PartsTable
Technical Data Sheet

1982C-1 1/2X2 — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

1982C-1 1/2X2: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING BODY, bonnet_type: INSIDE SCREW, style_designator: ANGLE, disk_loading_method: SPRING, flow_control_device: DISK, valve_operation_method: AUTOMATIC. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-290-7819, 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
1982C-1 1/2X2
NSN: 4820-01-290-7819
FSC: 4820 — Valves, Nonpowered
CAGE: 38056 — ASHCROFT INC DBA HEISE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING BODY
bonnet_typeINSIDE SCREW
style_designatorANGLE
disk_loading_methodSPRING
flow_control_deviceDISK
valve_operation_methodAUTOMATIC
bonnet_attachment_methodTHREADED
adjustable_pressure_range+0.0 TO 300.0 POUNDS PER SQUARE INCH LBS
NSN4820-01-290-7819
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1982C-1 1/2X2 · 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
•
FLOW CONTROL DEVICE: DISK
•
STYLE DESIGNATOR: ANGLE
•
ADJUSTABLE PRESSURE RANGE: +0.0 TO 300.0 POUNDS PER SQUARE INCH LBS
•
BONNET TYPE: INSIDE SCREW
•
DISK LOADING METHOD: SPRING
•
BONNET ATTACHMENT METHOD: THREADED
•
MATERIAL: STEEL CORROSION RESISTING BODY
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEDISK
STYLE DESIGNATORANGLE
ADJUSTABLE PRESSURE RANGE+0.0 TO 300.0 POUNDS PER SQUARE INCH LBS
BONNET TYPEINSIDE SCREW
DISK LOADING METHODSPRING
BONNET ATTACHMENT METHODTHREADED
MATERIALSTEEL CORROSION RESISTING BODY
VALVE OPERATION METHODAUTOMATIC
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
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1982C-1 1/2X2?
1982C-1 1/2X2 is a VALVE,SAFETY RELIEF.
What is the NSN for 1982C-1 1/2X2?
1982C-1 1/2X2 is cataloged in the U.S. Government catalog under NSN 4820-01-290-7819. 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.