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40175-1-ITEM-19 — BONNET SEAL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

40175-1-ITEM-19: BONNET SEAL.

The BONNET SEAL is a the manufacturer industrial component. Key specifications include material: STEEL COMP 410, body_type: SOLID, current_type: DC, overall_width: 4.750 INCHES NOMINAL IN, overall_height: 0.487 INCHES MAXIMUM IN, overall_length: 6.375 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-716-9652, 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
40175-1-ITEM-19
NSN: 4820-01-716-9652
FSC: 4820 — Valves, Nonpowered
CAGE: 55378 — TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC (USA)
SPECIFICATIONS
materialSTEEL COMP 410
body_typeSOLID
current_typeDC
overall_width4.750 INCHES NOMINAL IN
overall_height0.487 INCHES MAXIMUM IN
overall_length6.375 INCHES NOMINAL IN
special_features220 VOLTS;LAMP,RED INDICATOR(LO-WATER);END ITEM APPLICATION HEATER HEAT TREATMENT PAD; MODEL SS
voltage_in_volts6.0
component_quantity74
end_hardness_rating31.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
body_outside_diameter0.089 INCHES MINIMUM AND 0.091 INCHES MAXIMUM IN
end_item_identification6530-01-244-8100
NSN4820-01-716-9652
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 40175-1-ITEM-19 · 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
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 40175-1-ITEM-19?
40175-1-ITEM-19 is a BONNET SEAL.
What is the NSN for 40175-1-ITEM-19?
40175-1-ITEM-19 is cataloged in the U.S. Government catalog under NSN 4820-01-716-9652. 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.