The ball valve is used as a shut-off valve in heat supply systems, water supply systems, in steam, fuel and pneumatic systems with compressed air and neutral gases. Installation of valves of this series is possible in systems transporting liquid and gaseous media (water, oil, oils, steam, air, alcohols, glycol, etc.), non-aggressive to the materials of the valve.

Pneumatic actuators DNOVA double-acting rotary PA-DA are designed to automate the process of controlling industrial valves with a maximum torque of up to 2128 Nm.

The limit switch unit is an electrical device designed to open and close the working circuit and to visualize the positions of the shut-off element of the pipeline valve. As a rule, a sealed box contains two mechanical switches rated for voltage up to 250 V, which monitor the position of the actuator rod and signal in extreme positions. They are mounted on top of the actuator surface. In the upper part of the limit switch unit there is a two-color hemisphere of the visual indicator. If the connected pipeline valve is closed, then only the red part of the hemisphere with the inscription CLOSED is visible; if open, only the yellow part with the inscription OPEN. This visual indicator is clearly visible from afar, which simplifies the inspection of the equipment, and the color difference between the open and closed positions reduces the likelihood of erroneous perception of information. Thanks to the use of the limit switch unit, it becomes possible to transmit information about the position of the pipeline valve (open / closed) to automated control systems, which increases the reliability of the system as a whole and simplifies diagnostics when faults are detected.

Technical parameters of ball valves DNOVA BV3131P(3pc)-FP-W-ISO-H LONG DN10-150 full bore, body - stainless steel 304, welded, with pneumatic actuator DNOVA PA-DA and limit switch block APL-410N EX

Sketch of the dimensions and sizes of ball valves DNOVA BV3131P(3pc)-FP-W-ISO-H LONG DN10-150 full bore, body - stainless steel 304, welded, with pneumatic actuator DNOVA PA-DA and limit switch block APL-410N EX

Dimensions and sizes of ball valves DNOVA BV3131P(3pc)-FP-W-ISO-H LONG DN10-150 full bore, body - stainless steel 304, welded, with pneumatic actuator DNOVA PA-DA and limit switch block APL-410N EX

Sketch of parts and materials of the limit switch block DNOVA APL-410N EX

Table of parts and materials of the limit switch block DNOVA APL-410N EX:

Passports and certificates

Data sheet for DNOVA DA/SA double-acting pneumatic actuator with return springs

Data sheet for limit switch unit DNOVA APL-410N EX

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