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66BR4-FS — VALVE,REGULATING,FLUID PRESSURE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

66BR4-FS: VALVE,REGULATING,FLUID PRESSURE.

VALVE,REGULATING,FLUID PRESSURE. Key specifications include material: COPPER ALLOY BODY, body_style: TEE, flow_control_device: DIAPHRAGM, remote_actuation_method: DIAPHRAGM, first_end_connection_type: THREADED INTERNAL PIPE, maximum_inlet_pressure_rating: ERR-060. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-391-7641, 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
66BR4-FS
NSN: 4820-01-391-7641
FSC: 4820 — Valves, Nonpowered
CAGE: 41387 — SIEMENS INDUSTRY, INC. DBA SIEMENS ENERGY DIV PROCESS INDUSTRIES AND DRIVES (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
body_styleTEE
flow_control_deviceDIAPHRAGM
end_connection_quantity3
remote_actuation_methodDIAPHRAGM
first_end_connection_typeTHREADED INTERNAL PIPE
maximum_inlet_pressure_ratingERR-060
second_end_relationship_with_first_endIDENTICAL
NSN4820-01-391-7641
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 66BR4-FS · 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: DIAPHRAGM
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
REMOTE ACTUATION METHOD: DIAPHRAGM
•
BODY STYLE: TEE
•
END CONNECTION QUANTITY: 3
•
FIRST END CONNECTION TYPE: THREADED INTERNAL PIPE
•
MATERIAL: COPPER ALLOY BODY
•
MAXIMUM INLET PRESSURE RATING: ERR-060
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEDIAPHRAGM
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
REMOTE ACTUATION METHODDIAPHRAGM
BODY STYLETEE
END CONNECTION QUANTITY3
FIRST END CONNECTION TYPETHREADED INTERNAL PIPE
MATERIALCOPPER ALLOY BODY
MAXIMUM INLET PRESSURE RATINGERR-060
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 66BR4-FS?
66BR4-FS is a VALVE,REGULATING,FLUID PRESSURE.
What is the NSN for 66BR4-FS?
66BR4-FS is cataloged in the U.S. Government catalog under NSN 4820-01-391-7641. 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.