The diaphragm-sealed disc design makes it less prone to malfunctions caused by disc (valve body) sticking.
The disc uses synthetic rubber, ensuring a good seal when the valve is closed.
The set pressure can be easily adjusted without removing the lever.
Structurally and materially, there is no risk of cracks due to low-temperature embrittlement.

Specifications and Materials

• The outlet-side pressure (back pressure) is atmospheric pressure. Avoid installing outlet-side pipes (drain pipes) that rise vertically or exceed 4.5 meters in length.
• The end of the drain pipe should be positioned at least 15 cm above the surface of the drainage channel. If it is necessary to discharge blow-off water or other liquids, install a separate discharge pipe and leave at least 15 cm of space at the drain pipe’s end.
• Occasionally (about once per day), move the lever to check if discharge occurs. If the outlet-side pipe is 15 cm or longer, slightly lift the lever handle at an angle to allow liquid to discharge. (If lifted straight up to 90°, the valve may not operate properly due to back pressure effects.) If this happens, fully close the valve once, then reset its operation.
• If there is a risk of freezing, take adequate insulation measures.

Dimensions and Mass