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L1575C — Technical Data Sheet

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— · 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 VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include fsc_application_data: TELETYPE AND FACSIMILE EQUIPMENT, end_item_identification: TRACTOR FEED ROK SET. This part is cataloged in the Federal Logistics Information System under NSN 4820-00-627-3995, 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
L1575C
NSN: 4820-00-627-3995
FSC: 4820
CAGE: 81983 — G.W. LISK CO, INC DIV G.W. LISK COMPANY, INC. (USA)
SPECIFICATIONS
fsc_application_dataTELETYPE AND FACSIMILE EQUIPMENT
end_item_identificationTRACTOR FEED ROK SET
NSN4820-00-627-3995
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: L1575C · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
400662InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
40066-202InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
40066-201InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
40066-2 PC.NO. 35InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
146InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
146-13InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is L1575C?
L1575C is a VALVE,SAFETY RELIEF.
What parts can replace L1575C?
There are 9 known substitutes for L1575C: 400662, 40066-202, 40066-201 and 6 more. Substitute compatibility should be verified for your specific system.
Is L1575C still available?
L1575C is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: October 2026