NSN 4820-00-137-7991 Repair Services
Safety Relief Valve Overhaul, Repair, and Maintenance
MPN: 20129Q91M, A15634REVA, 20129REVAANDA15634REVA
Pricing and Lead Time Quote
Submit this form and receive an overhaul/repair pricing and lead time quote for NSN 4820-00-137-7991 safety relief valveFAA 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 4820-00-137-7991 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 4820-00-137-7991 can be offered in repaired, serviceable, overhauled, or inspected conditions.| National Stock Number (NSN) | 4820-00-137-7991 |
| Categorization | Safety or relief valves |
| 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 | 37.5lb |
| Flow Control Device | Disk |
| Bonnet Type | Inside spring |
| Bonnet Attachment Method | Bolted |
| Disk Loading Method | Spring |
| Maximum Operating Temp | 300.0 degrees fahrenheit single response |
| Valve Operation Method | Automatic |
| Flange Shape | Round 1st end |
| Connection Type | Flange 1st end |
| Features Provided | Bonnet packing and pressure tight outlet side |
| Adjustable Pressure Range | +163.0/+186.0 pounds per square inch |
| Maximum Operating Pressure | 210.0 pounds per square inch single response |
| Criticality Code Justification | Zzzy |
| Opening Pressure Setting | 175.0 pounds per square inch |
| Flange Face Design | Plain 1st end |
| Material | Nickel alloy stem |
| Media For Which Designed | Water, fresh single response |
| Style Designator | Angle |
| 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) |
|---|---|---|
| 20129Q91M | ANDERSON GREENWOOD LP | HD - NAVAL INVENTORY CONTROL POINT |
| A15634REVA | ANDERSON GREENWOOD LP | HX - NAVAL ICP |
| 20129REVAANDA15634REVA | ANDERSON GREENWOOD LP | HX - NAVAL ICP |