NSN 4820-00-187-6698 Repair Services

Stop-check Valve Overhaul, Repair, and Maintenance

MPN: 4578FNPP

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-187-6698 stop-check valve
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NSN 4820001876698


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AS9120B:2015 ISO 9001 Audited and Certified

FAA and EASA Part 145 Certified Repair Stations Ensuring the highest standards of quality and compliance for our clients' needs.

We specialize in the repair and refurbishment of nsn components. From mechanical assemblies to rotor blades, our comprehensive capabilities cover a wide range of NSN parts, providing cost effective solutions to extend the operational life of vital equipment.

NSN 4820-00-187-6698 has been designated as a repairable item and has been included in our capabilities catalog. If you require overhaul or repair services use the form on this page to send us your information. We will provide you with a lead time and price quote.

Repairability and Datasheet

NSN 4820-00-187-6698 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-187-6698
Categorization Check valves of materials other than copper, iron or steel
Repairability Code D

When repair is beyond lower level maintenance capability, evacuate the item to depot. disposal is not authorized below wholesale level.

Approximate Weight 101.0lb
Offset Distance 2.250 inches
Flow Control Device Poppet
Bonnet Type Inside screw
Bonnet Attachment Method Bolted
Renewable Seat Ring Type Threaded
Valve Operation Method Manual
Flange Shape Round 1st end
Connection Type Flange 1st end
Mounting Position Horizontal
Features Provided Bonnet packing
Valve Size 1.500 inches
Maximum Operating Pressure 600.0 pounds per square inch single response
Criticality Code Justification Zzzy
Outside Diameter 6.125 inches 1st end
Face To Face Distance 12.000 inches
Thickness 0.875 inches 1st end
Flange Face Design Raised straight 1st end
Raised Face Height 0.250 inches 1st end
Raised Face Diameter 2.875 inches 1st end
Material Nickel alloy 400 stem
Media For Which Designed Water-oil-gas single response
Style Designator Straight through w/offset flanged ends
Reference Number Differentiating Characteristics Material will be in accordance with ships parts control center activity hx quality control, manufacturing and testing specifications

Part Numbers

Part Number Company RNAAC (Repair Depot)
4578FNPP ATWOOD & MORRILL CO. INC. HX - NAVAL ICP