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Technical Data Sheet
PartsTable / COMPONENT / VRK-4-N
VRK-4-N ✓ 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 REPAIR KIT,VALVE is a the manufacturer industrial component. Key specifications include shape: STRAIGHT, diameter: 1.000 INCHES NOMINAL IN, material: STEEL, mounting_shank: INCLUDED, connection_type: THREADED EXTERNAL PIPE THIRD END, overall_diameter: 6.0 MILLIMETERS NOMINAL MM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-513-5931, 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
VRK-4-N
NSN: 4820-01-513-5931
FSC: 4820
CAGE: 1DRT7 — CIRCOR AEROSPACE INC (USA)
SPECIFICATIONS
shapeSTRAIGHT
diameter1.000 INCHES NOMINAL IN
materialSTEEL
mounting_shankINCLUDED
connection_typeTHREADED EXTERNAL PIPE THIRD END
overall_diameter6.0 MILLIMETERS NOMINAL MM
special_featuresPANEL THICKNESS 3/32";CLEARANCE HOLE .140 (3,56) FOR NUMBER 6 SCREW
style_designatorCYLINDRICAL SHAPE
surface_treatmentPASSIVATE OVERALL
removability_featureNOT INCLUDED
cutter_tooth_cut_styleMEDIUM
cutting_surface_length38.0 MILLIMETERS NOMINAL MM
NSN4820-01-513-5931
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: VRK-4-N · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
7587-25Interchangeable
interchangeable cross-reference
interchangeable
A50633Interchangeable
interchangeable cross-reference
interchangeable
433924-2Interchangeable
interchangeable cross-reference
interchangeable
50633Interchangeable
interchangeable cross-reference
interchangeable
EW-2747Interchangeable
interchangeable cross-reference
interchangeable
KX1403PC32Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is VRK-4-N?
VRK-4-N is a REPAIR KIT,VALVE.
What parts can replace VRK-4-N?
There are 11 known substitutes for VRK-4-N: 7587-25, A50633, 433924-2 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for VRK-4-N?
VRK-4-N is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-513-5931. 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