Clack-valve with a ball - 25mm (1 inch)
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Description
Differential valve ZR is designed to be installed in a central heating system with forced water circulation - circulation pump. Its task is to protect the pump installation from damage due to overheating and pressure that may occur when the pump stops forcing circulation. During pump operation, the valve remains closed. When the pump stops working, for example due to power failure, the valve opens automatically, allowing gravitational water circulation.
Installation:
The valve fittings are equipped with pipe thread. The valve is installed in the main pipeline thread, between the pump mounting points. The valve can operate in vertical and horizontal position at the outlet, as well as vertically and horizontally at the inlet to the boiler. The arrows made on the valve body must correspond to the direction of water circulation in the installation. The differential valve ZR also performs the function of a union nut.
Technical parameters:
- operating temperature: 0- 90 C, temporary 110 C
- nominal pressure: 0.001 - 6.0 bar,
- permissible pressure up to 7.0 bar,
- valve opening pressure during gravitational circulation: 0.00-0.001 bar
- nominal flow cross-section through the valve 98-100% of the nominal cross-section of the installation
- noise level during work cycle up to 25 dB
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