Amazon.com: SNS Compressed Air Filter Regulator Lubricator FRL Three Unit Combo 1/4" NPT, Semi-Auto Drain, With Gauge and Bracket, Metal Bowl AC3000-N02 : Industrial & Scientific
Filter/Regulator/Lubricator (FRL) for Rotary 4-Post Lifts
Amazon.com: SNS Compressed Air Filter Regulator Lubricator FRL 1/4" NPT, Semi-auto Drain, With Gauge and Bracket, Metal Bowl Two Units Combo AC3010-N02A : Industrial & Scientific