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170602 — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

170602: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include end_item_identification: GULFSTREAM G550, part_name_assigned_by_controlling_agency: OXYGEN SYSTEM CHECK VALVE. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-902-5068, 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
170602
NSN: 4820-00-902-5068
NIINs: 009025068, 010838721, 017320013
FSC: 4820 — Valves, Nonpowered
CAGE: 99657 — MAROTTA CONTROLS INC (USA)
SPECIFICATIONS
end_item_identificationGULFSTREAM G550
part_name_assigned_by_controlling_agencyOXYGEN SYSTEM CHECK VALVE
NSN4820-00-902-5068
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 170602 · 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
•
BODY OUTSIDE DIAMETER: 1.547 INCHES MINIMUM AND 1.549 INCHES MAXIMUM IN
•
BODY STEPPED INSIDE DIAMETER: 1.000 INCHES NOMINAL FIRST STEP IN
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STYLE DESIGNATOR: PLAIN
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MATERIAL DOCUMENT AND CLASSIFICATION: MIL-M-20693,COMP A,TYPE 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
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MATERIAL: PLASTIC POLYHEXAMETHYLENE ADIPAMIDE OVERALL
•
SEATING SURFACE SHAPE: FLAT
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.162 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER1.547 INCHES MINIMUM AND 1.549 INCHES MAXIMUM IN
BODY STEPPED INSIDE DIAMETER1.000 INCHES NOMINAL FIRST STEP IN
BODY STEPPED INSIDE DIAMETER1.110 INCHES NOMINAL SECOND STEP IN
STYLE DESIGNATORPLAIN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-M-20693,COMP A,TYPE 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALPLASTIC POLYHEXAMETHYLENE ADIPAMIDE OVERALL
SEATING SURFACE SHAPEFLAT
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 170602?
170602 is a VALVE,CHECK.
What is the NSN for 170602?
170602 is cataloged in the U.S. Government catalog under NSN 4820-00-902-5068. 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.