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Technical Data Sheet
PartsTable / MRO / 28-038
28-038 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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

CAPACITOR,VARIABLE,CERAMIC DIELE. Key specifications include material: STEEL OVERALL, body_style: ROTARY, head_angle: 30.0 DEGREES NOMINAL, blade_width: 0.500 INCHES NOMINAL IN, body_length: 0.453 INCHES MAXIMUM IN, design_type: SPRING TEMPERED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-083-1828, 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
MRO→ MRO_GENERAL→ 28-038
NSN: 4820-00-083-1828
FSC: 4820
CAGE: 5RQL2 — DRS ENVIRONMENTAL SYSTEMS INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_styleROTARY
head_angle30.0 DEGREES NOMINAL
blade_width0.500 INCHES NOMINAL IN
body_length0.453 INCHES MAXIMUM IN
design_typeSPRING TEMPERED
thread_class2A FIRST END A
joined_length93.500 INCHES NOMINAL IN
rating_methodELECTRICAL SINGLE COMPONENT SINGLE WINDING
head_thickness0.250 INCHES NOMINAL IN
inclosure_typeFULLY INCLOSED
overall_height0.170 INCHES NOMINAL IN
NSN4820-00-083-1828
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 28-038 · 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 DIRECTION: RIGHT-HAND FIRST END
•
CONNECTION STYLE: PLAIN (PIPE) SECOND END
•
MATERIAL: COPPER ALLOY OVERALL
•
NOMINAL THREAD SIZE: 0.500 INCHES FIRST END IN
•
THREAD QUANTITY PER INCH: 24 FIRST END
•
FLOW CONTROL DEVICE: STEM
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONGRUMMAN AEROSPACE A-10 AIRCRAFT
THREAD DIRECTIONRIGHT-HAND FIRST END
THREAD DIRECTIONRIGHT-HAND SECOND END
CONNECTION STYLEPLAIN (PIPE) SECOND END
MATERIALCOPPER ALLOY OVERALL
NOMINAL THREAD SIZE0.500 INCHES FIRST END IN
THREAD QUANTITY PER INCH24 FIRST END
FLOW CONTROL DEVICESTEM
THREAD SERIES DESIGNATORUNS FIRST END
SEAT NOMINAL RADIUS0.062 INCHES FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
28-038Interchangeable
interchangeable cross-reference
interchangeable
A-A-1353Interchangeable
interchangeable cross-reference
interchangeable
GGG-B-421Interchangeable
interchangeable cross-reference
interchangeable
GGG-B-421 TY2ST2Interchangeable
interchangeable cross-reference
interchangeable
20A3553-2Interchangeable
interchangeable cross-reference
interchangeable
P89-W-1CInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 28-038?
28-038 is a CAPACITOR,VARIABLE,CERAMIC DIELE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 28-038?
There are 13 known substitutes for 28-038: 28-038, A-A-1353, GGG-B-421 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 28-038?
28-038 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-083-1828. 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