PartsTable
Technical Data Sheet
20138G51SS ✓ 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 CORROSION RESISTING STEM, valve_size: 0.500 INCHES IN, bonnet_type: INSIDE SPRING, flange_shape: ROUND WITH HOLES ALL ENDS, connection_type: FLANGE ALL ENDS, style_designator: ANGLE FLANGED ENDS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-192-9561, 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
20138G51SS
NSN: 4820-01-192-9561
FSC: 4820
CAGE: 01343 — ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING STEM
valve_size0.500 INCHES IN
bonnet_typeINSIDE SPRING
flange_shapeROUND WITH HOLES ALL ENDS
connection_typeFLANGE ALL ENDS
style_designatorANGLE FLANGED ENDS
nominal_thickness0.438 INCHES ALL ENDS IN
bolt_hole_quantity4 ALL ENDS
flange_face_designRAISED STRAIGHT ALL ENDS
operating_pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
flow_control_deviceDISK
maximum_operating_temp650.0 FAHRENHEIT SINGLE RESPONSE DEGF
NSN4820-01-192-9561
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 20138G51SS · 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
FLANGE SHAPE: ROUND WITH HOLES ALL ENDS
ADJUSTABLE PRESSURE RANGE: +35.0 TO 44.0 POUNDS PER SQUARE INCH LBS
VALVE SIZE: 0.500 INCHES IN
RAISED FACE NOMINAL HEIGHT: 0.062 INCHES ALL ENDS IN
BOLT CIRCLE NOMINAL DIAMETER: 2.375 INCHES ALL ENDS IN
NOMINAL OUTSIDE DIAMETER: 3.500 INCHES ALL ENDS IN
CONNECTION TYPE: FLANGE ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
MAXIMUM OPERATING TEMP650.0 FAHRENHEIT SINGLE RESPONSE DEGF
FLANGE SHAPEROUND WITH HOLES ALL ENDS
ADJUSTABLE PRESSURE RANGE+35.0 TO 44.0 POUNDS PER SQUARE INCH LBS
VALVE SIZE0.500 INCHES IN
RAISED FACE NOMINAL HEIGHT0.062 INCHES ALL ENDS IN
BOLT CIRCLE NOMINAL DIAMETER2.375 INCHES ALL ENDS IN
NOMINAL OUTSIDE DIAMETER3.500 INCHES ALL ENDS IN
CONNECTION TYPEFLANGE ALL ENDS
OPERATING PRESSURE150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
BONNET ATTACHMENT METHODTHREADED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
HW128-11Interchangeable
interchangeable cross-reference
interchangeable
050004Interchangeable
interchangeable cross-reference
interchangeable
17012R1Interchangeable
interchangeable cross-reference
interchangeable
945-6Interchangeable
interchangeable cross-reference
interchangeable
10099Interchangeable
interchangeable cross-reference
interchangeable
940 1-19/32Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20138G51SS?
20138G51SS is a VALVE,SAFETY RELIEF.
What parts can replace 20138G51SS?
There are 22 known substitutes for 20138G51SS: HW128-11, 050004, 17012R1 and 19 more. Substitute compatibility should be verified for your specific system.
Is 20138G51SS still available?
20138G51SS is currently cancelled.
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