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Technical Data Sheet
PartsTable / COMPONENT / R38-100R
R38-100R ✓ 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

PARTS KIT,PRESSURE REGULATING VA. Key specifications include model_number: B38, end_item_name: FILTER/REGULATOR, end_item_source: 43990. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-241-2987, 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
R38-100R
NSN: 4820-01-241-2987
FSC: 4820
CAGE: 43990 — NORGREN C A CO (USA)
SPECIFICATIONS
model_numberB38
end_item_nameFILTER/REGULATOR
end_item_source43990
NSN4820-01-241-2987
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: R38-100R · 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
•
END ITEM SOURCE: 43990
•
END ITEM NAME: FILTER/REGULATOR
•
MODEL NUMBER: B38
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM SOURCE43990
END ITEM NAMEFILTER/REGULATOR
MODEL NUMBERB38
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
278/720Interchangeable
interchangeable cross-reference
interchangeable
1551BInterchangeable
interchangeable cross-reference
interchangeable
221-0577-00Interchangeable
interchangeable cross-reference
interchangeable
2787-20Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R38-100R?
R38-100R is a PARTS KIT,PRESSURE REGULATING VA.
What parts can replace R38-100R?
There are 4 known substitutes for R38-100R: 278/720, 1551B, 221-0577-00 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R38-100R?
R38-100R is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-241-2987. 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