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B-45528 PART 15780A — Technical Data Sheet

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— · 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

RESISTOR,VARIABLE,WIRE WOUND,PRE. Key specifications include material: STEEL OVERALL, thread_class: 2A SINGLE THREADED PORTION A, thread_length: 0.250 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 1.405 INCHES NOMINAL IN, style_designator: THREADED FLANGED, seat_angle_in_deg: 45.000 NOMINAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 4820-01-117-4688, 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
B-45528 PART 15780A
NSN: 4820-01-117-4688
FSC: 4820
CAGE: 63220 — FLOWSERVE INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thread_class2A SINGLE THREADED PORTION A
thread_length0.250 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter1.405 INCHES NOMINAL IN
style_designatorTHREADED FLANGED
seat_angle_in_deg45.000 NOMINAL
nominal_thread_size0.938 INCHES SINGLE THREADED PORTION IN
under_flange_height0.398 INCHES NOMINAL IN
body_inside_diameter0.642 INCHES NOMINAL IN
seating_surface_shapeANGULAR
thread_quantity_per_inch16 SINGLE THREADED PORTION
thread_series_designatorUN SINGLE THREADED PORTION
NSN4820-01-117-4688
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: B-45528 PART 15780A · 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
•
SEATING SURFACE SHAPE: ANGULAR
•
STYLE DESIGNATOR: THREADED FLANGED
•
THREAD SERIES DESIGNATOR: UN SINGLE THREADED PORTION
•
MATERIAL: STEEL OVERALL
•
BODY INSIDE DIAMETER: 0.642 INCHES NOMINAL IN
•
FLANGE SEAT TO DISK END HEIGHT: 0.290 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 45.000 NOMINAL
•
FLANGE DIAMETER: 1.405 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SEATING SURFACE SHAPEANGULAR
STYLE DESIGNATORTHREADED FLANGED
THREAD SERIES DESIGNATORUN SINGLE THREADED PORTION
MATERIALSTEEL OVERALL
BODY INSIDE DIAMETER0.642 INCHES NOMINAL IN
FLANGE SEAT TO DISK END HEIGHT0.290 INCHES NOMINAL IN
SEAT ANGLE IN DEG45.000 NOMINAL
FLANGE DIAMETER1.405 INCHES NOMINAL IN
THREAD QUANTITY PER INCH16 SINGLE THREADED PORTION
UNDER FLANGE HEIGHT0.398 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
33012InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
USAF330-12InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
310232-3InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
7730InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
10A820148InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
41S54InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B-45528 PART 15780A?
B-45528 PART 15780A is a RESISTOR,VARIABLE,WIRE WOUND,PRE.
What parts can replace B-45528 PART 15780A?
There are 15 known substitutes for B-45528 PART 15780A: 33012, USAF330-12, 310232-3 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B-45528 PART 15780A?
B-45528 PART 15780A is cataloged in the Federal Logistics Information System under NSN 4820-01-117-4688. 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.
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Last verified: September 2026