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Air Maintenance Devices Magnetic Line Starters Specially Formulated Compressor Oil Manual Desiccant Dryer Coalescing Filter Dry Air Test Kit
Vibration Pads Oil Less Riser Tank Kit Flex Hose Automatic Electronic Drain Valve Hydrostatic Test Pump
Pressure Switches
Check Valves Relief Valves Dry Air Pac Maintenance Kit Start Stop Control

Air Maintenance Devices back to top
Required by code for all Dry Pipe Installations, General Air Products UL/FM Approved Air Maintenance Devices control the amount of air available to be fed into the dry pipe system so that the volume of air available while maintaining the system pressure does not effect the ability of the water to move through the piping system. The Air Maintenance Devices are available in two standard styles, others are available - consult factory.
Model AMD-1 is used when compressed air is supplied through an existing factory air supply or when using tank mounted units.
Model AMD-2 is used for automatic operation in conjunction with a dedicated air compressor for the sprinkler system, such as base mounted units.

AMD-1 Dimensional Drawing

AMD IOM Manual & Specs 

AMD-2 Dimensional Drawing

Pressure Switch Adjustment Procedure


Magnetic Line Starters for Thermal Overload Protection  top
Recommended for Every Compressor

General Air Products' Magnetic Line Starter is a rugged, industrial designed, full voltage, non-reversing NEMA Rated overlaod protector.

These magnetic line starters provide protection to motor windings from harmful currents and resultand temperature rise that may be caused by either overlaoding the motor, sustained low line voltage, or locked rotor.

We strongly recommend that a magnetic line starter accompany every General Air Products' air compressor.


Specially Formulated Compressor Oil

Available as individual quarts and in case quantities of 12. (Model Number APC01Q).

MSDS Sheet for 30 wt ND Oil

Vibration Isolation Pads

General's neoprene and cork isolation pads reduce the noise and vibration of our compressors.

Vibration Isolation Pads Cut Sheet


Manual Desiccant Dryer
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General's manual desiccant dryers are used to remove water vapor from the compressed air system. Atmospheric dew points as low as -100F are achievable when operated within rated unit specifications.

Installation and Instructions for AD3400

Instructions for Replacement Desiccant (34006)

MSDS Sheet for Color Change Desiccant


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Coalescing Filter Riser Tank Kit
General Air Products' coalescing filter (Model F3500) is designed to protect manual desiccant air dryers from oil vapor and contaminants.

Designed for use with our OL Series Oil Less Riser mounted air compressors in systems where space is limited but air storage is required.

OLR-TK Design Drawing


Dry Air Pac Test Kit
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By using the Dry Air Test Kit you can always be sure that there are absolutely no ice plugs in your air stream.

The Dry Air PacTest Kit (Model DAP-TK) is a self contained device for visually monitoring moisture in air streams. The "Tester" consists of an adjustable needle valve. ASME safety relief valve and a sight glass gage housing containing moisture sensitive media. The media changes color in the presence of water vapor. When the media is blue, the air contains less than 20% moisture (relative humidity).

The media will change to pink when the moisture level in the air rises above 20% relative humidity. This means that ice plugs could be forming and you need to take action.

Typical installation is after an air dryer of any type, i.e. the Dry Air Pac.


Dry Air Pac Maintenance Kits
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Proper maintenance, such as regular oil changes, desiccant replacement, and multiple filter replacements are vital to the life and performance of the Dry Air Pac. If maintenance is neglected serious problems could occur in your freezer room. If well maintained you can count on a long safe life for the Dry Air Pac and its surroundings.
Learn more about maintaining your Dry Air Pac... (Coming Soon)
Maintenance Kit 1 - Model KSMB01

Includes replacement filter elements (3) and two quarts of specially formulated compressor oil.

Maintenance Kit 2 - Model KAMA01

Includes replacement filter elements (3), two quarts of specially formulated compressor oil andone 50 lb. bag of replacement desiccant.


Hydrostatic Test Pump
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Portable Test Pump for use by Contractors in leak testing piping systems such as fire sprinkler systems and or plumbing installations.

  • 3 GPM Twin Piston Pump
  • Adjustable Relief Valve
  • Heavy Duty Steel Base
  • Thermal Overload Protection
  • 1/2"x10' High Pressure Hose