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Technical Data Sheet
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B-3533 — 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

The DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include material: RUBBER, style_designator: FLAT, stem_actuating_end_type: THREADED EXTERNALLY. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 4820-01-261-1081, 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-3533
NSN: 4820-01-261-1081
FSC: 4820
CAGE: 8FGX3 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORP DBA STEAM & AIR SOLUTIONS DIV CURTISS-WRIGHT STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
materialRUBBER
style_designatorFLAT
stem_actuating_end_typeTHREADED EXTERNALLY
NSN4820-01-261-1081
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: B-3533 · 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
•
MATERIAL: STEEL CORROSION RESISTING
•
STEM ACTUATING END TYPE: THREADED EXTERNALLY
TECHNICAL CHARACTERISTICS
MATERIALSTEEL CORROSION RESISTING
STEM ACTUATING END TYPETHREADED EXTERNALLY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
A1160InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MIL-DTL-14652BInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MIL-I-14652InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
8019120P22InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
7210InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
BACN10MK3X85InterchangeableGOVERNMENT 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-3533?
B-3533 is a DIAPHRAGM,VALVE,FLAT.
What parts can replace B-3533?
There are 13 known substitutes for B-3533: A1160, MIL-DTL-14652B, MIL-I-14652 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B-3533?
B-3533 is cataloged in the Federal Logistics Information System under NSN 4820-01-261-1081. 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: October 2026