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Technical Data Sheet
PartsTable / COMPONENT / 900540
900540 ✓ 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 HEAD,SAFETY,PRESSURE RELIEF is a the manufacturer industrial component. Key specifications include overall_height: 2.335 INCHES NOMINAL IN, overall_diameter: 3.500 INCHES NOMINAL IN, special_features: 39.0 OHMS DC RESISTANCE;360 RAD/SEC MAX OPERATING SPEED;86 VOLTS AT MAXOPERATING SPEED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-391-5742, 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
900540
NSN: 4820-00-391-5742
FSC: 4820
CAGE: 61649 — KIDDE INC WALTER KIDDE DIV PORTABLE CYLINDER OPNS (USA)
SPECIFICATIONS
overall_height2.335 INCHES NOMINAL IN
overall_diameter3.500 INCHES NOMINAL IN
special_features39.0 OHMS DC RESISTANCE;360 RAD/SEC MAX OPERATING SPEED;86 VOLTS AT MAXOPERATING SPEED
NSN4820-00-391-5742
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 900540 · 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
•
HEAD MATERIAL: COPPER ALLOY
•
END CONNECTION TYPE: THREADED
TECHNICAL CHARACTERISTICS (FLIS)
HEAD MATERIALCOPPER ALLOY
END CONNECTION TYPETHREADED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
900540-1Interchangeable
interchangeable cross-reference
interchangeable
402-97BInterchangeable
interchangeable cross-reference
interchangeable
402-97EInterchangeable
interchangeable cross-reference
interchangeable
900540Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 900540?
900540 is a HEAD,SAFETY,PRESSURE RELIEF.
What parts can replace 900540?
There are 4 known substitutes for 900540: 900540-1, 402-97B, 402-97E and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 900540?
900540 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-391-5742. 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