Liquid Flow Switch Ambient Temperature - Maximum 300 Degrees F Ambient Temperature - Minimum -30 Degrees F Connection Size 1 in Connection Type NPT Contact Rating (DC) 20 V Flow Rate - Maximum 52 gpm Flow Rate - Minimum 15 gpm Flow Switch Type Paddle For Pipe Size 1 1/2 in Hazardous Location Specification Class I Div 2 Group A B C D Housing Material 316 Stainless Steel Media Temperature - Maximum 300 Degrees F Media Temperature - Minimum -30 Degrees F Overall Height 8.9 in