The Valve,check, cataloged under National Stock Number 4820-00-336-9643, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Cartridge Systems Division. 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-336-9643 |
| Primary Part Number | LD1-50-1S |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Cartridge Systems Division |
| Status | ACTIVE |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Material | STEEL FLOW CONTROL DEVICE |
| Flow Control Device | POPPET |
| Valve Operation Method | AUTOMATIC |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Material | PLASTIC PACKING |
| Material | STEEL BODY |
| Nominal Thread Size | 0.500 INCHES ALL ENDS IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Media for Which Designed | HYDRAULIC FLUID, PETROLEUM BASE SINGLE RESPONSE |
| Thread Series Designator | NPT ALL ENDS |
| Material | STEEL SEAT |
| Disk Loading Method | SPRING |
| Offset Distance | 0.562 INCHES IN |
| Style Designator | STRAIGHT THRU W/OFFSET |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 989203 | Bosch Automation Technology (USA) |
| 989263 | Bosch Automation Technology (USA) |
| LD1-50-1S PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Cartridge Systems Division (USA) |
| 1608-4F | Bosch Automation Technology (USA) |
| 1608-4 | Blue Tee Corp. Dba Gefco (USA) |
| XRT-1608-4 PRIMARY | Blue Tee Corp. Dba Gefco (USA) |
| 989254 | Bosch Automation Technology (USA) |
NSN 4820-00-336-9643 is a Valve,check, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Cartridge Systems Division, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-336-9643 has 7 cross-referenced part numbers: 989203 (Bosch Automation Technology), 989263 (Bosch Automation Technology), LD1-50-1S (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Cartridge Systems Division), 1608-4F (Bosch Automation Technology), 1608-4 (Blue Tee Corp. Dba Gefco) and 2 more.
There are 7 known substitutes for 4820-00-336-9643: 5330-00-064-7004, 5310-00-470-5750, 5330-00-813-3521 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for LD1-50-1S: Special Features: FURNISHED W/TWO UNTHD MTG HOLES 0.343 IN. DIA,VALVE IS PILOT OPERATED W/THD INT PILOT PORT 0.250-18 NPT IN; Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Material: STEEL FLOW CONTROL DEVICE; Flow Control Device: POPPET. 18 total characteristics are documented in the Federal Logistics Information System.