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Technical Data Sheet
PartsTable / COMPONENT / 4P158-1
4P158-1 ✓ 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 VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include end_item_identification: GENERATOR SET,DIESEL @ENGINE,PART NO. 596-100.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-182-4408, 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
4P158-1
NSN: 4820-01-182-4408
FSC: 4820
CAGE: 82829 — ALLEN AIRCRAFT PRODUCTS INC (USA)
SPECIFICATIONS
end_item_identificationGENERATOR SET,DIESEL @ENGINE,PART NO. 596-100
NSN4820-01-182-4408
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 4P158-1 · 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 4
196151Interchangeable
interchangeable cross-reference
interchangeable
M20000-219-1Interchangeable
interchangeable cross-reference
interchangeable
P1581Interchangeable
interchangeable cross-reference
interchangeable
929032-1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4P158-1?
4P158-1 is a VALVE,SAFETY RELIEF.
What parts can replace 4P158-1?
There are 4 known substitutes for 4P158-1: 196151, M20000-219-1, P1581 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4P158-1?
4P158-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-182-4408. 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