NSN 4820-00-231-2308 Repair Services

Safety Relief Valve Overhaul, Repair, and Maintenance

MPN: F6201TT, S5103-1195450, S5103-1195451, F6201TTMODEL1553A,3TO6IN

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-231-2308 safety relief valve
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NSN 4820002312308


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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 4820-00-231-2308 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 4820-00-231-2308 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-231-2308
Categorization Safety or relief valves
Repairability Code

Approximate Weight 0.0lb
Flow Control Device Disk
Bonnet Type Exposed spring
Bonnet Attachment Method Bolted
Disk Loading Method Spring
Bolt Hole Quantity 8 2nd end
Maximum Operating Temp 650.0 degrees fahrenheit single response
Valve Operation Method Automatic or manual
Flange Shape Round with holes 2nd end
Connection Type Flange 1st end
Features Provided Valve stem lock shield and bonnet packing
Valve Size 3.000 inches
Maximum Operating Pressure 600.0 pounds per square inch single response
Opening Pressure Setting 500.0 pounds per square inch
Outside Diameter 8.250 inches 1st end
Thickness 1.250 inches 1st end
First Connection Face To Centerline Distance 8.688 inches
Bolt Hole Diameter 0.875 inches 2nd end
Second Connection Face To Centerline Distance 8.188 inches
Bolt Circle Diameter 9.500 inches 2nd end
Flange Face Design Raised straight 2nd end
Raised Face Height 0.250 inches 1st end
Raised Face Diameter 8.500 inches 2nd end
Material Stainless steel stem
Media For Which Designed Steam single response
Style Designator Angle flanged ends
Reference Number Differentiating Characteristics As differentiated by flanged connection sizes

Part Numbers

Part Number Company RNAAC (Repair Depot)
F6201TT ASHCROFT INC. HD - NAVAL INVENTORY CONTROL POINT
S5103-1195450 NAVAL SHIP SYSTEMS COMMAND HD - NAVAL INVENTORY CONTROL POINT
S5103-1195451 NAVAL SHIP SYSTEMS COMMAND HD - NAVAL INVENTORY CONTROL POINT
F6201TT KOMDRESCO CANADA INC HD - NAVAL INVENTORY CONTROL POINT
F6201TTMODEL1553A,3TO6IN ASHCROFT INC. ZZ - USA