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Technical Data Sheet
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C639 — VALVE,POP-UP

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

C639: VALVE,POP-UP.

The VALVE,POP-UP is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: SILICONE, USED TO COVER THE RETINAL PROBE; UNIT QTY 6, part_name_assigned_by_controlling_agency: SLEEVE INSULATING CRYOSURGICAL SILICONE TO COVER RETINAL PROBE6S. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-275-9008, 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
C639
NSN: 4820-01-275-9008
FSC: 4820 — Valves, Nonpowered
CAGE: 51835 — UNIVERSAL EQUIPMENT MFG CO INC (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSILICONE, USED TO COVER THE RETINAL PROBE; UNIT QTY 6
part_name_assigned_by_controlling_agencySLEEVE INSULATING CRYOSURGICAL SILICONE TO COVER RETINAL PROBE6S
NSN4820-01-275-9008
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: C639 · 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
SUBSTITUTES & CROSS-REFERENCES 1
P805Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 C639?
C639 is a VALVE,POP-UP.
What parts can replace C639?
There is 1 known substitute for C639: P805. Substitute compatibility should be verified for your specific system.
What is the NSN for C639?
C639 is cataloged in the U.S. Government catalog under NSN 4820-01-275-9008. This indicates validated use in U.S. government and defense supply chains.
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