NSN 4820-00-247-0643 Repair Services

Fluid Pressure Regulating Valve Overhaul, Repair, and Maintenance

MPN: N256ALT2, DD445S4810-230ALT2

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-247-0643 fluid pressure regulating valve
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NSN 4820002470643


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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 4820-00-247-0643 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 4820-00-247-0643 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-247-0643
Categorization Regulator valves, self-operating, for controlling variables such as temperature, pressure, flow and liquid level
Repairability Code

Approximate Weight 0.0lb
Body Material Bronze
First End Flange Outside Diameter 5.375 inches
Body Style Straight thru
Stem Material Steel, corrosion resisting
Media For Which Designed Steam
First End Connection Type Plain face flange
First End Style Designator Plain
First End Flange Shape Style Round w/ bolt holes
First End Flange Thickness 0.562 inches
First End Bolt Hole Quantity 5
First End Bolt Hole Diameter 0.687 inches
First End Bolt Circle Diameter 4.062 inches
Second End Relationship With First End Identical
Seat Material Steel, corrosion resisting
Face To Face Distance 6.500 inches
Flow Control Device Disk, flat
Flow Control Device Material Steel, corrosion resisting
End Connection Quantity 2
Renewable Seat Ring Type Welded
Outlet Pressure Range +35.0/+60.0 pounds per square inch
Regulation Type Automatic single stage
Valve Stem Design Single seat
Valve Loading Method Dome
Remote Actuation Method Diaphragm
Maximum Inlet Pressure Rating 165.0 pounds per square inch
Filter Not included
Reference Number Differentiating Characteristics As differentiated by size 1-1/4 inch and inlet pressure

Part Numbers

Part Number Company RNAAC (Repair Depot)
N256ALT2 GROVE VALVE OPERATIONS HD - NAVAL INVENTORY CONTROL POINT
DD445S4810-230ALT2 NAVAL SHIP SYSTEMS COMMAND HD - NAVAL INVENTORY CONTROL POINT