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Technical Data Sheet
PartsTable / COMPONENT / 20031PC4
20031PC4 ✓ 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

RESISTOR,VARIABLE,NONWIRE WOUND,. Key specifications include material: NICKEL ALLOY OVERALL, thread_class: 2A SINGLE THREADED PORTION A, thread_length: 0.625 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 1.375 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, nominal_thread_size: 1.125 INCHES SINGLE THREADED PORTION IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-079-1485, 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
20031PC4
NSN: 4820-01-079-1485
FSC: 4820
CAGE: 01343 — ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
thread_class2A SINGLE THREADED PORTION A
thread_length0.625 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter1.375 INCHES NOMINAL IN
style_designatorPLAIN FLANGED
nominal_thread_size1.125 INCHES SINGLE THREADED PORTION IN
under_flange_height0.875 INCHES NOMINAL IN
body_inside_diameter0.750 INCHES NOMINAL IN
body_outside_diameter1.047 INCHES NOMINAL IN
seating_surface_shapeFLAT
thread_series_designatorUNEF SINGLE THREADED PORTION
flange_seat_to_disk_end_height0.375 INCHES NOMINAL IN
NSN4820-01-079-1485
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 20031PC4 · 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 LENGTH: 0.625 INCHES NOMINAL SINGLE THREADED PORTION IN
•
THREAD SERIES DESIGNATOR: UNEF SINGLE THREADED PORTION
•
MATERIAL: NICKEL ALLOY OVERALL
•
STYLE DESIGNATOR: PLAIN FLANGED
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
FLANGE SEAT TO DISK END HEIGHT: 0.375 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 0.750 INCHES NOMINAL IN
•
UNDER FLANGE HEIGHT: 0.875 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH0.625 INCHES NOMINAL SINGLE THREADED PORTION IN
THREAD SERIES DESIGNATORUNEF SINGLE THREADED PORTION
MATERIALNICKEL ALLOY OVERALL
STYLE DESIGNATORPLAIN FLANGED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
FLANGE SEAT TO DISK END HEIGHT0.375 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.750 INCHES NOMINAL IN
UNDER FLANGE HEIGHT0.875 INCHES NOMINAL IN
SEATING SURFACE SHAPEFLAT
THREAD CLASS2A SINGLE THREADED PORTION A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
5436-020Interchangeable
interchangeable cross-reference
interchangeable
670-7Interchangeable
interchangeable cross-reference
interchangeable
37TB31FInterchangeable
interchangeable cross-reference
interchangeable
X13073Interchangeable
interchangeable cross-reference
interchangeable
15BC02Interchangeable
interchangeable cross-reference
interchangeable
110 31/64Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20031PC4?
20031PC4 is a RESISTOR,VARIABLE,NONWIRE WOUND,.
What parts can replace 20031PC4?
There are 20 known substitutes for 20031PC4: 5436-020, 670-7, 37TB31F and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20031PC4?
20031PC4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-079-1485. 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