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Technical Data Sheet
PartsTable / COMPONENT / B9-1U
B9-1U ✓ 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 RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING STEMSTEEL UNS K03504 SEAT, bonnet_type: INSIDE SCREWINSIDE SCREW, connection_type: THREADED INTERNAL PIPE ALL ENDSTHREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN,OPTIONAL END(PIPE) ALL ENDSPLAIN,OPTIONAL END(PIPE) ALL ENDS, style_designator: STRAIGHT THRU, thread_direction: RIGHT-HAND ALL ENDSRIGHT-HAND ALL ENDS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-289-3736, 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
B9-1U
NSN: 4820-00-289-3736
FSC: 4820
CAGE: 96101 — GAS EQUIPMENT ENGINEERING CORPORATION, THE DBA GEECO (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING STEMSTEEL UNS K03504 SEAT
bonnet_typeINSIDE SCREWINSIDE SCREW
connection_typeTHREADED INTERNAL PIPE ALL ENDSTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN,OPTIONAL END(PIPE) ALL ENDSPLAIN,OPTIONAL END(PIPE) ALL ENDS
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND ALL ENDSRIGHT-HAND ALL ENDS
features_providedBONNET PACKINGBONNET PACKING
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
flow_control_deviceSTEM OR STEM OR DISKDISK
nominal_thread_size0.750 INCHES ALL ENDS0.750 INCHES ALL ENDS IN
maximum_operating_temp450.0 FAHRENHEIT SECOND RESPONSE450.0 FAHRENHEIT SECOND RESPONSE DEGF
valve_operation_methodMANUALMANUAL
NSN4820-00-289-3736
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: B9-1U · 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: STEEL CORROSION RESISTING FLOW CONTROL DEVICE
•
STYLE DESIGNATOR: STRAIGHT THRU
•
CONNECTION STYLE: PLAIN,OPTIONAL END(PIPE) ALL ENDSPLAIN,OPTIONAL END(PIPE) ALL ENDS
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A105,GR 2 ASSN STD SINGLE MATERIAL RESPONSE BODY
•
THREAD DIRECTION: RIGHT-HAND ALL ENDSRIGHT-HAND ALL ENDS
•
FEATURES PROVIDED: BONNET PACKINGBONNET PACKING
•
MAXIMUM OPERATING TEMP: 450.0 FAHRENHEIT FIRST RESPONSE450.0 FAHRENHEIT FIRST RESPONSE DEGF
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
STYLE DESIGNATORSTRAIGHT THRU
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) ALL ENDSPLAIN,OPTIONAL END(PIPE) ALL ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A105,GR 2 ASSN STD SINGLE MATERIAL RESPONSE BODY
MATERIALSTEEL CORROSION RESISTING STEM
THREAD DIRECTIONRIGHT-HAND ALL ENDSRIGHT-HAND ALL ENDS
FEATURES PROVIDEDBONNET PACKINGBONNET PACKING
MAXIMUM OPERATING TEMP450.0 FAHRENHEIT FIRST RESPONSE450.0 FAHRENHEIT FIRST RESPONSE DEGF
BONNET ATTACHMENT METHODTHREADEDTHREADED
VALVE OPERATION METHODMANUALMANUAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
987-4Interchangeable
interchangeable cross-reference
interchangeable
987-3Interchangeable
interchangeable cross-reference
interchangeable
WSG4001Interchangeable
interchangeable cross-reference
interchangeable
190-0361-010Interchangeable
interchangeable cross-reference
interchangeable
190-0361Interchangeable
interchangeable cross-reference
interchangeable
6515NCM093183Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B9-1U?
B9-1U is a RELAY,ELECTROMAGNETIC.
What parts can replace B9-1U?
There are 7 known substitutes for B9-1U: 987-4, 987-3, WSG4001 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B9-1U?
B9-1U is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-289-3736. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026