... design 2.food grade PBT material 3.small, practical 4.can be arbitrary Angle adjustment INTRODUCTION Introduction1, environmental protection design, ... food grade material POM, small, practical, and can be arbitrary Angle regulation; 2,for the G1/4 the ... , mainly for the water heater, wall-hang boiler, water machine. NOTE: OKD-HZ41FB water immersion sensor ROHS POM