PartsTable
Technical Data Sheet
20126AS51SS ✓ 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: STEEL COMP 303 PACKING, bonnet_type: INSIDE SPRING, flange_shape: ROUND FIRST END, connection_type: FLANGE FIRST END, style_designator: ANGLE, features_provided: VALVE STEM LOCK SHIELD AND PRESSURE TIGHT OUTLET SIDE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-495-2570, 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
20126AS51SS
NSN: 4820-00-495-2570
FSC: 4820
CAGE: 01343 — ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY (USA)
SPECIFICATIONS
materialSTEEL COMP 303 PACKING
bonnet_typeINSIDE SPRING
flange_shapeROUND FIRST END
connection_typeFLANGE FIRST END
style_designatorANGLE
features_providedVALVE STEM LOCK SHIELD AND PRESSURE TIGHT OUTLET SIDE
flange_face_designRAISED STRAIGHT FIRST END
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_deviceDISK
maximum_operating_temp650.0 FAHRENHEIT SINGLE RESPONSE DEGF
valve_operation_methodAUTOMATIC
NSN4820-00-495-2570
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 20126AS51SS · 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
MAXIMUM OPERATING TEMP: 650.0 FAHRENHEIT SINGLE RESPONSE DEGF
MATERIAL: COBALT ALLOY FLOW CONTROL DEVICE
CONNECTION TYPE: FLANGE FIRST END
CRITICALITY CODE JUSTIFICATION: ZZZY
STYLE DESIGNATOR: ANGLE
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
OPENING PRESSURE SETTING: 2485.0 POUNDS PER SQUARE INCH LBS
ADJUSTABLE PRESSURE RANGE: +2401.0 TO 3000.0 POUNDS PER SQUARE INCH LBS
TECHNICAL CHARACTERISTICS (FLIS)
MAXIMUM OPERATING TEMP650.0 FAHRENHEIT SINGLE RESPONSE DEGF
MATERIALCOBALT ALLOY FLOW CONTROL DEVICE
CONNECTION TYPEFLANGE FIRST END
CRITICALITY CODE JUSTIFICATIONZZZY
STYLE DESIGNATORANGLE
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
OPENING PRESSURE SETTING2485.0 POUNDS PER SQUARE INCH LBS
ADJUSTABLE PRESSURE RANGE+2401.0 TO 3000.0 POUNDS PER SQUARE INCH LBS
VALVE DISCHARGE FLOW RATE74.0 GALLONS PER MINUTE
MATERIALSTEEL COMP 303 BODY LINING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
81464Interchangeable
interchangeable cross-reference
interchangeable
CP-16Interchangeable
interchangeable cross-reference
interchangeable
620Interchangeable
interchangeable cross-reference
interchangeable
C12297Interchangeable
interchangeable cross-reference
interchangeable
110 1-13/32Interchangeable
interchangeable cross-reference
interchangeable
GGG-D-751 TYEInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20126AS51SS?
20126AS51SS is a VALVE,SAFETY RELIEF.
What parts can replace 20126AS51SS?
There are 17 known substitutes for 20126AS51SS: 81464, CP-16, 620 and 14 more. Substitute compatibility should be verified for your specific system.
Is 20126AS51SS still available?
20126AS51SS is currently cancelled.
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