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Technical Data Sheet
PartsTable / COMPONENT / 737-03
737-03 ✓ 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 DISK,PURIFIER is a the manufacturer industrial component. Key specifications include end_item_identification: MODEL MAB104B-20 AND WSB104B-10 PURIFIERS, general_characteristics_item_description: INSIDE DIA 57.5 MM MM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-149-0034, 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
737-03
NSN: 4820-01-149-0034
FSC: 4820
CAGE: 09790 — EATON AEROSPACE LLC DBA STERER ENGINEERING DIV VALVE & ACTUATOR (USA)
SPECIFICATIONS
end_item_identificationMODEL MAB104B-20 AND WSB104B-10 PURIFIERS
general_characteristics_item_descriptionINSIDE DIA 57.5 MM MM
NSN4820-01-149-0034
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 737-03 · 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
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
•
CRITICALITY CODE JUSTIFICATION: ZZZY
TECHNICAL CHARACTERISTICS (FLIS)
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSQUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
CRITICALITY CODE JUSTIFICATIONZZZY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
737-03Interchangeable
interchangeable cross-reference
interchangeable
SERPENTINE COLLARSInterchangeable
interchangeable cross-reference
interchangeable
00-0737-003-00Interchangeable
interchangeable cross-reference
interchangeable
7370300Interchangeable
interchangeable cross-reference
interchangeable
73405 ITEM 26L1Interchangeable
Same NIIN cross-reference
interchangeable
73703L1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 737-03?
737-03 is a DISK,PURIFIER.
What parts can replace 737-03?
There are 9 known substitutes for 737-03: 737-03, SERPENTINE COLLARS, 00-0737-003-00 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 737-03?
737-03 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-149-0034. 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