Posi-Trap®
Single Stage Vacuum Inlet Trap
- Positive Flow
- No "blow-by"
- Variety of elements
- Positive trapping
- Easy changing and cleaning
This versatile foreline trap prevents contaminants from entering the vacuum pump and protects the system from pump fluid contamination.
The flow of the effluent gas is directed through the inlet port to the filter elements. Unlike other traps, the filter elements of the POSI-TRAP® are sealed at both the inlet and the exhaust ends, eliminating blow-by and maintaining a positive flow through the elements. This means all contaminants must pass through the filter medium.
Choose from stainless steel gauze, copper gauze, molecular sieve, SodaSorb®, activated charcoal, and PolyPro (2, 5, and 20 microns). One (4" Posi-Trap) or four (8" Posi-Trap) filter elements are required per trap .
Download an Acrobat® PDF file for more detailed information.
Other filter media is available. We can also customize filters for your specific application. For more information on filter media and applications, click here.
| SPECIFICATIONS | |
| Construction | Stainless steel |
| Seals | Buna N O-rings |
| Dimensions | Refer to Installation Drawings |
| MV Products offers several interchangeable inserts: | |
| Type | Description |
| Copper gauze | Large surface area traps condensable particles and oil vapors |
| Stainless steel gauze | Same as copper gauze, but with added corrosion protection |
| Molecular sieve | Reduces mechanical pump backstreaming and traps water vapor |
| Sodasorb® | Minimizes migration of corrosive chemicals and neutralizes acidic vapors |
| Activated charcoal | Removes organic vapors |
| PolyPro 2μm | Traps high volumes of solids and particulates as small as 2 microns; available in 3 sizes |
| PolyPro 5μm | Same as above |
| PolyPro 20μm | Same as above |
| INSTALLATION DRAWINGS | |
| Click following links to see drawings: | |
| 4" Posi-Trap Models | |
| 8" Posi-Trap Models | |
| ORDERING INFORMATION | ||
| Description | Part Number 4" Size | Part Number 8" Size |
| Straight-Through POSI-TRAP: | ||
| With hose terminations | 330000 | 340000 |
| NW 25 flanges | 330025 | - |
| NW 40 flanges | 330040 | 340040 |
| NW 50 flanges | - | 340050 |
| Right Angle POSI-TRAP | ||
| With hose terminations | 335000 | 345000 |
| NW 25 flanges | 335025 | - |
| NW 40 flanges | 335040 | 345040 |
| NW 50 flanges | - | 345050 |
| Filter Elements | ||
| (Quantity discounts for ten or more) | Refer to chart below | |
| FILTER MEDIA | |
| Description | Part Number |
| Copper gauze | 300905 |
| Stainless steel gauze | 300915 |
| Molecular sieve | 300925 |
| Sodasorb® | 300935 |
| Activated charcoal | 300945 |
| PolyPro 2m | 400925 |
| PolyPro 5m | 400935 |
| PolyPro 20m | 400945 |
