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Technical Data Sheet
PartsTable / COMPONENT / 1578 25IN-C056950REV0/883030066
1578 25IN-C056950REV0/883030066 ✓ 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 1578 25IN-C056950REV0/883030066 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-011-3606, 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
1578 25IN-C056950REV0/883030066
NSN: 4820-01-011-3606
FSC: 4820
CAGE: 48422 — WILLIAM POWELL COMPANY, THE DBA POWELL VALVE DIV THE STARFLO CORPORATION (USA)
SPECIFICATIONS
Part Number1578 25IN-C056950REV0/883030066
NSN4820-01-011-3606
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1578 25IN-C056950REV0/883030066 · 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
•
OPERATING PRESSURE: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
MOUNTING POSITION: HORIZONTAL
•
MAXIMUM OPERATING TEMP: 650.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
BOLT HOLE NOMINAL DIAMETER: 0.750 INCHES ALL ENDS IN
•
STYLE DESIGNATOR: ANGLE
•
FLANGE FACE DESIGN: PLAIN ALL ENDS
•
MEDIA FOR WHICH DESIGNED: STEAM SINGLE RESPONSE
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-17131,MIL-R-COCR-A MIL SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
TECHNICAL CHARACTERISTICS (FLIS)
OPERATING PRESSURE150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MOUNTING POSITIONHORIZONTAL
MAXIMUM OPERATING TEMP650.0 FAHRENHEIT SINGLE RESPONSE DEGF
BOLT HOLE NOMINAL DIAMETER0.750 INCHES ALL ENDS IN
STYLE DESIGNATORANGLE
FLANGE FACE DESIGNPLAIN ALL ENDS
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-17131,MIL-R-COCR-A MIL SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
SPECIAL FEATURESVALVE SIZE 2-1/2 IN. IN
BOLT CIRCLE NOMINAL DIAMETER5.500 INCHES ALL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
39501Interchangeable
interchangeable cross-reference
interchangeable
02838Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-22052Interchangeable
Same NIIN cross-reference
interchangeable
14-02-1/2INS-14020250/882039642Interchangeable
Same NIIN cross-reference
interchangeable
MIL-V-22052Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1578 25IN-C056950REV0/883030066?
1578 25IN-C056950REV0/883030066 is a 1578 25IN-C056950REV0/883030066.
What parts can replace 1578 25IN-C056950REV0/883030066?
There are 5 known substitutes for 1578 25IN-C056950REV0/883030066: 39501, 02838, MIL-DTL-22052 and 2 more. Substitute compatibility should be verified for your specific system.
Is 1578 25IN-C056950REV0/883030066 still available?
1578 25IN-C056950REV0/883030066 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: July 2026