PartsTable
Technical Data Sheet
PartsTable / COMPONENT / MD-71GG
MD-71GG ✓ 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 SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYURETHANE OVERALL, seat_radius: 0.281 INCHES NOMINAL IN, overall_height: 0.250 INCHES NOMINAL IN, special_features: MEARTHANE VALVE SEAT MATERIAL, style_designator: PLAIN, body_inside_diameter: 0.562 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-824-5687, 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
MD-71GG
NSN: 4820-00-824-5687
FSC: 4820
CAGE: 04612 — RONCI MACHINE CO (USA)
SPECIFICATIONS
materialPLASTIC POLYURETHANE OVERALL
seat_radius0.281 INCHES NOMINAL IN
overall_height0.250 INCHES NOMINAL IN
special_featuresMEARTHANE VALVE SEAT MATERIAL
style_designatorPLAIN
body_inside_diameter0.562 INCHES NOMINAL IN
body_outside_diameter1.0620 INCHES NOMINAL IN
seating_surface_shapeRADIAL
end_item_identificationNSSN CLASS SUBMARINE, TOWED SONAR HULL AND BACKUP VALVE
material_document_and_classificationMD-71GG MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN4820-00-824-5687
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: MD-71GG · 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
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: MATERIAL CONTROLLED IAW SS800-AG-MAN-010/P-9290 SYSTEM CERTIFICATION PRODURES AND CRITERIA MANUAL FOR DEEP SUBMERGENCE SYSTEMS; CRITICAL ITEM FOR SAFETY AND SURVIVAL OF DEEP SUBMERGENCE RESEARCH AND RESCUE VEHICLES AS DIFFERENTIATED BY SPECIAL TEST FEATURES
TECHNICAL CHARACTERISTICS (FLIS)
CRITICALITY CODE JUSTIFICATIONZZZY
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL CONTROLLED IAW SS800-AG-MAN-010/P-9290 SYSTEM CERTIFICATION PRODURES AND CRITERIA MANUAL FOR DEEP SUBMERGENCE SYSTEMS; CRITICAL ITEM FOR SAFETY AND SURVIVAL OF DEEP SUBMERGENCE RESEARCH AND RESCUE VEHICLES AS DIFFERENTIATED BY SPECIAL TEST FEATURES
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
MD-71GGInterchangeable
interchangeable cross-reference
interchangeable
MD71GG S5Interchangeable
interchangeable cross-reference
interchangeable
264080101-0012Interchangeable
interchangeable cross-reference
interchangeable
2640-801X01PC 12Interchangeable
interchangeable cross-reference
interchangeable
56-97-0417Interchangeable
interchangeable cross-reference
interchangeable
563-7286781Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy MD-71GG?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is MD-71GG?
MD-71GG is a SEAT,VALVE.
What parts can replace MD-71GG?
There are 21 known substitutes for MD-71GG: MD-71GG, MD71GG S5, 264080101-0012 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MD-71GG?
MD-71GG is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-824-5687. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — MD-71GG

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026