Safety valve 1915 3.5 bar, 3/4 inch 1915.20.156

Safety valves of the 1915 series are devices designed to protect pressurized systems – filled with liquid or inert gas – against exceeding the permissible pressure. They are a reliable safety element for heating, water and other installations where pressure control is crucial. Available in a wide range of diameters, from DN15 to DN50, and pressure settings (from 1.5 to 6 bar), they allow for precise adaptation to specific needs.

This valve finds application in installations with media such as steam, gases and liquids, with a maximum operating temperature of up to 140°C. The valve design allows for the installation of up to three units on a single heat exchanger, which allows for the protection of installations with a higher thermal power than would result from standard calculations. Made of high-quality materials – brass/bronze (housing), Gd-Zn/brass/bronze (cover) and spring steel with an anti-corrosion coating – guarantees long-lasting and trouble-free operation. The diaphragm and seals are made of a material resistant to high temperature and aging, which further increases its reliability.

Key features and benefits:

• Wide range of applications: ideal for protecting heating, water, gas and other pressure systems.
• Precise adjustment: the ability to choose from many pressure settings (1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6 bar) ensures optimal adaptation to the specifics of the installation.
• High operating temperature: withstands temperatures up to 140°C, allowing it to be used in demanding conditions.
• Durable construction: made of high-quality materials resistant to corrosion and mechanical damage.
• Easy servicing: the possibility of replacing the valve head (1916) in models with a diameter of 1/2" and 3/4" simplifies repairs and maintenance.
• Compliance with standards: has a UDT 42-C-04/imp. type examination, mark 0085 confirming safety of use.

The 1915 safety valve is available in various thread sizes (G ½", G ¾", G 1", G 1 ¼", G 1 ½", G 2") and pressure settings. Model 1915.20.156, with a diameter of 3/4 inch and a setting of 3.5 bar, is particularly recommended for applications requiring reliable overpressure protection in installations with medium thermal power. Remember to mount the valve in a vertical position with the inlet from below to ensure proper operation. This valve is also compatible with installations containing glycol – however, the maximum glycol content should not exceed 50%.