PartsTable
Technical Data Sheet
1543H ✓ Verified by PartsTable
· GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, connection_type: THREADED EXTERNAL PIPE SECOND END, connection_style: PLAIN,OPTIONAL END(PIPE) FIRST END, style_designator: ANGLE, thread_direction: RIGHT-HAND SECOND END, flow_control_device: DISK. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-235-5638, 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
1543H
NSN: 4820-01-235-5638
FSC: 4820
CAGE: 16497 — DRESSER, INC. DBA DRESSER EQUIPMENT GROUP DIV INDUSTRIAL VALVE OPERATIONS, DRESSE (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
connection_typeTHREADED EXTERNAL PIPE SECOND END
connection_stylePLAIN,OPTIONAL END(PIPE) FIRST END
style_designatorANGLE
thread_directionRIGHT-HAND SECOND END
flow_control_deviceDISK
nominal_thread_size1.500 INCHES SECOND END IN
valve_operation_methodMANUAL
opening_pressure_setting30.0 POUNDS PER SQUARE INCH LBS
thread_series_designatorNPT FIRST END
NSN4820-01-235-5638
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 1543H · 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
MATERIAL: COPPER ALLOY BODY
OPENING PRESSURE SETTING: 30.0 POUNDS PER SQUARE INCH LBS
THREAD SERIES DESIGNATOR: NPT SECOND END
STYLE DESIGNATOR: ANGLE
NOMINAL THREAD SIZE: 1.500 INCHES SECOND END IN
CONNECTION TYPE: THREADED INTERNAL PIPE FIRST END
CONNECTION STYLE: PLAIN (PIPE) SECOND END
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY BODY
OPENING PRESSURE SETTING30.0 POUNDS PER SQUARE INCH LBS
THREAD SERIES DESIGNATORNPT SECOND END
STYLE DESIGNATORANGLE
NOMINAL THREAD SIZE1.500 INCHES SECOND END IN
NOMINAL THREAD SIZE2.000 INCHES FIRST END IN
CONNECTION TYPETHREADED INTERNAL PIPE FIRST END
CONNECTION STYLEPLAIN (PIPE) SECOND END
FLOW CONTROL DEVICEDISK
THREAD SERIES DESIGNATORNPT FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
F3100010PC35Interchangeable
interchangeable cross-reference
interchangeable
HR8836Interchangeable
interchangeable cross-reference
interchangeable
N28260Interchangeable
interchangeable cross-reference
interchangeable
28260Interchangeable
interchangeable cross-reference
interchangeable
51348Interchangeable
interchangeable cross-reference
interchangeable
23462-252ZInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1543H?
1543H is a VALVE,SAFETY RELIEF.
What parts can replace 1543H?
There are 10 known substitutes for 1543H: F3100010PC35, HR8836, N28260 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1543H?
1543H is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-235-5638. This indicates validated use in U.S. government and defense supply chains.
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