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HHPR Series High Pressure Refrigerated Air Dryers
| PRODUCT | TYPE | FLOW | RATING |
|---|---|---|---|
| Refrigerated Air Dryer | High Pressure | 115 to 2,400 SCFM | 680 psig / 120°F inlet |
Specifications
Configuration & Size
Sizes:
115, 150, 200, 300, 600, 750, 1,000, 1,200, 1,600, 2,000, 2,400 SCFM
Power:
115/1/60 to 200 SCFM, 460/3/60 from 300 SCFM; refrigeration compressors of 1 to 9 hp
Connections:
MNPT to 600 SCFM; 3 in and 4 in Class 300 RF flanges from 750 SCFM
Replaces:
HPET Series, size for size
Features
- 680 psig maximum working pressure covers a 40 bar PET system with margin and the compressor's full discharge setting
- At 500 psig and above the air carries a fraction of the water it holds at 100 psig, so the refrigeration circuit is small for the flow: 1 hp at 371 SCFM, 9 hp at 2,410 SCFM
- Air-cooled condensers on every size, so no cooling water is needed at the blow molder
- Electronic controller with dew point display
Rated 680 psig for the blow-molding line
High-pressure air, standard refrigerated dew point
The HHPR Series is the current high-pressure refrigerated dryer, rated 680 psig for PET bottle blow-molding lines and any process that runs compressed air at 40 bar and above. Eleven air-cooled sizes cover 115 to 2,400 SCFM: the three smallest on 115 V single phase with a solenoid drain, the rest on 460 V three phase with a timed electric drain, male NPT connections through 600 SCFM and Class 300 raised-face flanges from 750 SCFM up. An electronic controller shows the dew point, and pressure drop stays between 1.6 and 3.3 psid at rated flow. It replaces the HPET Series size for size.
Drains, connections and voltages by size. HHPR-115, -150 and -200: 115 V single phase with a solenoid drain, R407C, for 34 to 122°F rooms; HHPR-300 through -2400: 460 V three phase with a timed electric drain, R404A, for 36 to 115°F rooms; Male NPT through 600 SCFM, 3 in Class 300 raised-face flanges from 750 to 1,200 SCFM and 4 in from 1,600 up; Built to UL standards.
Sizing at high pressure. Rate the dryer on the free-air flow the high-pressure compressor delivers, since the tables are already at the dryer's working pressure; A blow-molding line that draws 1,100 SCFM at 580 psig lands on the HHPR-1200; two such lines on one header take the HHPR-2400; Check the inlet temperature at the dryer: a high-pressure compressor's final-stage aftercooler should bring the air under 120°F.
HHPR Series Part Numbers
| Part Number | SCFM | Connection | Voltage | Power | Dimensions (in) | Weight (lb) |
|---|---|---|---|---|---|---|
| HHPR-115 | 115 | — | 115/1/60 | — | — | — |
| HHPR-150 | 150 | — | 115/1/60 | — | — | — |
| HHPR-200 | 200 | — | 115/1/60 | — | — | — |
| HHPR-300 | 371 | 1-1/2 in MNPT | 460/3/60 | 1 hp | — | 300 |
| HHPR-600 | 612 | 2 in MNPT | 460/3/60 | 2.5 hp | — | 390 |
| HHPR-750 | 768 | 3 in Class 300 RF flange | 460/3/60 | 2.5 hp | — | 730 |
| HHPR-1000 | 1,000 | 3 in Class 300 RF flange | 460/3/60 | 3 hp | — | 850 |
| HHPR-1200 | 1,237 | 3 in Class 300 RF flange | 460/3/60 | 4 hp | — | 870 |
| HHPR-1600 | 1,610 | 4 in Class 300 RF flange | 460/3/60 | 5 hp | — | 1,570 |
| HHPR-2000 | 2,000 | 4 in Class 300 RF flange | 460/3/60 | 7 hp | — | 1,590 |
| HHPR-2400 | 2,410 | 4 in Class 300 RF flange | 460/3/60 | 9 hp | — | 1,795 |
Flows are the ratings at 100°F inlet and 100°F ambient, and several sizes carry a little more than their nominal number; connection, power and weight for the three 115 V sizes are confirmed on the quote.
HHPR Series Applications
Connections, weights and installation
From a 300 lb unit on 1-1/2 in MNPT to a 1,795 lb dryer on 4 in Class 300 flanges.
The HHPR-300 weighs 300 lb and connects with 1-1/2 in MNPT; the HHPR-600 is 390 lb on 2 in MNPT. From 750 SCFM the connections are 3 in Class 300 raised-face flanges, with the HHPR-750, -1000 and -1200 at 730 to 870 lb, and from 1,600 SCFM they are 4 in Class 300 flanges, with the HHPR-1600, -2000 and -2400 at 1,570 to 1,795 lb. Refrigeration compressors run from 1 hp on the HHPR-300 to 9 hp on the HHPR-2400, and pressure drop at rated flow is 1.6 to 3.3 psid. Cabinet dimensions, and the connection and weight of the three 115 V sizes, are supplied on the quote drawing.
Because the piping is Class 300 at these pressures, plan the flanged spools, the bypass and the isolation valves as part of the dryer order rather than an afterthought. Fit a high-pressure-rated prefilter ahead of the dryer and an afterfilter behind it, pipe the drain to a condensate treatment unit through a line that can take the discharge pressure, and leave the condenser face and the electrical box accessible. Air-cooled units reject the condenser heat into the room, which is rarely a problem at these refrigeration sizes.
A dimensional drawing with flange ratings and pad loads is issued with every HHPR quote.
Common FAQs
115 to 2,400 SCFM
- Sizes: 115, 150, 200, 300, 600, 750, 1,000, 1,200, 1,600, 2,000, 2,400 SCFM
- Power: 115/1/60 to 200 SCFM, 460/3/60 from 300 SCFM; refrigeration compressors of 1 to 9 hp
- Connections: MNPT to 600 SCFM; 3 in and 4 in Class 300 RF flanges from 750 SCFM
- Replaces: HPET Series, size for size
- Max working pressure: 680 psig
- Rated conditions: 100°F inlet, 100°F ambient
- Max inlet temperature: 120°F
- Ambient range: 36 to 115°F three-phase, 34 to 122°F single-phase
- Pressure dew point: 40 to 41°F
