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Technical Data Sheet
PartsTable / COMPONENT / NS-3983 ASSY E
NS-3983 ASSY E ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The PARTS KIT,CHECK VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY FLOW CONTROL DEVICE, connection_type: UNTHREADED INTERNAL PIPE ALL ENDS, connection_style: SOCKET (PIPE) ALL ENDS, style_designator: STRAIGHT THRU, mounting_position: HORIZONTAL, component_quantity: 12. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-063-3879, 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
NS-3983 ASSY E
NSN: 4820-01-063-3879
FSC: 4820
CAGE: 11836 — NATIONAL OILWELL (USA)
SPECIFICATIONS
materialCOPPER ALLOY FLOW CONTROL DEVICE
connection_typeUNTHREADED INTERNAL PIPE ALL ENDS
connection_styleSOCKET (PIPE) ALL ENDS
style_designatorSTRAIGHT THRU
mounting_positionHORIZONTAL
component_quantity12
operating_pressure700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
flow_control_deviceDISK
maximum_operating_temp180.0 FAHRENHEIT SINGLE RESPONSE DEGF
valve_operation_methodAUTOMATIC
media_for_which_designedWATER-OIL-GAS SINGLE RESPONSE
opening_pressure_setting0.5 POUNDS PER SQUARE INCH LBS
NSN4820-01-063-3879
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: NS-3983 ASSY E · 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
•
SUPPLY ITEMS AND QUANTITIES: CLAPPER 1,BUMPER 1,NUT 1,SCREW 1,PIN 1,SEAL 1,BUSHING 4,RETAINER 2
•
COMPONENT QUANTITY: 12
TECHNICAL CHARACTERISTICS (FLIS)
SUPPLY ITEMS AND QUANTITIESCLAPPER 1,BUMPER 1,NUT 1,SCREW 1,PIN 1,SEAL 1,BUSHING 4,RETAINER 2
COMPONENT QUANTITY12
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
S2006Interchangeable
interchangeable cross-reference
interchangeable
2620-927X9 PC 26Interchangeable
interchangeable cross-reference
interchangeable
S2006BRTInterchangeable
interchangeable cross-reference
interchangeable
X-1989Interchangeable
interchangeable cross-reference
interchangeable
S90091/300480Interchangeable
interchangeable cross-reference
interchangeable
NS-3983Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NS-3983 ASSY E?
NS-3983 ASSY E is a PARTS KIT,CHECK VALVE.
What parts can replace NS-3983 ASSY E?
There are 18 known substitutes for NS-3983 ASSY E: S2006, 2620-927X9 PC 26, S2006BRT and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NS-3983 ASSY E?
NS-3983 ASSY E is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-063-3879. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026