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CVHF8Y21S — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

CVHF8Y21S: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 BODY, valve_size: 0.42 INCHES IN, flange_shape: HEXAGON ALL ENDS, nominal_length: 3.61 INCHES ALL ENDS IN, special_features: SEAL MATERIAL: VITON; FITTING TYPE: FEMALE NPT; CRACK PRESSURE: 1.0 PSIG, style_designator: STRAIGHT THRU FLANGED ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-680-1149, 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
CVHF8Y21S
NSN: 4820-01-680-1149
FSC: 4820 — Valves, Nonpowered
CAGE: 28968 — CIRCOR INSTRUMENTATION TECHNOLOGIES, INC. DBA HOKE GYROLOK (USA)
SPECIFICATIONS
materialSTEEL COMP 316 BODY
valve_size0.42 INCHES IN
flange_shapeHEXAGON ALL ENDS
nominal_length3.61 INCHES ALL ENDS IN
special_featuresSEAL MATERIAL: VITON; FITTING TYPE: FEMALE NPT; CRACK PRESSURE: 1.0 PSIG
style_designatorSTRAIGHT THRU FLANGED ENDS
mounting_positionHORIZONTAL
nominal_pipe_size_accommodated0.5 INCHES ALL ENDS IN
part_name_assigned_by_controlling_agencyCHECK VALUE
NSN4820-01-680-1149
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: CVHF8Y21S · 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
•
FLANGE SHAPE: HEXAGON ALL ENDS
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.5 INCHES ALL ENDS IN
•
NOMINAL LENGTH: 3.61 INCHES ALL ENDS IN
•
MOUNTING POSITION: HORIZONTAL
•
STYLE DESIGNATOR: STRAIGHT THRU FLANGED ENDS
•
VALVE SIZE: 0.42 INCHES IN
TECHNICAL CHARACTERISTICS
FLANGE SHAPEHEXAGON ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED0.5 INCHES ALL ENDS IN
NOMINAL LENGTH3.61 INCHES ALL ENDS IN
MOUNTING POSITIONHORIZONTAL
STYLE DESIGNATORSTRAIGHT THRU FLANGED ENDS
VALVE SIZE0.42 INCHES IN
SPECIAL FEATURESSEAL MATERIAL: VITON; FITTING TYPE: FEMALE NPT; CRACK PRESSURE: 1.0 PSIG
PART NAME ASSIGNED BY CONTROLLING AGENCYCHECK VALUE
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 CVHF8Y21S?
CVHF8Y21S is a VALVE,CHECK.
What is the NSN for CVHF8Y21S?
CVHF8Y21S is cataloged in the U.S. Government catalog under NSN 4820-01-680-1149. 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.