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Technical Data Sheet
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8-5503 ✓ Verified by PartsTable
Dataflex · 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

For storage of administrative files (max. 10 files). Snap-on side covers for cable management.

On 4 castors (2 lockable). KD packed.<br><br>- For storage of administrative files<br>- Snap-on side panels for easy cable management<br>- Comes with 4 castors (2 braked)<br>- KD packed<br>- Dimensions (wxdxh): 596 x 510 x 888mm This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-036-1977, 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
8-5503
NSN: 4820-00-036-1977
FSC: 4820
CAGE: 38056 — ASHCROFT INC DBA HEISE (USA)
SPECIFICATIONS
materialNICKEL ALLOY
seat_angle45.0 DEGREES NOMINAL
thread_class2B
overall_height3.188 INCHES NOMINAL IN
shoulder_width1.450 INCHES NOMINAL IN
shoulder_height0.500 INCHES NOMINAL IN
outside_diameter5.188 INCHES NOMINAL IN
style_designatorPLUG
nominal_thread_size1.500 INCHES IN
media_for_which_designedSTEAM
thread_series_designatorUNEF
NSN4820-00-036-1977
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 8-5503 · Dataflex ⚠ 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
•
SEAT ANGLE: 45.0 DEGREES NOMINAL
•
MATERIAL: NICKEL ALLOY
•
SHOULDER WIDTH: 1.450 INCHES NOMINAL IN
•
MEDIA FOR WHICH DESIGNED: STEAM
•
OUTSIDE DIAMETER: 5.188 INCHES NOMINAL IN
•
THREAD SERIES DESIGNATOR: UNEF
•
STYLE DESIGNATOR: PLUG
TECHNICAL CHARACTERISTICS (FLIS)
SEAT ANGLE45.0 DEGREES NOMINAL
MATERIALNICKEL ALLOY
SHOULDER WIDTH1.450 INCHES NOMINAL IN
MEDIA FOR WHICH DESIGNEDSTEAM
OUTSIDE DIAMETER5.188 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNEF
STYLE DESIGNATORPLUG
OVERALL HEIGHT3.188 INCHES NOMINAL IN
NOMINAL THREAD SIZE1.500 INCHES IN
SHOULDER HEIGHT0.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
CPR104420Interchangeable
interchangeable cross-reference
interchangeable
3250-06104Interchangeable
interchangeable cross-reference
interchangeable
B357-0001Interchangeable
interchangeable cross-reference
interchangeable
8-5503Interchangeable
interchangeable cross-reference
interchangeable
4824-3135968PC3Interchangeable
Same NIIN cross-reference
interchangeable
5VBR72PC3Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8-5503?
8-5503 is a SEMICONDUCTOR DEVICE,DIODE manufactured by Dataflex.
What parts can replace 8-5503?
There are 6 known substitutes for 8-5503: CPR104420, 3250-06104, B357-0001 and 3 more. Substitute compatibility should be verified for your specific system.
Is 8-5503 still available?
8-5503 is currently cancelled.
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Last verified: July 2026