The Valve,stop-Check, cataloged under National Stock Number 4820-01-021-4618, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is P J Valves Inc. Government technical data includes 27 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-021-4618 |
| Primary Part Number | D1831 |
| Item Name | Valve,stop-Check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | P J Valves Inc |
| Status | ACTIVE |
| Nominal Thickness | 1.250 INCHES ALL ENDS IN |
| Bonnet Attachment Method | BOLTED |
| Second Connection Face to Centerline Distance | 6.000 INCHES IN |
| Raised Face Nominal Diameter | 2.875 INCHES ALL ENDS IN |
| Nondefinitive Spec/std Data | VIII TYPE |
| Operating Pressure | 1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Specification/standard Data | 81349-DOD-V-24675 GOVERNMENT SPECIFICATION |
| Style Designator | ANGLE |
| Material | NICKEL ALLOY STEM |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Valve Operation Method | MANUAL |
| Connection Type | FLANGE ALL ENDS |
| Flange Face Design | RAISED STRAIGHT ALL ENDS |
| Material | NICKEL ALLOY SEAT |
| Mounting Position | VERTICAL |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Bolt Hole Quantity | 4 ALL ENDS |
| Flow Control Device | DISK |
| Raised Face Nominal Height | 0.250 INCHES ALL ENDS IN |
| Bolt Circle Nominal Diameter | 4.875 INCHES ALL ENDS IN |
| Bolt Hole Nominal Diameter | 1.125 INCHES ALL ENDS IN |
| Bonnet Type | OUTSIDE SCREW-YOKE |
| First Connection Face to Centerline Distance | 6.000 INCHES IN |
| Nominal Outside Diameter | 7.000 INCHES ALL ENDS IN |
| Material Document and Classification | QQ-N-288, COMP E FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Features Provided | BONNET PACKING |
| Material | NICKEL ALLOY BODY |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| D1831 | P J Valves Inc (USA) |
| D1831-1-1/2IN | P J Valves Inc (USA) |
| D1831-1 1-2INAN | P J Valves Inc (USA) |
| CS4820-0102 TYPE V111 | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| CS4820-0102 | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| DOD-V-24675 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| D1831-1-1 1-2INALSTP CHK | P J Valves Inc (USA) |
NSN 4820-01-021-4618 is a Valve,stop-Check, manufactured by P J Valves Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-021-4618 has 7 cross-referenced part numbers: D1831 (P J Valves Inc), D1831-1-1/2IN (P J Valves Inc), D1831-1 1-2INAN (P J Valves Inc), CS4820-0102 TYPE V111 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)), CS4820-0102 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)) and 2 more.
There are 4 known substitutes for 4820-01-021-4618: 4820-01-017-1200, 4820-01-017-2600, 5999-01-027-2631 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for D1831: Nominal Thickness: 1.250 INCHES ALL ENDS IN; Bonnet Attachment Method: BOLTED; Second Connection Face to Centerline Distance: 6.000 INCHES IN; Raised Face Nominal Diameter: 2.875 INCHES ALL ENDS IN. 27 total characteristics are documented in the Federal Logistics Information System.