Domain of usage:

Regulating, fixing the amount of water passing through the faucet despite changes in upstream pressure or changes and fluctuations in consumption (pressure changes in downstream)

Application temperature range: up to 70 degrees Celsius

Production range: DN50…DN800, PN10…PN40

Reference standards in design and construction

Face to face dimensions of two valve flanges according to the standards: DIN-EN558-1 Series, DIN3202-1 SeriesF1

Dimensions and drilling of flanges according to standards: DIN-EN 1092/1-2, DIN2501, ISO7005/1-2

Hydrostatic tests (sealing, pressure resistance and functional): ISO 5208

Type of cast iron: gray cast iron: DIN-EN 1561 GJL 250 DIN1691 GG-25

Ductile iron: DIN-EN 1563 GJS400-15 DIN 1693 GGG-40

Inner and outer coating: epoxy electrostatic powder paint/epoxy liquid paint.

Important note: 1. The ratio of the adjusted output pressure of the valve to the input pressure should be such that the valve operates within the permissible range (outside the cavitation range). Milk will be less useful.

2. For installation and operation, please pay attention to the instructions for automatic mechanical pressure relief valve of Navid Kariz friends.

Mechanism and how it works:

The flow control valves of Navid Kariz Dostan company are designed in such a way that by means of an orifice suitable for the pipe size and the amount of flow range, which is installed at the end of an extension pipe at the valve outlet and connected to the control circuit of the valve pilot. It is a flow control, it works in such a way that the output flow rate of the valve remains constant even in the conditions of fluctuating inlet pressure or changes in consumption (variation of downstream pressure).