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VR-300 — VALVE,VACUUM REGULATING

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

VR-300: VALVE,VACUUM REGULATING.

The VALVE,VACUUM REGULATING is a the manufacturer industrial component. Key specifications include body_style: SINGLE CONNECTION, STRAIGHT FLOW, body_material: COPPER ALLOY, features_provided: SPRING LOADED, temp_adjustability: ADJUSTABLE, flow_control_device: DISK, FLAT, end_item_identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-426-4888, 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
VR-300
NSN: 4820-01-426-4888
NIINs: 014264888, 014283173
FSC: 4820 — Valves, Nonpowered
CAGE: 17181 — GADREN MACHINE CO INC DBA GADE FLOAT VALVES (USA)
SPECIFICATIONS
body_styleSINGLE CONNECTION, STRAIGHT FLOW
body_materialCOPPER ALLOY
features_providedSPRING LOADED
temp_adjustabilityADJUSTABLE
flow_control_deviceDISK, FLAT
end_connection_quantity1
end_item_identificationSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
first_end_connection_typeTHREADED EXTERNAL PIPE
first_end_style_designatorPLAIN
first_end_thread_directionRIGHT-HAND
first_end_nominal_thread_size3.000 INCHES IN
valve_design_control_activity17181
NSN4820-01-426-4888
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: VR-300 · 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
•
VALVE TYPE FOR WHICH DESIGNED: RELIEF
•
VALVE MODEL NUMBER FOR WHICH DESIGNED: VR-300
•
FEATURES PROVIDED: SPRING LOADED
•
VALVE SIZE FOR WHICH DESIGNED: 3.000 INCHES IN
•
VALVE DESIGN CONTROL ACTIVITY: 17181
TECHNICAL CHARACTERISTICS
VALVE TYPE FOR WHICH DESIGNEDRELIEF
VALVE MODEL NUMBER FOR WHICH DESIGNEDVR-300
FEATURES PROVIDEDSPRING LOADED
VALVE SIZE FOR WHICH DESIGNED3.000 INCHES IN
VALVE DESIGN CONTROL ACTIVITY17181
END ITEM IDENTIFICATIONSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
SUBSTITUTES & CROSS-REFERENCES 1
300-VR ITEM 1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is VR-300?
VR-300 is a VALVE,VACUUM REGULATING.
What parts can replace VR-300?
There is 1 known substitute for VR-300: 300-VR ITEM 1. Substitute compatibility should be verified for your specific system.
What is the NSN for VR-300?
VR-300 is cataloged in the U.S. Government catalog under NSN 4820-01-426-4888. 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.