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Technical Data Sheet
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SZ4ANDTN4 ✓ 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 PISTON AND FOLLOWER ASSEMBLY is a the manufacturer industrial component. Key specifications include special_features: STEEL;7.990 IN.O/A LG;2.995 IN.DIA;8 RING GROOVES 0.188 IN.DIA;0.190 IN.DEPTHL;WITH RING IN, end_item_identification: WARREN 9X6X16 VERTICAL SINGLE PUMP. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-00-218-4191, 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
SZ4ANDTN4
NSN: 4810-00-218-4191
FSC: 4810
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
special_featuresSTEEL;7.990 IN.O/A LG;2.995 IN.DIA;8 RING GROOVES 0.188 IN.DIA;0.190 IN.DEPTHL;WITH RING IN
end_item_identificationWARREN 9X6X16 VERTICAL SINGLE PUMP
NSN4810-00-218-4191
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: SZ4ANDTN4 · 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
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONWARREN 9X6X16 VERTICAL SINGLE PUMP
SPECIAL FEATURESSTEEL;7.990 IN.O/A LG;2.995 IN.DIA;8 RING GROOVES 0.188 IN.DIA;0.190 IN.DEPTHL;WITH RING IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
BS6-2081,PC.152Interchangeable
interchangeable cross-reference
interchangeable
SJ2Interchangeable
interchangeable cross-reference
interchangeable
BS7-2082PC152Interchangeable
interchangeable cross-reference
interchangeable
BS7-2082Interchangeable
interchangeable cross-reference
interchangeable
451242010-40ASSYInterchangeable
interchangeable cross-reference
interchangeable
BS5-1705PC12T019Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SZ4ANDTN4?
SZ4ANDTN4 is a PISTON AND FOLLOWER ASSEMBLY.
What parts can replace SZ4ANDTN4?
There are 20 known substitutes for SZ4ANDTN4: BS6-2081,PC.152, SJ2, BS7-2082PC152 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SZ4ANDTN4?
SZ4ANDTN4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-00-218-4191. 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