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Technical Data Sheet
PartsTable / COMPONENT / MIL-PRF-SHS
MIL-PRF-SHS ✓ 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 INSULATION SHEET,ELECTRICAL is a the manufacturer industrial component. Key specifications include end_item_identification: 4520-01-478-9207, SPACE HEATER, SMALL, general_characteristics_item_description: SPECIAL PROJECT SPACE HEATER SMALL, part_name_assigned_by_controlling_agency: REGULATING FLOAT VALVE ASSEMBLY. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-491-7258, 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
MIL-PRF-SHS
NSN: 4820-01-491-7258
FSC: 4820
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
end_item_identification4520-01-478-9207, SPACE HEATER, SMALL
general_characteristics_item_descriptionSPECIAL PROJECT SPACE HEATER SMALL
part_name_assigned_by_controlling_agencyREGULATING FLOAT VALVE ASSEMBLY
NSN4820-01-491-7258
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: MIL-PRF-SHS · 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
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATION4520-01-478-9207, SPACE HEATER, SMALL
PART NAME ASSIGNED BY CONTROLLING AGENCYREGULATING FLOAT VALVE ASSEMBLY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
106.46-4Interchangeable
interchangeable cross-reference
interchangeable
1064/64Interchangeable
interchangeable cross-reference
interchangeable
1407665Interchangeable
interchangeable cross-reference
interchangeable
106527Interchangeable
interchangeable cross-reference
interchangeable
MIL-PRF-SHSInterchangeable
interchangeable cross-reference
interchangeable
106482Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-PRF-SHS?
MIL-PRF-SHS is a INSULATION SHEET,ELECTRICAL.
What parts can replace MIL-PRF-SHS?
There are 15 known substitutes for MIL-PRF-SHS: 106.46-4, 1064/64, 1407665 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-PRF-SHS?
MIL-PRF-SHS is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-491-7258. 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