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187573 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

187573: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC SEAT, special_features: USED ON A 6 IN. BUTTERFLY VALVE IN, seating_surface_shape: FLAT.

This part is cataloged in the U.S. Government catalog under NSN 4820-01-423-8684, 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
187573
NSN: 4820-01-423-8684
FSC: 4820 — Valves, Nonpowered
CAGE: Z3279 — TYCO FLOW CONTROL (AUS)
SPECIFICATIONS
materialRUBBER SYNTHETIC SEAT
special_featuresUSED ON A 6 IN. BUTTERFLY VALVE IN
seating_surface_shapeFLAT
NSN4820-01-423-8684
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 187573 · 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: RUBBER SYNTHETIC SEAT
•
SEATING SURFACE SHAPE: FLAT
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESUSED ON A 6 IN. BUTTERFLY VALVE IN
MATERIALRUBBER SYNTHETIC SEAT
SEATING SURFACE SHAPEFLAT
SUBSTITUTES & CROSS-REFERENCES 3
470-206-060-999-003Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
DAR2-6-088 ITEM NO.4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
DAR2-6-088Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 187573?
187573 is a SEAT,VALVE.
What parts can replace 187573?
There are 3 known substitutes for 187573: 470-206-060-999-003, DAR2-6-088 ITEM NO.4, DAR2-6-088. Substitute compatibility should be verified for your specific system.
What is the NSN for 187573?
187573 is cataloged in the U.S. Government catalog under NSN 4820-01-423-8684. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.