THB 1/2-inch Heavy Duty Particulate Filter Moisture Trap with Auto Drain – 175 PSI, 140 CFM

Overview

The THB 1/2-inch Heavy Duty Particulate Filter Moisture Trap with Auto Drain is designed to protect your air tools and compressor by removing moisture, dust, and debris from compressed air lines. Built around a rugged metal bowl with a clear sight glass, this unit lets you monitor moisture levels at a glance while its auto drain keeps maintenance hands-off.

Engineered for both low and high pressure systems, this filter supports up to 175 PSI in and out and delivers a steady 140 CFM flow rate. It includes a 1/8-inch auto drain connection, plus 1/2-inch NPT air inlet and outlet ports, making it compatible with a wide range of shop setups. A wall mounting bracket is included for easy, space-saving installation.

Real-world use and benefits

In busy workshops, clean, moisture-free air helps pneumatic tools operate more smoothly and reduces the risk of moisture-related wear. Operators often notice easier start-ups and less sticking in valves and actuators when air quality is maintained. The auto drain minimizes routine tasks, so technicians can focus on their work while the filter handles moisture removal automatically.

• Auto drain continuously clears moisture and debris from the metal bowl.
• 5 micron filter element traps fine particulates before air reaches tools.
• Sight glass offers quick visibility of moisture levels for timely maintenance.

Key specifications

• 175 PSI max input and 175 PSI max output pressure
• 1/2" female NPT air inlet and 1/2" female NPT air outlet
• 1/8" male NPT auto drain connection
• 5 micron filter element
• 7.9" height x 3.10" square metal bowl with sight glass
• Wall mounting bracket included
• Temperature rating: 41°F min to 140°F max
• Flow rate up to 140 CFM
• 2.7 oz metal bowl

Installation is straightforward with the included instructions, and this THB unit is built to withstand demanding shop environments. By filtering dust, dirt, oil, and water from compressed air, it helps protect tools like grinders and pneumatic actuators while keeping control valves moving freely. The compact design makes it suitable for garages and workshops where wall space matters, yet the unit remains robust enough for daily use.