The Valve,restrictor Check, cataloged under National Stock Number 4820-01-171-9440, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Crissair Inc Div Esco Technologies. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-171-9440 |
| Primary Part Number | 9R3224 |
| Item Name | Valve,restrictor Check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Crissair Inc Div Esco Technologies |
| Status | ACTIVE |
| Connection Type | THREADED EXTERNAL BOSS ALL ENDS |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Thread Quantity Per Inch | 12 ALL ENDS |
| Maximum Operating Temp | 275.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Flow Control Device | POPPET |
| Valve Operation Method | AUTOMATIC |
| Mounting Position | HORIZONTAL |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) ALL ENDS |
| Material | STEEL COMP 630 BODY |
| Nominal Thread Size | 1.0625 INCHES ALL ENDS IN |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Class | 3A ALL ENDS A |
| Material Document and Classification | QQ-S-763 CL 440C FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material | STEEL COMP 440C FLOW CONTROL DEVICE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-171-9440 is a Valve,restrictor Check, manufactured by Crissair Inc Div Esco Technologies, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-171-9440 has 2 cross-referenced part numbers: 50397 (Mission Systems Davenport Inc.), 9R3224 (Crissair Inc Div Esco Technologies).
There are 4 known substitutes for 4820-01-171-9440: 2930-00-232-5873, 5930-00-805-4138, 3020-01-146-5913 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 9R3224: Connection Type: THREADED EXTERNAL BOSS ALL ENDS; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS; Thread Direction: RIGHT-HAND ALL ENDS; Thread Quantity Per Inch: 12 ALL ENDS. 18 total characteristics are documented in the Federal Logistics Information System.