PartsTable
Technical Data Sheet
E9921M51M ✓ 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, bonnet_type: INSIDE SPRING, connection_type: UNTHREADED INTERNAL PIPE ALL ENDS, connection_style: SOCKET WITH BRAZING RING ALL ENDS, style_designator: ANGLE, operating_pressure: 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-174-3633, 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
E9921M51M
NSN: 4820-01-174-3633
FSC: 4820
CAGE: 15187 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
bonnet_typeINSIDE SPRING
connection_typeUNTHREADED INTERNAL PIPE ALL ENDS
connection_styleSOCKET WITH BRAZING RING ALL ENDS
style_designatorANGLE
operating_pressure400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_deviceDISK
maximum_operating_temp150.0 FAHRENHEIT SINGLE RESPONSE DEGF
valve_operation_methodAUTOMATIC
bonnet_attachment_methodINTEGRAL
media_for_which_designedWATER-OIL-GAS SINGLE RESPONSE
NSN4820-01-174-3633
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: E9921M51M · 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
BONNET ATTACHMENT METHOD: INTEGRAL
MATERIAL: COPPER ALLOY BODY
ADJUSTABLE PRESSURE RANGE: +91.0 TO 105.0 POUNDS PER SQUARE INCH LBS
RENEWABLE SEAT RING TYPE: THREADED
OPERATING PRESSURE: 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
DISK LOADING METHOD: SPRING
TECHNICAL CHARACTERISTICS (FLIS)
BONNET ATTACHMENT METHODINTEGRAL
MATERIALCOPPER ALLOY BODY
MATERIALNICKEL ALLOY SEAT
ADJUSTABLE PRESSURE RANGE+91.0 TO 105.0 POUNDS PER SQUARE INCH LBS
MATERIALNICKEL ALLOY STEM
RENEWABLE SEAT RING TYPETHREADED
OPERATING PRESSURE400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
DISK LOADING METHODSPRING
VALVE OPERATION METHODAUTOMATIC
CONNECTION TYPEUNTHREADED INTERNAL PIPE ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
9920Interchangeable
interchangeable cross-reference
interchangeable
90-20Interchangeable
interchangeable cross-reference
interchangeable
272SC188Interchangeable
interchangeable cross-reference
interchangeable
C112521Interchangeable
interchangeable cross-reference
interchangeable
09920Interchangeable
interchangeable cross-reference
interchangeable
1329CInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is E9921M51M?
E9921M51M is a VALVE,SAFETY RELIEF.
What parts can replace E9921M51M?
There are 19 known substitutes for E9921M51M: 9920, 90-20, 272SC188 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for E9921M51M?
E9921M51M is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-174-3633. This indicates validated use in U.S. government and defense supply chains.
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