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Technical Data Sheet
PartsTable / COMPONENT / 178131
178131 ✓ 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 SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 922 BODY, valve_size: 3.000 INCHES IN, bonnet_type: PACKING RETAINING, flange_shape: ROUND WITH HOLES ALL ENDS, connection_type: FLANGE ALL ENDS, offset_distance: 0.562 INCHES IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-225-8919, 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
178131
NSN: 4820-01-225-8919
FSC: 4820
CAGE: 91643 — SERVICE BRASS AND ALUMINUM FOUNDRY CO, INC. DBA SERVICE BRASS FITTINGS (USA)
SPECIFICATIONS
materialCOPPER ALLOY 922 BODY
valve_size3.000 INCHES IN
bonnet_typePACKING RETAINING
flange_shapeROUND WITH HOLES ALL ENDS
connection_typeFLANGE ALL ENDS
offset_distance0.562 INCHES IN
style_designatorOFFSET FLANGED ENDS
mounting_positionHORIZONTAL
nominal_thickness0.500 INCHES ALL ENDS IN
bolt_hole_quantity8 ALL ENDS
flange_face_designPLAIN ALL ENDS
flow_control_deviceDISK
NSN4820-01-225-8919
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 178131 · 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
•
FLANGE FACE DESIGN: PLAIN ALL ENDS
•
FLOW CONTROL DEVICE: DISK
•
CONNECTION TYPE: FLANGE ALL ENDS
•
OPERATING PRESSURE: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
VALVE SIZE: 2.500 INCHES IN
•
DISK LOADING METHOD: WEIGHT
•
FACE TO FACE DISTANCE: 9.500 INCHES IN
•
NOMINAL THICKNESS: 0.562 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
FLANGE FACE DESIGNPLAIN ALL ENDS
FLOW CONTROL DEVICEDISK
CONNECTION TYPEFLANGE ALL ENDS
OPERATING PRESSURE150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
VALVE SIZE2.500 INCHES IN
DISK LOADING METHODWEIGHT
FACE TO FACE DISTANCE9.500 INCHES IN
NOMINAL THICKNESS0.562 INCHES ALL ENDS IN
STYLE DESIGNATORSTRAIGHT THRU FLANGED ENDS
NOMINAL OUTSIDE DIAMETER7.000 INCHES ALL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
507-12Interchangeable
interchangeable cross-reference
interchangeable
423LInterchangeable
interchangeable cross-reference
interchangeable
3420643Interchangeable
interchangeable cross-reference
interchangeable
2232977Interchangeable
interchangeable cross-reference
interchangeable
3477295001Interchangeable
interchangeable cross-reference
interchangeable
31051Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 178131?
178131 is a SEAT,VALVE.
What parts can replace 178131?
There are 24 known substitutes for 178131: 507-12, 423L, 3420643 and 21 more. Substitute compatibility should be verified for your specific system.
Is 178131 still available?
178131 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026