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HPET Series High Pressure Refrigerated Air Dryers
| PRODUCT | TYPE | FLOW | RATING |
|---|---|---|---|
| Refrigerated Air Dryer | High Pressure, previous generation | 30 to 3,000 SCFM | 725 psig maximum working pressure |
Specifications
Configuration & Size
Sizes:
30, 45, 65, 95, 165, 200, 300, 500, 750, 1,000, 1,250, 1,750, 2,000, 3,000 SCFM
Power:
115/1/60 to 200 SCFM (208-230 V optional at 165-200), 460/3/60 from 300 SCFM
Connections:
1/2 in NPT to 95 SCFM, 1-1/2 in NPT to 1,000, 3 in NPT from 1,250
Replaced by:
HHPR Series, size for size
Features
- 316 stainless steel brazed-plate heat exchangers rated for the 725 psig working pressure of a PET line
- Hermetically sealed refrigeration system with no shaft seal to weep
- Filter-separator with a timed electric condensate drain as standard
- Model number equals the refrigeration compressor horsepower: an HPET-2.5 carries a 2.5 hp compressor for 750 SCFM
Built for 725 psig blow-molding air
Stainless exchangers on a hermetic refrigeration circuit
The HPET Series was the 725 psig refrigerated dryer for PET bottle blow-molding and other 40 to 50 bar air systems: fourteen sizes from 30 to 3,000 SCFM, each named for the horsepower of its refrigeration compressor, with 316 stainless steel brazed-plate exchangers, a hermetically sealed refrigeration circuit and a filter-separator with a timed electric drain. Air-cooled and water-cooled condensers were offered, on 115 V single phase through 200 SCFM and 460 V three phase above. It is the previous generation. Replacements ship from the HHPR Series size for size, and the HPET part numbers stay listed here so an old dryer can be matched to its current equivalent.
How the HHPR takes over. HPET-0.5 at 165 SCFM goes to the HHPR-200, HPET-1.0 at 300 to the HHPR-300, HPET-2.5 at 750 to the HHPR-750, HPET-7.5 at 2,000 to the HHPR-2000; The three smallest HPET sizes, 30 to 95 SCFM, are covered by the HHPR-115, the smallest current size; The HPET-10 at 3,000 SCFM is matched to the HHPR-2400 on corrected flow or to two dryers in parallel; Working pressure changes from 725 to 680 psig, which still covers the 40 bar (580 psig) blow-molding standard.
Cross-referencing an HPET. Read the flow from the table above, not from the model number, since the number is compressor horsepower; Confirm the line pressure: the HHPR is rated 680 psig, so a system that runs at 700 psig or more needs a different answer; Match the HHPR at or above the flow, and note that the small sizes move to a solenoid drain and the large sizes to Class 300 flanges.
HPET Series Part Numbers
| Part Number | SCFM | Connection | Voltage | Power | Dimensions (in) | Weight (lb) |
|---|---|---|---|---|---|---|
| HPET-0.17 | 30 | 1/2 in NPT | 115/1/60 | 0.17 hp | 26 x 18 x 21 | 95 |
| HPET-0.2 | 45 | 1/2 in NPT | 115/1/60 | 0.2 hp | 26 x 18 x 21 | 95 |
| HPET-0.25 | 65 | 1/2 in NPT | 115/1/60 | 0.25 hp | 26 x 18 x 21 | 95 |
| HPET-0.33 | 95 | 1/2 in NPT | 115/1/60 | 0.33 hp | 26 x 18 x 21 | 95 |
| HPET-0.5 | 165 | 1-1/2 in NPT | 115/1/60 or 208-230/1/60 | 0.5 hp | 37.6 x 25.6 x 19.6 | 251 |
| HPET-0.75 | 200 | 1-1/2 in NPT | 115/1/60 or 208-230/1/60 | 0.75 hp | 37.6 x 25.6 x 19.6 | 279 |
| HPET-1.0 | 300 | 1-1/2 in NPT | 460/3/60 | 1.0 hp | 38.6 x 32.2 x 32.2 | 425 |
| HPET-1.5 | 500 | 1-1/2 in NPT | 460/3/60 | 1.5 hp | 38.6 x 32.2 x 32.2 | 463 |
| HPET-2.5 | 750 | 1-1/2 in NPT | 460/3/60 | 2.5 hp | 58.1 x 32.2 x 41.6 | 691 |
| HPET-3.5 | 1,000 | 1-1/2 in NPT | 460/3/60 | 3.5 hp | 58.1 x 32.2 x 41.6 | 734 |
| HPET-4 | 1,250 | 3 in NPT | 460/3/60 | 4 hp | 59 x 52 x 52 | 889 |
| HPET-6 | 1,750 | 3 in NPT | 460/3/60 | 6 hp | 59 x 52 x 52 | 939 |
| HPET-7.5 | 2,000 | 3 in NPT | 460/3/60 | 7.5 hp | 59 x 52 x 52 | 1,204 |
| HPET-10 | 3,000 | 3 in NPT | 460/3/60 | 10 hp | 59 x 52 x 52 | 1,329 |
Flows are the catalog ratings for each size; the model number is the refrigeration compressor horsepower, and dimensions are height x width x depth. These part numbers are the previous generation; new orders are supplied from the HHPR Series, which is the direct replacement.
HPET Series Applications
Cabinets and connections by size
Four cabinet groups from a 95 lb bench unit to a 1,329 lb floor cabinet.
The HPET-0.17 through HPET-0.33, 30 to 95 SCFM, share a 26 x 18 x 21 in cabinet at 95 lb with 1/2 in NPT connections on 115 V. The HPET-0.5 and HPET-0.75 at 165 and 200 SCFM are 37.6 x 25.6 x 19.6 in at 251 and 279 lb on 1-1/2 in NPT, available in 115 V or 208 to 230 V single phase. The HPET-1.0 and HPET-1.5 are 38.6 x 32.2 x 32.2 in at 425 and 463 lb, and the HPET-2.5 and HPET-3.5 are 58.1 x 32.2 x 41.6 in at 691 and 734 lb, all on 1-1/2 in NPT and 460 V.
The four largest, 1,250 to 3,000 SCFM, share a 59 x 52 x 52 in cabinet at 889 to 1,329 lb with 3 in NPT connections. Pressure drop ran from 1.7 psid on the 165 SCFM unit to 6.2 psid on the 1,750. When an HHPR replaces one of these, check the connections: the current line uses male NPT through 600 SCFM and Class 300 raised-face flanges from 750 SCFM up, so a flanged spool or an adapter is usually part of the swap on the larger sizes.
The outline above is the HPET cabinet; the HHPR drawing for the replacement size comes with the quote.
Common FAQs
30 to 3,000 SCFM
- Sizes: 30, 45, 65, 95, 165, 200, 300, 500, 750, 1,000, 1,250, 1,750, 2,000, 3,000 SCFM
- Power: 115/1/60 to 200 SCFM (208-230 V optional at 165-200), 460/3/60 from 300 SCFM
- Connections: 1/2 in NPT to 95 SCFM, 1-1/2 in NPT to 1,000, 3 in NPT from 1,250
- Replaced by: HHPR Series, size for size
- Max working pressure: 725 psig
- Pressure dew point: 38°F
- Exchangers: 316 stainless steel brazed plate
- Cooling: Air- or water-cooled
- Listing: UL/CSA
The HPET Series is the previous generation. New orders are supplied from the HHPR Series, its direct replacement; the part numbers below are listed for matching an installed unit.
