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BSZ9 ✓ 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 GLASS,VALVE GAGE is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: GLASS,13.375 IN.LG,1.375 IN.W,0.687 IN.O/A THK,FOUR V GROOVES 12.437 IN.LG,0.120 IN.W,0.067 IN.DEEP,1 SURFACE IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-953-8269, 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
BSZ9
NSN: 4820-00-953-8269
FSC: 4820
CAGE: 74965 — CLARK-RELIANCE LLC DBA JERGUSON GAGE & VALVE (USA)
SPECIFICATIONS
general_characteristics_item_descriptionGLASS,13.375 IN.LG,1.375 IN.W,0.687 IN.O/A THK,FOUR V GROOVES 12.437 IN.LG,0.120 IN.W,0.067 IN.DEEP,1 SURFACE IN
NSN4820-00-953-8269
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: BSZ9 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: GLASS,13.375 IN.LG,1.375 IN.W,0.687 IN.O/A THK,FOUR V GROOVES 12.437 IN.LG,0.120 IN.W,0.067 IN.DEEP,1 SURFACE IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONGLASS,13.375 IN.LG,1.375 IN.W,0.687 IN.O/A THK,FOUR V GROOVES 12.437 IN.LG,0.120 IN.W,0.067 IN.DEEP,1 SURFACE IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
B9Interchangeable
interchangeable cross-reference
interchangeable
4900Interchangeable
interchangeable cross-reference
interchangeable
4253252Interchangeable
interchangeable cross-reference
interchangeable
14136AInterchangeable
interchangeable cross-reference
interchangeable
216FInterchangeable
interchangeable cross-reference
interchangeable
216SFInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BSZ9?
BSZ9 is a GLASS,VALVE GAGE.
What parts can replace BSZ9?
There are 20 known substitutes for BSZ9: B9, 4900, 4253252 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BSZ9?
BSZ9 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-953-8269. 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