Pneumatic PA-68 Auto Drain Valve for Air Compressor Tank – 8mm Connector
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Description
Auto Drain Trap
What is an automatic drain?
Pneumatic drain can be used in compressed air equipment and pipelines, can always be internal condensate generated timely and automatically discharged out of the compression system, to keep the compressed air dry and clean.
Features：
- Extra large flow holes for easy discharge of oily sludge-like effluent.
- Heavy-duty valve plate steel, durable and superb.
- Self-cleaning function, the valve port is not easy to clog.
- All metal products, high pressure resistance.
- High safety against organic solvents.
- Observation window to monitor the state of dirt accumulation at any time.
DRAIN YOUR GOOD HELPER WE SOLVE YOUR TROUBLES
Reason 1
- The large diameter valve nozzle facilitates the discharge of oil mist, rust, and pipe scale.
- Long life all stainless steel valve nozzle design, pressure resistant design.
- Automatic cleaning function ensures that the valve seat is not blocked during operation.
- Discharge condensate from the air pipeline of the air compressor.
- For example：air storage tank, dryer, filter, cyclone separator, rear condenser, rear pipeline.
Reason 2
Compressed air has been widely used in a variety of automation industries around the world, including high-precision machining industries, instrumentation industries, and more. Water droplets from the cooling of compressed air in coolers or storage tanks can condense into condensate, resulting in condensation in compressed air piping.
These condensate components can lead to corrosion of piping, fluctuations in production quality of precision machining equipment, and degradation of product quality.
The PA-68 Drain can be used to quickly drain condensate from tanks, filters and dryers, minimizing the return of condensate to the compressed air lines.
Adjustable-Automatic Drain
Turn the knob to adjust the drain frequency of the auto drain trap
Adjust the drain frequency of the automatic drain through the all-brass knob, intermittent drainage is more convenient and reasonable control.
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- Counterclockwise: increase the draining speed +
- Clockwise: Drainage speed down -
Automatic drain hole
Turn the knob to adjust the drainage speed
The water in the automatic drain will pass through the drain hole
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- Can also be used with 8mm PU pipe
All-metal housing
Metal painting process, durable
The outer layer of the drain adopts advanced metal painting process to ensure the long service time of the product.
Double filtration, refusing to clog
Filter at the air inlet to prevent clogging
Upper and lower filtration to easily solve the clogging problem
Examples of Drainer Uses
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Air Compressors |
Dryers |
Storage Cylinders |
Precision Filters |
Comparison of Pneumatic Drainer with Float and Solenoid Drainer Types
Attention to daily use
- 1. Installation need to confirm the import and export direction, must keep the vertical direction of the installation, the height must be lower than the gas tank.
- 2. If the water volume is particularly large, loosen the adjustment valve counterclockwise to adjust the drainage volume, tighten the nut after adjustment.
- 3. If the water is not drained, loosen the adjustment counterclockwise, let the air pressure flush out the dirt and then tighten the adjustment valve.
- 4. Drainage port can be connected to Φ8 air pipe and lead to the sewage pipe, or can be configured with 1/2" pipeline sewage.
- 5. Please refer to the instruction manual for other installation problems.
Steps to clean the filter
- 1. Close the inlet valve first, make sure there is no pressure inside.
- 2. Unscrew the upper cover, take out the upper cover to clean the screen, and put back the upper cover must be tightened.
- 3. Unscrew the lower cover, take out the lower cover to clean the screen, and then put it back in order.
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FAQ
These are the most frequently asked questions from our customers regarding our sandblasting accessories. Have any other questions? Please contact our customer support.
Our customer support hours are Monday to Saturday.
Average response time: 24 hours.
Does this helmet provide comprehensive protection and maintain visibility under prolonged abrasive operations?
Yes. The helmet is engineered to shield the entire head, face, and eyes from abrasive rebound and dust. It includes a replaceable visor to ensure sustained clear visibility during extended blasting sessions.
How is nozzle wear assessed, and what materials ensure optimal durability?
Nozzle wear is indicated by decreased blasting efficiency or visible erosion. Our nozzles are manufactured from high-durability ceramic or tungsten carbide to maximize lifespan under continuous abrasive conditions.
Are these gloves engineered for abrasion resistance and long-term operational safety?
Yes. Constructed from heavy-duty rubber with extended cuffs, the gloves protect hands and forearms from mechanical wear, abrasive media, and dust ingress, ensuring safe and reliable operation.
What are the operational specifications for pressure and compatible abrasive media?
The pneumatic sandblasting gun is compatible with standard compressors (typically 60–120 PSI) and supports a wide range of abrasive media including aluminum oxide, glass beads, silicon carbide, and steel grit, suitable for professional surface preparation.