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40173-803 — VALVE,REGULATING,TEMPERATURE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

40173-803: VALVE,REGULATING,TEMPERATURE.

The VALVE,REGULATING,TEMPERATURE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY SEAT, valve_size: 1.250 INCHES IN, temp_rating: 90.0 FAHRENHEIT MINIMUM AND 130.0 FAHRENHEIT MAXIMUM DEGF, special_features: 3-WAY(B),1X12 COPPER TUBE BULB. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-512-9546, 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
40173-803
NSN: 4820-01-512-9546
FSC: 4820 — Valves, Nonpowered
CAGE: 55378 — TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY SEAT
valve_size1.250 INCHES IN
temp_rating90.0 FAHRENHEIT MINIMUM AND 130.0 FAHRENHEIT MAXIMUM DEGF
special_features3-WAY(B),1X12 COPPER TUBE BULB
NSN4820-01-512-9546
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 40173-803 · 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
•
TEMP RATING: 90.0 FAHRENHEIT MINIMUM AND 130.0 FAHRENHEIT MAXIMUM DEGF
•
VALVE SIZE: 1.250 INCHES IN
•
MATERIAL: COPPER ALLOY BODY
TECHNICAL CHARACTERISTICS
TEMP RATING90.0 FAHRENHEIT MINIMUM AND 130.0 FAHRENHEIT MAXIMUM DEGF
VALVE SIZE1.250 INCHES IN
SPECIAL FEATURES3-WAY(B),1X12 COPPER TUBE BULB
MATERIALCOPPER ALLOY BODY
MATERIALCOPPER ALLOY SEAT
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
40173-8 ASSEMBLY 40173-803Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 40173-803?
40173-803 is a VALVE,REGULATING,TEMPERATURE.
What parts can replace 40173-803?
There is 1 known substitute for 40173-803: 40173-8 ASSEMBLY 40173-803. Substitute compatibility should be verified for your specific system.
What is the NSN for 40173-803?
40173-803 is cataloged in the U.S. Government catalog under NSN 4820-01-512-9546. 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.