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Technical Data Sheet
PartsTable / COMPONENT / 8571PC25
8571PC25 ✓ 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: NICKEL ALLOY SEAT, thread_class: 2A SINGLE THREADED PORTION A, thread_length: 2.000 INCHES NOMINAL SINGLE THREADED PORTION IN, overall_height: 2.375 INCHES NOMINAL IN, style_designator: PLAIN THREADED, seat_angle_in_deg: 45.000 NOMINAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-588-2721, 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
8571PC25
NSN: 4820-00-588-2721
FSC: 4820
CAGE: 01343 — ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY (USA)
SPECIFICATIONS
materialNICKEL ALLOY SEAT
thread_class2A SINGLE THREADED PORTION A
thread_length2.000 INCHES NOMINAL SINGLE THREADED PORTION IN
overall_height2.375 INCHES NOMINAL IN
style_designatorPLAIN THREADED
seat_angle_in_deg45.000 NOMINAL
nominal_thread_size2.625 INCHES SINGLE THREADED PORTION IN
body_inside_diameter1.500 INCHES NOMINAL IN
seating_surface_shapeANGULAR
thread_quantity_per_inch14 SINGLE THREADED PORTION
thread_series_designatorUNS SINGLE THREADED PORTION
NSN4820-00-588-2721
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 8571PC25 · 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
•
THREAD SERIES DESIGNATOR: UNS SINGLE THREADED PORTION
•
STYLE DESIGNATOR: PLAIN THREADED
•
MATERIAL: NICKEL ALLOY SEAT
•
BODY INSIDE DIAMETER: 1.500 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 2.625 INCHES SINGLE THREADED PORTION IN
•
THREAD QUANTITY PER INCH: 14 SINGLE THREADED PORTION
•
THREAD CLASS: 2A SINGLE THREADED PORTION A
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNS SINGLE THREADED PORTION
STYLE DESIGNATORPLAIN THREADED
MATERIALNICKEL ALLOY SEAT
BODY INSIDE DIAMETER1.500 INCHES NOMINAL IN
NOMINAL THREAD SIZE2.625 INCHES SINGLE THREADED PORTION IN
OVERALL HEIGHT2.375 INCHES NOMINAL IN
THREAD QUANTITY PER INCH14 SINGLE THREADED PORTION
THREAD CLASS2A SINGLE THREADED PORTION A
SEAT ANGLE IN DEG45.000 NOMINAL
THREAD LENGTH2.000 INCHES NOMINAL SINGLE THREADED PORTION IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
30182-04BNInterchangeable
interchangeable cross-reference
interchangeable
851 7/16Interchangeable
interchangeable cross-reference
interchangeable
78936Interchangeable
interchangeable cross-reference
interchangeable
1332PCALLInterchangeable
interchangeable cross-reference
interchangeable
8517PC16Interchangeable
interchangeable cross-reference
interchangeable
8517ITEM16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8571PC25?
8571PC25 is a SEAT,VALVE.
What parts can replace 8571PC25?
There are 13 known substitutes for 8571PC25: 30182-04BN, 851 7/16, 78936 and 10 more. Substitute compatibility should be verified for your specific system.
Is 8571PC25 still available?
8571PC25 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