These plastic water level valves use water pressure and a float mechanism to control tank filling. When the level drops, the valve opens to admit water. As the float rises to the set level, the inlet closes. The valve operates without electrical wiring, sensors or a separate controller.
Top inlet and side inlet arrangements accommodate different supply-pipe layouts. Internal versions fit inside the tank. External versions mount outside and use a connecting hose to follow the tank's water level. Applications include household and rooftop tanks, reservoirs, solar water-heater supply systems and industrial water storage.
| Configuration | Inlet arrangement | Installation | Operating temperature |
|---|---|---|---|
| Internal top inlet | Top | Inside the tank | 0–100°C |
| External top inlet | Outside the tank, with level connection | 0–120°C | |
| Internal side inlet | Side | Inside the tank | 0–100°C |
| External side inlet | Outside the tank, with level connection | 0–120°C |
Available constructions include enclosed, compact and elbow-body layouts, with white, green or blue housing components. Select the complete inlet, outlet and level-connection arrangement, including the required installation space.
| Parameter | Specification |
|---|---|
| Product type | Automatic float-operated water level control valve |
| Nominal connection options | 1/2in, 3/4in and 1in |
| Working pressure | 0.1–10bar |
| Medium | Water; clean, noncorrosive supply |
| Control principle | Mechanical float and water-pressure actuation |
| Electrical supply | Not required |
| Plastic material options | PP or PA66 nylon configuration |
| Filtration | Dual filtration structure with inlet filter |
| Fasteners where fitted | 304 stainless steel |
Choose the specified material and temperature configuration together. Pipe nominal size and measured interface diameter are different quantities; use the corresponding dimensional illustration when selecting the inlet, outlet and mounting details.
The inlet filter and internal filtration structure help keep debris away from the valve mechanism. Serviceable housing designs provide access for cleaning. Snap-fit housings allow the outer shell to be released, while other internal assemblies use stainless steel retaining screws.
Check inlet direction, connection size, mounting position, water quality and operating pressure before installation. Adequate water pressure is required for reliable closing and filling performance. Install an external model with its level connection arranged to track the tank level, and provide access for inspection and cleaning.
Keep the float free to move, flush the supply pipe before connection and test filling and shutoff after installation. These valves are intended for clean water; avoid steam, corrosive liquids, heavy sludge and large particulate contamination. Use the ordered temperature limit for hot-water service.
Connection dimensions, installation structure, material, inlet orientation and packaging can be customized. The attached dimensional guide shows the available plastic configurations and a separately identified stainless steel reference section.
