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PartsTable / COMPONENT / 20235Z51M
20235Z51M ✓ 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, connection_type: UNTHREADED INTERNAL PIPE ALL ENDS, connection_style: GASKET SEAL (PIPE) ALL ENDS, style_designator: ANGLE, operating_pressure: 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, disk_loading_method: SPRING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-050-7156, 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
20235Z51M
NSN: 4820-01-050-7156
FSC: 4820
CAGE: 01343 — ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY (USA)
SPECIFICATIONS
materialNICKEL ALLOY SEAT
connection_typeUNTHREADED INTERNAL PIPE ALL ENDS
connection_styleGASKET SEAL (PIPE) ALL ENDS
style_designatorANGLE
operating_pressure600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_deviceDISK
maximum_operating_temp165.0 FAHRENHEIT SINGLE RESPONSE DEGF
valve_operation_methodAUTOMATIC
adjustable_pressure_range+501.0 TO 600.0 POUNDS PER SQUARE INCH LBS
nominal_pipe_size_accommodated0.250 INCHES ALL ENDS IN
material_document_and_classificationQQ-C-390,ALLOY D4/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY
NSN4820-01-050-7156
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 20235Z51M · 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
•
VALVE OPERATION METHOD: AUTOMATIC
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.250 INCHES ALL ENDS IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-390,ALLOY D4/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY
•
DISK LOADING METHOD: SPRING
•
ADJUSTABLE PRESSURE RANGE: +501.0 TO 600.0 POUNDS PER SQUARE INCH LBS
•
MATERIAL: COPPER ALLOY BODY
•
CONNECTION STYLE: GASKET SEAL (PIPE) ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
VALVE OPERATION METHODAUTOMATIC
NOMINAL PIPE SIZE ACCOMMODATED0.250 INCHES ALL ENDS IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390,ALLOY D4/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY
DISK LOADING METHODSPRING
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281,CLASS A FED SPEC SINGLE MATERIAL RESPONSE SEAT
ADJUSTABLE PRESSURE RANGE+501.0 TO 600.0 POUNDS PER SQUARE INCH LBS
MATERIALCOPPER ALLOY BODY
CONNECTION STYLEGASKET SEAL (PIPE) ALL ENDS
MAXIMUM OPERATING TEMP165.0 FAHRENHEIT SINGLE RESPONSE DEGF
STYLE DESIGNATORANGLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
20186PC18Interchangeable
interchangeable cross-reference
interchangeable
9635PC31Interchangeable
interchangeable cross-reference
interchangeable
9651PC37Interchangeable
interchangeable cross-reference
interchangeable
20-235Interchangeable
interchangeable cross-reference
interchangeable
352-7467Interchangeable
interchangeable cross-reference
interchangeable
M7483200P1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20235Z51M?
20235Z51M is a VALVE,SAFETY RELIEF.
What parts can replace 20235Z51M?
There are 19 known substitutes for 20235Z51M: 20186PC18, 9635PC31, 9651PC37 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20235Z51M?
20235Z51M is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-050-7156. 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