ENDS, style_designator: STRAIGHT THRU, disk_loading_method: SPRING, flow_control_device: POPPET, valve_operation_method: AUTOMATIC, end_item_identification: MISC PARTS FIRE EXTINGUISING SYSTEM LPD 17.. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-520-5544, 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
SS-XSF8STF8-3
NSN: 4820-01-520-5544
FSC: 4820 — Valves, Nonpowered
CAGE: 3T9T9 — SWAGELOK CO (USA)
SPECIFICATIONS
connection_typeTHREADED INTERNAL PIPE ALL ENDS
style_designatorSTRAIGHT THRU
disk_loading_methodSPRING
flow_control_devicePOPPET
valve_operation_methodAUTOMATIC
end_item_identificationMISC PARTS FIRE EXTINGUISING SYSTEM LPD 17.
part_name_assigned_by_controlling_agencyXS SERIES FLOW VALVE
NSN4820-01-520-5544
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: SS-XSF8STF8-3 · 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
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
•
STYLE DESIGNATOR: STRAIGHT THRU
•
DISK LOADING METHOD: SPRING
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEPOPPET
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU
DISK LOADING METHODSPRING
PART NAME ASSIGNED BY CONTROLLING AGENCYXS SERIES FLOW VALVE
END ITEM IDENTIFICATIONMISC PARTS FIRE EXTINGUISING SYSTEM LPD 17.
VALVE OPERATION METHODAUTOMATIC
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

No substitute or cross-reference records for this part.

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 SS-XSF8STF8-3?
SS-XSF8STF8-3 is a VALVE,CHECK.
What is the NSN for SS-XSF8STF8-3?
SS-XSF8STF8-3 is cataloged in the U.S. Government catalog under NSN 4820-01-520-5544. 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.