Market saturation foreign and domestic models, a wide variety of conditions in which the Taco mixing valves work, the specific requirements for it, questions of reliability and durability, the presence of a large number of construction types complicate the choice of PEX fittings for the concrete conditions of exploitation in modern systems.

The vast majority of mixing valves installed on the pipelines, and a much smaller portion is mounted directly on the boilers, machines, plants and aggregates.

The main parameters of valves are:

diameter nominal bore;
nominal pressure;
medium temperature;
working pressure
test pressure.

And the first three characteristics are common to valves and piping.

Nominal bore diameter (D y) – Nominal internal diameter of the pipeline, which is installed PEX fittings. Different types of reinforcement are the same diameter nominal bore have different flow areas.

Nominal pressure – the maximum operating pressure at 20 ° C, at which the long-term operation of valves and connecting parts of pipelines.

Operating temperature – the highest long-term temperature pumped through a pipeline environment (excluding short-term increases in temperature, acceptable technical conditions).

Operating pressure – the maximum overpressure at which the long-term operation of valves and connecting parts of pipelines at operating temperature ongoing protection.

Pressure test – too much pressure at which the valves and PEX fittings of the piping shall be hydraulically tested for strength and permeability of the material body parts of at or below 5 ° C and not above 70 ° C, if the normative and technical documentation is not specified the exact meaning of this temperature .

Boundary deviation values test pressure should not exceed 15%. Nominal pressure is the only parameter PEX fitting, which ensures its durability and accounted for as operating pressure and operating temperature. Nominal pressure corresponds to the allowable working pressure of the product at normal temperatures. With increasing temperature, the mechanical properties of structural materials deteriorate. Therefore, for valves with a high operating temperature allowable working pressure is lower than conventional. This reduction depends on the material details of fixtures and the temperature dependence of the strength properties of the material. The higher operating temperature, the lower the maximum operating pressure at the same relative pressure.

The flow through the valve should go in the direction of the arrow.
Static balancing Mixing Taco Valves S DN 10-50 Dynamic balancing Mixing Taco Valves M

Required straight section of the valve diameter is 5 “to” in the usual case, and 10 diameters “to”, if not installed immediately behind the pump.
A plastic tube (sleeve) at the inlet valve with the accession to the internal thread is used to protect the probe on the material sealing connection with the flow measurement.
Static balancing Mixing Taco Valves S. DN 65-300 Installation Mixing Taco Valves

To handle valve Taco when using open / closed sector requires a free rotation of 90 °

To install the probe requires free space min. 250 mm along the radial axis of the measuring input valve.

Labeling

The valve is marked name Taco, size DN, pressure class PN, max. temperature and date code. Execution of brass which is resistant to corrosion of zinc, marked “DZR”.

Operation in cooling systems

Balorex valve can be used in cooling systems with water-Glycol mixtures, if we take into account the viscosity of the liquid. If you have any questions please contact our engineers.