The 100004918 Main Valve Internals are for two-stage vacuum valves with a NW25 port and includes Viton seals.
100004918 is compatible with these MKS valves:
| 170-0025K | 172-0025K | 172-1025K | 173-1025K-100V/50 | 
| 173-1025K-120V/50-60 | 173-1025K-208V/50-60 | 173-1025K-220V/50-60 | 173-1025K-24V/50-60 | 
| 173-1025K-24VDC | 182-0025K | 182-1025K | 183-1025K-100V/50 | 
| 183-1025K-120V/50-60 | 183-1025K-208V/50-60 | 183-1025K-220V/50-60 | 183-1025K-24V/50-60 | 
| 183-1025K-24VDC | V2-025-AK-063-CNVNH | V2-025-AK-063-CNVNH-T25 | V2-025-AK-125-CLVNH-24D | 
| V2-025-AK-125-MNVNH | V2-025-AK-225-CLVNH | V2-025-AK-225-CLVNH-120 | V2-025-AK-225-CLVNH-24D | 
| V2-025-AK-225-CNVNH | V2-025-AK-225-CNVNH-T12 | V2-025-AK-225-MLVNH-24D | V2-025-AK-225-MNVNH-240 | 
| V2-025-AK-225-MNVNH-24D | V2-025-AK-225-VLVNH-24D | V2-025-AK-225-VNVNH | V2-025-AK-CST-CLVNH | 
| V2-025-AK-CST-CLVNH-240 | V2-025-AK-CST-CLVNH-24D | V2-025-IK-225-CLVNH | V2-025-IK-225-CNVNH | 
| V2-025-IK-225-MLVNH | V2-025-IK-225-MLVNH-24D | V2-025-IK-225-MNVNH | V2-025-IK-225-VNVNH | 
 
                                 
                                 
  
  
  
                                 
								 
						     Ultra-High Velocity Learn More
                        Ultra-High Velocity Learn More