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Technical Data Sheet
PartsTable / COMPONENT / 40673-1 ITEM 22
40673-1 ITEM 22 ✓ 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,VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, special_features: USED ON 2IN. TRAC STYLE "D" 3-WAY THERMOSTATIC TEMPERATURE REGULATOR VALVE IN, end_item_identification: SEAWOLF CLASS SSN.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-442-4500, 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
40673-1 ITEM 22
NSN: 4820-01-442-4500
FSC: 4820
CAGE: 55378 — TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY
special_featuresUSED ON 2IN. TRAC STYLE "D" 3-WAY THERMOSTATIC TEMPERATURE REGULATOR VALVE IN
end_item_identificationSEAWOLF CLASS SSN
NSN4820-01-442-4500
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 40673-1 ITEM 22 · 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
•
MATERIAL: COPPER ALLOY
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
SPECIAL FEATURESUSED ON 2IN. TRAC STYLE "D" 3-WAY THERMOSTATIC TEMPERATURE REGULATOR VALVE IN
MATERIALCOPPER ALLOY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
40673-1Interchangeable
interchangeable cross-reference
interchangeable
156300Interchangeable
interchangeable cross-reference
interchangeable
161-00Interchangeable
interchangeable cross-reference
interchangeable
40175-01Interchangeable
interchangeable cross-reference
interchangeable
165-00Interchangeable
interchangeable cross-reference
interchangeable
40673-1 ITEM 35Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40673-1 ITEM 22?
40673-1 ITEM 22 is a DISK,VALVE.
What parts can replace 40673-1 ITEM 22?
There are 9 known substitutes for 40673-1 ITEM 22: 40673-1, 156300, 161-00 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40673-1 ITEM 22?
40673-1 ITEM 22 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-442-4500. 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