PartsTable
Technical Data Sheet
Download PDF

4138A033 — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

4138A033: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include special_features: USED ON LUBRICATING OIL PUMP AND DELIVERY HOUSING, disk_loading_method: SPRING, end_item_identification: SHIPBOARD MATERIEL H, media_for_which_designed: OIL, LUBRICATING, DIESTER BASE SINGLE RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-423-8020, 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
4138A033
NSN: 4820-01-423-8020
FSC: 4820 — Valves, Nonpowered
CAGE: 13446 — PERKINS ENGINES INC (USA)
SPECIFICATIONS
special_featuresUSED ON LUBRICATING OIL PUMP AND DELIVERY HOUSING
disk_loading_methodSPRING
end_item_identificationSHIPBOARD MATERIEL H
media_for_which_designedOIL, LUBRICATING, DIESTER BASE SINGLE RESPONSE
NSN4820-01-423-8020
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 4138A033 · 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
•
DISK LOADING METHOD: SPRING
•
MEDIA FOR WHICH DESIGNED: OIL, LUBRICATING, DIESTER BASE SINGLE RESPONSE
TECHNICAL CHARACTERISTICS
DISK LOADING METHODSPRING
SPECIAL FEATURESUSED ON LUBRICATING OIL PUMP AND DELIVERY HOUSING
MEDIA FOR WHICH DESIGNEDOIL, LUBRICATING, DIESTER BASE SINGLE RESPONSE
END ITEM IDENTIFICATIONSHIPBOARD MATERIEL H
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 4138A033?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 4138A033?
4138A033 is a VALVE,SAFETY RELIEF.
What is the NSN for 4138A033?
4138A033 is cataloged in the U.S. Government catalog under NSN 4820-01-423-8020. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 4138A033

✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.