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PartsTable / COMPONENT / 997074R91
997074R91 ✓ 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,AIR-HYDRAULIC BRAKE SL. Key specifications include material: ZINC ALLOY BODY, special_features: W/2 ADDITIONAL PORTS,1/4-18 NPT, nominal_thread_size: 0.500 INCHES FIRST END IN, thread_series_designator: NPT FIRST END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-073-3480, 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
997074R91
NSN: 4820-00-073-3480
FSC: 4820
CAGE: 92679 — NAVISTAR INTL CORP MELROSE PARK ENGINE PLANT LOCATION /MELROSE PARK/ (USA)
SPECIFICATIONS
materialZINC ALLOY BODY
special_featuresW/2 ADDITIONAL PORTS,1/4-18 NPT
nominal_thread_size0.500 INCHES FIRST END IN
thread_series_designatorNPT FIRST END
NSN4820-00-073-3480
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 997074R91 · 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
•
NOMINAL THREAD SIZE: 0.375 INCHES SECOND END IN
•
THREAD SERIES DESIGNATOR: NPT SECOND END
•
MATERIAL: ZINC ALLOY BODY
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.375 INCHES SECOND END IN
NOMINAL THREAD SIZE0.250 INCHES THIRD END IN
THREAD SERIES DESIGNATORNPT SECOND END
THREAD SERIES DESIGNATORNPT THIRD END
THREAD SERIES DESIGNATORNPT FIRST END
SPECIAL FEATURESW/2 ADDITIONAL PORTS,1/4-18 NPT
NOMINAL THREAD SIZE0.500 INCHES FIRST END IN
MATERIALZINC ALLOY BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
2891Interchangeable
interchangeable cross-reference
interchangeable
868536R92Interchangeable
interchangeable cross-reference
interchangeable
3780208Interchangeable
interchangeable cross-reference
interchangeable
865756R91Interchangeable
Same NIIN cross-reference
interchangeable
NA20669AInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 997074R91?
997074R91 is a PARTS KIT,AIR-HYDRAULIC BRAKE SL.
What parts can replace 997074R91?
There are 5 known substitutes for 997074R91: 2891, 868536R92, 3780208 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 997074R91?
997074R91 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-073-3480. 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