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CVHG12Y21S — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

CVHG12Y21S: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 BODY, valve_size: 12.0 MILLIMETERS MM, nominal_length: 4.19 MILLIMETERS ALL ENDS MM, special_features: SEAL MATERIAL:VITON;CRACK PRESSURE:1.0PSIG(0.07 BAR);INLET:1.51MM;OUTLET:1.51MM MM, end_item_identification: AIR SYSTEM AP. HIGH PRESSURE AIR DISTRIBUTION, part_name_assigned_by_controlling_agency: GYROLOK TUBE FITTING, FRACTIONAL.

This part is cataloged in the U.S. Government catalog under NSN 4820-01-680-3837, 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
CVHG12Y21S
NSN: 4820-01-680-3837
FSC: 4820 — Valves, Nonpowered
CAGE: 28968 — CIRCOR INSTRUMENTATION TECHNOLOGIES, INC. DBA HOKE GYROLOK (USA)
SPECIFICATIONS
materialSTEEL COMP 316 BODY
valve_size12.0 MILLIMETERS MM
nominal_length4.19 MILLIMETERS ALL ENDS MM
special_featuresSEAL MATERIAL:VITON;CRACK PRESSURE:1.0PSIG(0.07 BAR);INLET:1.51MM;OUTLET:1.51MM MM
end_item_identificationAIR SYSTEM AP. HIGH PRESSURE AIR DISTRIBUTION
part_name_assigned_by_controlling_agencyGYROLOK TUBE FITTING, FRACTIONAL
NSN4820-01-680-3837
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: CVHG12Y21S · 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
•
NOMINAL LENGTH: 4.19 MILLIMETERS ALL ENDS MM
•
VALVE SIZE: 12.0 MILLIMETERS MM
•
MATERIAL: STEEL COMP 316 BODY
TECHNICAL CHARACTERISTICS
NOMINAL LENGTH4.19 MILLIMETERS ALL ENDS MM
VALVE SIZE12.0 MILLIMETERS MM
SPECIAL FEATURESSEAL MATERIAL:VITON;CRACK PRESSURE:1.0PSIG(0.07 BAR);INLET:1.51MM;OUTLET:1.51MM MM
PART NAME ASSIGNED BY CONTROLLING AGENCYGYROLOK TUBE FITTING, FRACTIONAL
END ITEM IDENTIFICATIONAIR SYSTEM AP. HIGH PRESSURE AIR DISTRIBUTION
MATERIALSTEEL COMP 316 BODY
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is CVHG12Y21S?
CVHG12Y21S is a VALVE,CHECK.
What is the NSN for CVHG12Y21S?
CVHG12Y21S is cataloged in the U.S. Government catalog under NSN 4820-01-680-3837. 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.