4-Pack Brass Air Compressor Drain Valve Screws – Tank Drain

Keep Your Air Compressor Tank Clean & Efficient

Moisture buildup inside your air compressor tank is one of the most common causes of reduced performance and premature wear. These LEENKEA Brass Drain Valve Screws make condensate removal fast, simple, and tool-free — helping you maintain optimal tank capacity and extend the life of your compressor. This pack includes 4 pieces, so you always have spares on hand. Made in Mainland China.

Why You Need These Drain Screws

During regular operation, moisture from compressed air naturally accumulates in the tank. If left unchecked, this water can corrode the tank walls and reduce storage capacity over time. Simply loosening these drain screws allows condensate to flow out naturally — quickly and cleanly — keeping your compressor running at its best.

Key Features

• Solid Brass Construction: Durable, corrosion-resistant material built to handle compressive stress and high-cycle use.
• Tool-Free Installation: Threaded connecting ends make fitting fast and straightforward — no special tools required.
• Silent Operation: Designed for quiet, controlled drainage without disruptive pressure blowouts.
• Universal Fit: Compatible with screw compressors and most standard small air pump tanks.
• High Reliability: Built for consistent performance and long-lasting sealing integrity.
• Value Pack: Comes with 4 drain screws — great for replacements, multiple units, or keeping spares on your workbench.

Specifications

• Material: Brass (Copper Alloy)
• Type: Compressor Drain Valve Screw
• Quantity: 4 Pieces
• High-Concern Chemicals: None
• Origin: Made in Mainland China

How to Use

1. Ensure tank pressure is reduced to below 1 kg (14.5 PSI) before draining.
2. Slowly twist the drain screw to open — water will discharge naturally and cleanly.
3. Once drained, retighten securely. Be careful not to overtighten, as this can damage the internal O-ring seal and cause air leakage.
4. When reinserting the inner hex screw, ensure it is clean and free of debris to maintain a proper seal.

Package Contents

• 4 × Brass Air Compressor Drain Screws

Important Notes

Actual product color may vary slightly from images due to monitor brightness and lighting conditions. Please allow minor measurement deviations. Always depressurize the tank before performing any maintenance.

For general workplace tool safety guidelines, visit OSHA – Compressed Air Safety.

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Frequently Asked Questions

Q: How often should I drain my air compressor tank using these drain screws?

A: It is recommended to drain condensate from your air compressor tank after every use, or at minimum once a day during heavy use. Regular draining with these brass drain screws prevents moisture buildup, protects the tank from internal corrosion, and ensures maximum storage capacity.

Q: Are these brass drain screws compatible with all air compressors?

A: These drain screws are designed to fit most standard screw compressors and small air pump tanks with threaded drain ports. Always verify your compressor's thread size and drain port dimensions against the product specifications before installation to ensure a proper fit.

Q: What happens if I overtighten the drain screw?

A: Overtightening can damage the internal O-ring seal, which may result in air leakage. Always tighten securely but gently, and ensure the hex screw interior is clean before reassembly for a reliable, leak-free seal.