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198-3427 — REGULATOR,THERMOSTATIC TEMPERATU

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

198-3427: REGULATOR,THERMOSTATIC TEMPERATU.

REGULATOR,THERMOSTATIC TEMPERATU. Key specifications include usage_design: CONTROL WATER TEMPERATURE, thermostat_type: COIL SPRING BIMETALLIC, opening_temp_rating: 84.0 CELSIUS MINIMUM AND 86.0 CELSIUS MAXIMUM DEGC, operating_temp_rating: 95.0 CELSIUS NOMINAL DEGC, end_item_identification: ENGINE DIESEL P/N 3608/109-3839 USED ONBOARD 225 FT WLB COAST GUARD VESSELS FT. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-413-3254, 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
198-3427
NSN: 4820-01-413-3254
FSC: 4820 — Valves, Nonpowered
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
usage_designCONTROL WATER TEMPERATURE
thermostat_typeCOIL SPRING BIMETALLIC
opening_temp_rating84.0 CELSIUS MINIMUM AND 86.0 CELSIUS MAXIMUM DEGC
operating_temp_rating95.0 CELSIUS NOMINAL DEGC
end_item_identificationENGINE DIESEL P/N 3608/109-3839 USED ONBOARD 225 FT WLB COAST GUARD VESSELS FT
NSN4820-01-413-3254
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 198-3427 · 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
•
OPERATING TEMP RATING: 95.0 CELSIUS NOMINAL DEGC
•
THERMOSTAT TYPE: COIL SPRING BIMETALLIC
•
USAGE DESIGN: CONTROL WATER TEMPERATURE
•
OPENING TEMP RATING: 84.0 CELSIUS MINIMUM AND 86.0 CELSIUS MAXIMUM DEGC
TECHNICAL CHARACTERISTICS
OPERATING TEMP RATING95.0 CELSIUS NOMINAL DEGC
THERMOSTAT TYPECOIL SPRING BIMETALLIC
END ITEM IDENTIFICATIONENGINE DIESEL P/N 3608/109-3839 USED ONBOARD 225 FT WLB COAST GUARD VESSELS FT
USAGE DESIGNCONTROL WATER TEMPERATURE
OPENING TEMP RATING84.0 CELSIUS MINIMUM AND 86.0 CELSIUS MAXIMUM DEGC
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 1
6I-4957Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 198-3427?
198-3427 is a REGULATOR,THERMOSTATIC TEMPERATU.
What parts can replace 198-3427?
There is 1 known substitute for 198-3427: 6I-4957. Substitute compatibility should be verified for your specific system.
What is the NSN for 198-3427?
198-3427 is cataloged in the U.S. Government catalog under NSN 4820-01-413-3254. This indicates validated use in U.S. government and defense supply chains.
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✓ 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.