Super-Dry D-1 Desiccant Air Dryer | 70 SCFM, 1" NPT | 280-110

Protect moisture-sensitive tools and processes with the Super-Dry D-1 desiccant air dryer. Rated for 70 SCFM at 100 PSIG with 1" NPT connections, this compact dryer combines water separation, filtration and activated alumina drying for intermittent use near the equipment being supplied.

Key Features

• Three treatment stages in one housing: separation, filtration and desiccant drying.
• No external power required for the dryer and no continuous regeneration purge.
• Self-contained desiccant bag for cleaner cartridge changes.
• Powder-coated aluminum housing with wall-mounting brackets.
• Stainless steel V-band clamp provides access for maintenance.
• Pre-filled desiccant cartridge and standard accessory kit included.

Product Overview

Wet compressed air enters the offset inlet, where centrifugal action helps separate liquid water and particles. The air passes through inlet filtration and an activated alumina desiccant bag that adsorbs moisture vapor. Outlet filtration helps retain desiccant dust before the air reaches your equipment.

Application note: The D-1 is a non-regenerative, point-of-use dryer for intermittent operation or supplemental drying downstream of a central system. It does not provide a stable dew point during continuous use and is not a replacement for a regenerative twin-tower dryer. The catalog lists a pressure dew point down to -40°F, subject to operating conditions.

Technical Specifications

Applications and Installation

Suitable applications include paint spraying, plasma cutting, sandblasting, pneumatic tools and other intermittent processes within the dryer’s flow and temperature limits. Install close to the point of use with cooled inlet air. Do not connect hot compressor discharge directly if it exceeds the 100°F inlet limit. Upstream bulk-water separation can help protect the cartridge from excessive liquid loading. Contact Compressed Air Advisors for help matching the dryer to your airflow, pressure, duty cycle and air-quality requirements.

Lead Time

Generally ships in 1–3 business days, subject to availability. Contact us to confirm current stock and shipping timing before placing a time-sensitive order.

What’s Included

• Super-Dry D-1 dryer housing with pre-filled desiccant cartridge.
• Wall-mounting brackets and stainless steel cover clamp.
• Standard accessory kit: two pressure gauges, 1/4" safety valve, 1/4" manual ball valve and associated fittings.

Humidity/temperature indicator, electronic timer drain, upstream water separator and installation piping are sold separately.

Maintenance and Replacement Parts

Drain accumulated condensate at least every 4–8 operating hours, or more frequently as conditions require. Replace the cartridge when an installed moisture indicator exceeds 80% relative humidity or moisture condenses downstream. Cartridge life depends on inlet temperature, moisture loading, airflow and operating hours. Isolate and fully depressurize the dryer before removing the cover or performing maintenance.

• Shop ED-1 Replacement Kit — 280-210 — maintenance kit matched to the D-1.
• Add HGT-1/4 Humidity and Temperature Gauge — 320-100 — optional indicator to help identify cartridge saturation; not a precision dew point monitor.
• Add TD-1/4 Electronic Timer Drain — 320-210 — optional automatic condensate drainage; confirm electrical supply and installation fittings.

Warranty

Covered by Super-Dry’s 10-year prorated warranty on the dryer housing, brackets and cover, subject to manufacturer terms and proper installation, operation and maintenance. Consumables and normal wear items, including desiccant cartridges, filter elements, seals and gaskets, are excluded. Labor and freight are excluded unless authorized by Super-Dry.

Frequently Asked Questions

What applications is the Super-Dry D-1 designed for?
The D-1 is designed for intermittent, point-of-use compressed air applications such as paint spraying, plasma cutting, sandblasting and air tools, provided airflow and inlet conditions stay within its ratings.

Can the D-1 handle 70 SCFM continuously?
Its published flow capacity is 70 SCFM at 100 PSIG, but it is a non-regenerative dryer intended for intermittent use. It does not maintain a stable dew point during continuous operation and is not a substitute for a regenerative twin-tower dryer.

Does the D-1 require electricity?
The dryer itself requires no external power and has no continuous regeneration purge. An optional electronic timer drain requires a suitable electrical supply and releases air when draining.

Will it provide a constant -40°F dew point?
No. The catalog lists a pressure dew point down to -40°F with qualifications. Actual outlet dew point depends on inlet conditions, moisture loading, use pattern and desiccant condition; stable dew point during continuous operation is not guaranteed.

How hot can the inlet air be?
Do not exceed 100°F inlet air temperature. The installation manual recommends approximately 70°F for best results. An aftercooler or sufficient upstream cooling may be required.

How often should I drain the dryer?
The manual calls for draining accumulated condensate at least every 4 to 8 operating hours, and more often when moisture loading requires it. An optional automatic timer drain can automate this task.

Which replacement kit fits the D-1, and when should it be changed?
Use the Super-Dry ED-1 replacement kit, part 280-210. Replace the cartridge when an installed moisture indicator exceeds 80% relative humidity or moisture condenses downstream. Service life varies with operating conditions. Fully depressurize the dryer before servicing.

Are the humidity gauge and automatic drain included?
The HGT-1/4 humidity/temperature indicator and TD-1/4 electronic timer drain are optional accessories sold separately. Standard accessories include two pressure gauges, a safety valve, a manual ball valve and associated fittings.

Shipping and Returns

Free standard shipping on eligible orders of $199 or more. Destination restrictions and expedited charges may apply.

Eligible returns require an RMA and must be requested within the 14-day return window. Products must be new and unused. A 25% restocking fee applies, and the customer is responsible for return freight. Electrical items, piping, built-to-order products and opened fluids are non-returnable. Contact us before returning any item.

Product Video