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1543G — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

1543G: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, bonnet_type: INSIDE SPRING, connection_type: THREADED EXTERNAL PIPE FIRST END, connection_style: PLAIN (PIPE) FIRST END, style_designator: ANGLE, thread_direction: RIGHT-HAND ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-235-5639, 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
1543G
NSN: 4820-01-235-5639
FSC: 4820 — Valves, Nonpowered
CAGE: 16497 — DRESSER, INC. DBA DRESSER EQUIPMENT GROUP DIV INDUSTRIAL VALVE OPERATIONS, DRESSE (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
bonnet_typeINSIDE SPRING
connection_typeTHREADED EXTERNAL PIPE FIRST END
connection_stylePLAIN (PIPE) FIRST END
style_designatorANGLE
thread_directionRIGHT-HAND ALL ENDS
operating_pressure300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_deviceDISK
nominal_thread_size1.250 INCHES FIRST END IN
maximum_operating_temp406.0 FAHRENHEIT SINGLE RESPONSE DEGF
valve_operation_methodAUTOMATIC OR MANUAL
NSN4820-01-235-5639
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1543G · 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: DISK
•
FURNISHED ITEMS AND QUANTITY: 1 LEVER
•
CONNECTION STYLE: PLAIN,OPTIONAL END(PIPE) SECOND END
•
CONNECTION TYPE: THREADED INTERNAL PIPE SECOND END
•
STYLE DESIGNATOR: ANGLE
•
OPERATING PRESSURE: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEDISK
FURNISHED ITEMS AND QUANTITY1 LEVER
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) SECOND END
CONNECTION STYLEPLAIN (PIPE) FIRST END
CONNECTION TYPETHREADED INTERNAL PIPE SECOND END
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST END
STYLE DESIGNATORANGLE
OPERATING PRESSURE300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
BONNET TYPEINSIDE SPRING
THREAD DIRECTIONRIGHT-HAND ALL ENDS
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 1543G?
1543G is a VALVE,SAFETY RELIEF.
What is the NSN for 1543G?
1543G is cataloged in the U.S. Government catalog under NSN 4820-01-235-5639. This indicates validated use in U.S. government and defense supply chains.
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