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EF8F-12N — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

EF8F-12N: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC O-RING, valve_size: 0.75 INCHES IN, flange_shape: HEXAGON ALL ENDS, nominal_length: 3.23 INCHES ALL ENDS IN, connection_type: FLANGE ALL ENDS, connection_style: FLARE(TUBE) ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-691-8972, 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
EF8F-12N
NSN: 4820-01-691-8972
FSC: 4820 — Valves, Nonpowered
CAGE: 3CJM8 — HY-LOK USA, INC. (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC O-RING
valve_size0.75 INCHES IN
flange_shapeHEXAGON ALL ENDS
nominal_length3.23 INCHES ALL ENDS IN
connection_typeFLANGE ALL ENDS
connection_styleFLARE(TUBE) ALL ENDS
style_designatorSTRAIGHT THRU
flange_face_designPLAIN ALL ENDS
flow_control_devicePOPPET
valve_operation_methodAUTOMATIC
material_document_and_classificationASTM A479 T+316 ASSN STD SINGLE MATERIAL RESPONSE BODY
part_name_assigned_by_controlling_agencyFLOW VALVE
NSN4820-01-691-8972
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: EF8F-12N · 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
•
FLANGE SHAPE: HEXAGON ALL ENDS
•
FLANGE FACE DESIGN: PLAIN ALL ENDS
•
CONNECTION STYLE: FLARE(TUBE) ALL ENDS
•
NOMINAL LENGTH: 3.23 INCHES ALL ENDS IN
•
CONNECTION TYPE: FLANGE ALL ENDS
•
STYLE DESIGNATOR: STRAIGHT THRU
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A479 T+316 ASSN STD SINGLE MATERIAL RESPONSE BODY
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEPOPPET
FLANGE SHAPEHEXAGON ALL ENDS
FLANGE FACE DESIGNPLAIN ALL ENDS
CONNECTION STYLEFLARE(TUBE) ALL ENDS
NOMINAL LENGTH3.23 INCHES ALL ENDS IN
CONNECTION TYPEFLANGE ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A479 T+316 ASSN STD SINGLE MATERIAL RESPONSE BODY
VALVE SIZE0.75 INCHES IN
PART NAME ASSIGNED BY CONTROLLING AGENCYFLOW VALVE
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is EF8F-12N?
EF8F-12N is a VALVE,SAFETY RELIEF.
What is the NSN for EF8F-12N?
EF8F-12N is cataloged in the U.S. Government catalog under NSN 4820-01-691-8972. 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.