PartsTable
Technical Data Sheet
20254R51M ✓ 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: NICKEL ALLOY SEAT, bonnet_type: INSIDE SPRING, connection_type: UNTHREADED INTERNAL PIPE ALL ENDS, connection_style: SOCKET WITH BRAZING RING ALL ENDS, special_features: PRESSURE SETTING 157 PSI,UNIONS,BORNZE SILVER BRAZING;1 INCH IN, style_designator: ANGLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-161-6426, 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
20254R51M
NSN: 4820-01-161-6426
FSC: 4820
CAGE: 01343 — ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY (USA)
SPECIFICATIONS
materialNICKEL ALLOY SEAT
bonnet_typeINSIDE SPRING
connection_typeUNTHREADED INTERNAL PIPE ALL ENDS
connection_styleSOCKET WITH BRAZING RING ALL ENDS
special_featuresPRESSURE SETTING 157 PSI,UNIONS,BORNZE SILVER BRAZING;1 INCH IN
style_designatorANGLE
operating_pressure460.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
flow_control_deviceDISK
maximum_operating_temp165.0 FAHRENHEIT SINGLE RESPONSE DEGF
valve_operation_methodAUTOMATIC
bonnet_attachment_methodBOLTED
media_for_which_designedWATER-OIL-GAS SINGLE RESPONSE
NSN4820-01-161-6426
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 20254R51M · 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
OPENING PRESSURE SETTING: 157.0 POUNDS PER SQUARE INCH LBS
MATERIAL: NICKEL ALLOY STEM
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-390,ALLOY D4/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY
STYLE DESIGNATOR: ANGLE
NOMINAL PIPE SIZE ACCOMMODATED: 1.000 INCHES ALL ENDS IN
MAXIMUM OPERATING TEMP: 165.0 FAHRENHEIT SINGLE RESPONSE DEGF
VALVE OPERATION METHOD: AUTOMATIC
CONNECTION TYPE: UNTHREADED INTERNAL PIPE ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
OPENING PRESSURE SETTING157.0 POUNDS PER SQUARE INCH LBS
MATERIALNICKEL ALLOY STEM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390,ALLOY D4/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY
STYLE DESIGNATORANGLE
NOMINAL PIPE SIZE ACCOMMODATED1.000 INCHES ALL ENDS IN
MAXIMUM OPERATING TEMP165.0 FAHRENHEIT SINGLE RESPONSE DEGF
VALVE OPERATION METHODAUTOMATIC
CONNECTION TYPEUNTHREADED INTERNAL PIPE ALL ENDS
BONNET ATTACHMENT METHODBOLTED
BONNET TYPEINSIDE SPRING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
S306ABBM120P31WInterchangeable
interchangeable cross-reference
interchangeable
S306CCELBM120P31W1Interchangeable
interchangeable cross-reference
interchangeable
20254Interchangeable
interchangeable cross-reference
interchangeable
8603Interchangeable
interchangeable cross-reference
interchangeable
MM54C02JInterchangeable
interchangeable cross-reference
interchangeable
MM54C02JAInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20254R51M?
20254R51M is a VALVE,SAFETY RELIEF.
What parts can replace 20254R51M?
There are 14 known substitutes for 20254R51M: S306ABBM120P31W, S306CCELBM120P31W1, 20254 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20254R51M?
20254R51M is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-161-6426. This indicates validated use in U.S. government and defense supply chains.
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