... Stabilized Instrument The Function of Non-Return Valve. Visual Adjustable Auto Filling Valve, Water Heating Systerm, Refrigeration, Air ... -return valve,hand stop valve, diaphragm is larger than the same kind products. Technical parameters: Max. pressure inlet :10barPressure ... reducing valve, stainless steel filter, shut-off valve and a check valve.With visual design, installed on the water inlet piping ...