NSN 4820-00-142-1020 Repair Services

Safety Relief Valve Overhaul, Repair, and Maintenance

MPN: R6134AL, R-6134-AL

Pricing and Lead Time Quote

Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-142-1020 safety relief valve
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NSN 4820001421020


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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 4820-00-142-1020 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 4820-00-142-1020 can be offered in repaired, serviceable, overhauled, or inspected conditions.
National Stock Number (NSN) 4820-00-142-1020
Categorization Safety or relief valves
Repairability Code H

If condemned or uneconomically repairable, then dispose at intermediate level.

Approximate Weight 175.0lb
Flow Control Device Disk
Bonnet Type Exposed spring
Bonnet Attachment Method Bolted
Disk Loading Method Spring
Valve Discharge Flow Rate 49500.0 pounds per hour
Bolt Hole Quantity 9 2nd end
Valve Operation Method Automatic or manual
Flange Shape Round with holes 2nd end
Connection Type Flange 1st end
Features Provided Valve stem lock shield
Valve Size 2.500 inches
Opening Pressure Setting 630.0 pounds per square inch
Outside Diameter 8.688 inches 2nd end
Thickness 1.125 inches 1st end
First Connection Face To Centerline Distance 6.000 inches
Bolt Hole Diameter 0.812 inches 2nd end
Second Connection Face To Centerline Distance 5.312 inches
Bolt Circle Diameter 7.125 inches 2nd end
Flange Face Design Plain 2nd end
Raised Face Height 0.250 inches 1st end
Raised Face Diameter 4.125 inches 1st end
Style Designator Angle flanged ends

Part Numbers

Part Number Company RNAAC (Repair Depot)
R6134AL DRESSER, INC. HD - NAVAL INVENTORY CONTROL POINT
R-6134-AL ASHCROFT INC. HD - NAVAL INVENTORY CONTROL POINT