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PartsTable / COMPONENT / 8540 PIECE 4
8540 PIECE 4 ✓ 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 TRANSFORMER,RADIO FREQUENCY is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, overall_length: 9.188 INCHES NOMINAL IN, stem_actuating_end_type: ROUNDED, valve_size_for_which_designed: 1.000 INCHES IN, valve_type_for_which_designed: RELIEF, valve_model_number_for_which_designed: 1241-T. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-230-1198, 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
8540 PIECE 4
NSN: 4820-01-230-1198
FSC: 4820
CAGE: 01343 — ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY (USA)
SPECIFICATIONS
materialNICKEL ALLOY
overall_length9.188 INCHES NOMINAL IN
stem_actuating_end_typeROUNDED
valve_size_for_which_designed1.000 INCHES IN
valve_type_for_which_designedRELIEF
valve_model_number_for_which_designed1241-T
NSN4820-01-230-1198
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 8540 PIECE 4 · 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
•
VALVE SIZE FOR WHICH DESIGNED: 1.000 INCHES IN
•
STEM ACTUATING END TYPE: ROUNDED
•
MATERIAL: NICKEL ALLOY
•
VALVE TYPE FOR WHICH DESIGNED: RELIEF
•
VALVE MODEL NUMBER FOR WHICH DESIGNED: 1241-T
TECHNICAL CHARACTERISTICS (FLIS)
VALVE SIZE FOR WHICH DESIGNED1.000 INCHES IN
STEM ACTUATING END TYPEROUNDED
MATERIALNICKEL ALLOY
OVERALL LENGTH9.188 INCHES NOMINAL IN
VALVE TYPE FOR WHICH DESIGNEDRELIEF
VALVE MODEL NUMBER FOR WHICH DESIGNED1241-T
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
8-540Interchangeable
interchangeable cross-reference
interchangeable
05146-000-0569Interchangeable
interchangeable cross-reference
interchangeable
9284-A-194-1BInterchangeable
interchangeable cross-reference
interchangeable
47642Interchangeable
interchangeable cross-reference
interchangeable
7612520Interchangeable
interchangeable cross-reference
interchangeable
FFW84CLASSASTYLE1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8540 PIECE 4?
8540 PIECE 4 is a TRANSFORMER,RADIO FREQUENCY.
What parts can replace 8540 PIECE 4?
There are 18 known substitutes for 8540 PIECE 4: 8-540, 05146-000-0569, 9284-A-194-1B and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 8540 PIECE 4?
8540 PIECE 4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-230-1198. 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