... arbitrary Angle adjustment INTRODUCTION Introduction1, environmental protection design, food grade material POM, small, practical, and can be arbitrary Angle regulation; 2 ... nut and pipe plug 3, hall element for Japan imports, sensitive and reliable; 4, flow range: 0.1 3 L/min ... the plastic shell and cast-bronze piece two kind of material, mainly for the water heater, wall-hang boiler, water machine ...