McMaster 8798N11 Modular Compressed Air Filter/Regulator, for Oil and Particles, Parker Series P31C, 1/4 NPT Female

Add these all-in-one units to your air supply to deliver clean, compressed air at the pressure you need. They work in two stages: the stacked filter/regulator removes large particles and sets the pressure, then the coalescing filter captures fine oil aerosols. You can connect them to Parker units of the same series with joiner clamps (sold separately)—even if the pipe sizes are slightly different—to customize your air preparation system. The regulator is relieving, so it will exhaust when the downstream pressure exceeds the set pressure.

These filter/regulators come with end blocks, so you can swap out components without unthreading your air line connections. The blocks remain connected to your pipe while you replace components between them. Add a safety lockout valve to prevent accidental start-ups during maintenance and comply with OSHA lockout/tagout regulations.

Tamper-Resistant Padlockable Covers—Padlockable covers (sold separately) clamp over the regulator knob to prevent unauthorized pressure changes.