The Valve,check, cataloged under National Stock Number 4820-01-124-3687, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-01-124-3687 |
| Primary Part Number | SS70-912S-4J |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | CANCELLED |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Style Designator | TEE |
| Media for Which Designed | HYDRAULIC FLUID, PETROLEUM BASE SINGLE RESPONSE |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Maximum Operating Temp | 275.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Flow Control Device | POPPET |
| Valve Operation Method | AUTOMATIC |
| Thread Class | 3A ALL ENDS A |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Material | STEEL COMP 304 BODY |
| Connection Style | FLARELESS ALL ENDS |
| Mounting Position | VERTICAL |
| Material | STEEL COMP 440C FLOW CONTROL DEVICE |
| Nominal Thread Size | 0.438 INCHES ALL ENDS IN |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| Seat Angle | 12.0 DEGREES ALL ENDS |
| Surface Treatment | PASSIVATE |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| S70 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| SS70-91ZS-4J | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 70651-03304-043 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 4820PL1952109 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| SS70 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| SS70-912S-4J PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 2C8410-4J | Crissair Inc Div Esco Technologies (USA) |
NSN 4820-01-124-3687 is a Valve,check, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-01-124-3687 has 7 cross-referenced part numbers: S70 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), SS70-91ZS-4J (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 70651-03304-043 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 4820PL1952109 (Jednolity Indeks Materialowy - Uniform Material Index), SS70 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp) and 2 more.
There are 9 known substitutes for 4820-01-124-3687: 4820-00-124-8890, 2540-00-275-9389, 9540-00-596-3047 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for SS70-912S-4J: Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Style Designator: TEE; Media for Which Designed: HYDRAULIC FLUID, PETROLEUM BASE SINGLE RESPONSE; Connection Type: THREADED EXTERNAL TUBE ALL ENDS. 17 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-01-124-3687 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.