Schulz SMH-075-UP-TD 81 CFM High-Temperature Air Dryer
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Description
Schulz SMH-075-UP-TD — 81 CFM High-Temperature Refrigerated Air Dryer
The Schulz SMH-075-UP-TD is a strong-value choice for shops that need refrigerated air drying with hot compressor discharge air. Its built-in aftercooler and separate automatic drain bring cooling and moisture management together in one package, reducing the separate equipment needed around the compressor. This model is listed at 81 CFM at a 45°F pressure dew point; final sizing depends on your operating conditions.
Features and Benefits
- Built-in aftercooler circuit: Reduces the need for a separate aftercooler and moisture separator.
- Separate automatic drain: Removes condensate from the aftercooler circuit.
- Hot-inlet capability: Designed for inlet air temperatures up to 194°F, subject to correct sizing.
- Warm-environment capability: Published maximum ambient temperature of 113°F.
- Less separate equipment: Helps conserve floor space and simplify installation and maintenance.
- Electronic controller: Provides dryer control in an integrated package.
- Published sound level below 70 dB(A): Suitable for consideration where equipment noise matters.
SMH vs. ADS: Which Dryer Fits Your System?
Choose by the air temperature entering the dryer—not just compressor horsepower or the type of business. Both series provide refrigerated air drying. The key difference is how they handle heat before the drying stage.
| Your requirement | SMH high-temperature dryer | ADS standard-temperature dryer |
|---|---|---|
| Main reason to choose it | Handles hotter incoming air with a built-in aftercooler circuit and separate automatic drain. | Provides refrigerated drying when incoming air has already been cooled within the ADS inlet limit. |
| Compressor setup | Especially useful with piston compressors whose discharge air reaches the dryer too hot for an ADS. | A practical fit for aftercooled rotary screw systems or piston systems with adequate separate aftercooling. |
| Published inlet-air limit | Up to 194°F, with capacity checked for actual conditions. | Up to 131°F, with capacity checked for actual conditions. |
| Shop examples | Auto repair, tire shops, fabrication, and woodworking shops with hot piston-compressor discharge and limited space for separate cooling equipment. | General shop air, CNC and production air systems, or an existing compressor installation with effective aftercooling. |
| Equipment and installation | Combines aftercooling and drying, reducing the separate equipment required. | Uses the cooling already provided by the compressor or an existing aftercooler. |
| When to choose the other series | If your air is already adequately cooled, compare ADS sizing and total installed cost before paying for additional hot-inlet capability. | If inlet air can exceed 131°F, provide additional cooling or consider an SMH sized for the hot-air load. |
Typical Buying Decisions
Choose SMH: Your piston compressor sends hot air toward the dryer, and you want aftercooling and drying in one package. For example, if measured dryer-inlet air is 160°F, it exceeds the ADS published inlet limit; an SMH is a candidate once airflow, pressure, ambient temperature, and required dew point are checked.
Choose ADS: Your compressor or separate aftercooler already delivers suitably cooled air. For example, an aftercooled rotary screw system supplying air near 100°F may be well suited to an ADS sized for its actual flow and pressure. An SMH's hot-inlet capability may offer little benefit in that installation.
For painting, CNC, or moisture-sensitive work: Select the dryer and filtration together around the process requirements. Neither series alone guarantees oil-free air or a specified ISO air-quality class. A process needing a subfreezing dew point requires a different drying solution.
Compare capacity on the same basis: SMH and ADS nameplate CFM ratings use different published conditions. Do not choose solely by matching model numbers or advertised CFM. We can compare actual operating conditions and total installed cost. Explore air dryers or call 877.247.2381 for help selecting the right system.
Airflow and Dew Point Ratings
| 50°F pressure dew point | 88 CFM |
|---|---|
| 45°F pressure dew point | 81 CFM |
| 41°F pressure dew point | 66 CFM |
Sizing matters: The supplied sheet states nominal conditions of 176°F inlet air, 100 PSIG, and 90°F ambient, with a 50°F pressure-dew-point reference. The table provides additional dew-point capacities. Do not assume the same capacity at maximum inlet or ambient temperatures. Contact us to confirm selection for your actual conditions.
Technical Specifications
| Model / part number | SMH-075-UP-TD |
|---|---|
| Dryer type | High-temperature refrigerated |
| Built-in equipment | Aftercooler circuit with separate automatic drain |
| Air connections | 1-1/4" NPT female |
| Maximum inlet temperature | 194°F |
| Maximum ambient temperature | 113°F |
| Sound level | Below 70 dB(A), per supplied sheet |
| Refrigerant | R134a |
| Dimensions (L × W × H) | 17.5 × 17.3 × 35.4 inches |
| Net weight | 62 lb |
Complete Your Air System
Pair this dryer with properly selected compressed-air filters for your application. Need help comparing sizes? Browse our air dryers or contact our team for a matched compressor and air-treatment recommendation.
Frequently Asked Questions
Why choose an SMH high-temperature dryer?
Its built-in aftercooler circuit and separate automatic drain combine cooling and refrigerated drying in one package. This can reduce the need for a separate aftercooler and moisture separator, saving installation space and simplifying the system.
How much airflow can this model handle?
The supplied performance table lists 88 CFM at a 50°F pressure dew point, 81 CFM at 45°F, and 66 CFM at 41°F. Actual selection depends on inlet temperature, ambient temperature, operating pressure, and the required dew point.
Can it accept hot air from a piston compressor?
The SMH series is designed to accept inlet air up to 194°F. Confirm the actual temperature at the dryer inlet, system pressure, and airflow before selecting a model.
Will it deliver full rated airflow at 194°F inlet and 113°F ambient?
Those are published temperature limits, not a guarantee of full rated airflow at both limits. The sheet's nominal rating conditions are 176°F inlet air, 100 PSIG, and 90°F ambient. Contact us to confirm sizing for your operating conditions.
Does it replace compressed-air filters?
No. A dryer removes moisture but does not replace filtration selected for particles, oil aerosols, or other contaminants. Match filters to your air-quality requirements.
Does it provide a subfreezing dew point?
The sheet lists refrigerated-dryer pressure dew points of 41°F, 45°F, and 50°F. If your application needs a subfreezing dew point, ask us about a suitable desiccant dryer.
Does it qualify for free shipping?
Yes. This dryer qualifies for our free-shipping offer. Confirm any special delivery requirements before ordering.
How do I confirm the correct size and availability?
Call Compressed Air Advisors at 877.247.2381 with compressor airflow, system pressure, inlet temperature, ambient temperature, and required air quality. We can help confirm the dryer selection, availability, and ship date.
Electrical Requirements and Ordering
115V / Single Phase / 60 Hz. Published full-load current: 7.5 A. Confirm the available electrical supply, installation requirements, and current ship date before ordering.
