Burkert proportional control valves 2702 and 2712 with positioners
LEHIY item code: LH-0215
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Burkert proportional control valves 2702 and 2712 with positioners are available in pneumatic and electric versions. Electric versions are generally suitable for smaller diameter industrial control applications. Burkert pneumatic proportional control valves can be used to regulate both gases and liquids.
They can be used for pressure stabilization, flow stabilization, and temperature control. Burkert control valves can be used for both liquid and gas flow regulation. Burkert flow control valves have two series: 2702 and. 2712.
The Burkert 2702 is an angle valve, and the Burkert 2712 is a straight-seat valve.
The 2702 series Burkert proportional control valves are relatively cheaper, offer better value, and are more commonly used. Valve diameter range: DN15-50. The Burkert 2712 series control valves can reach diameters up to 100mm, and this series offers flange connections.
Considering safety and service life, we recommend using flange connections for equipment and pipeline diameters larger than DN50 for a more secure connection.
Burkert proportional control valve 2702, 2712 parameters: Brand: Burkert/Burkert Origin: Germany Function: Flow regulation Material: 316L stainless steel Working pressure: Up to 16 bar Medium temperature: ≤180℃ Nominal diameter 2702: DN 15-50 2712: DN 15-100 Installation interface 2702: Welded, threaded, clamp 2712: Welded, threaded, flanged, clamp Medium:.
Gas or liquid (please consult for corrosive media) Note: For Burkert proportional control valves of the 2702 and 2712 series, special requirements for welding, flanges, and clamps must be communicated in advance.
The Burkert flow control valves 2702 and 2712 are valves only and cannot be used alone. They require a Burkert positioner to form a complete set. Burkert positioners include 8692, 8693, 8694, 8792, 8793, etc., selected based on whether the customer requires a display, feedback, or PID control.
Why use Burkert proportional control valves 2702 and 2712 with positioners?
In automated production process control systems, control valves are a crucial and essential component, often referred to as the "hands and feet" of automation, and are one of the terminal control elements of the automatic control system.
Control valves have simple flow paths and low resistance, generally suitable for forward use (installation).
However, in high-pressure drop applications, control valves can be used in reverse to improve unbalanced forces and reduce damage to the valve core, while also facilitate media flow and preventing coking and blocking.
When using control valves in reverse, prolonged periods of low opening should be avoided to prevent strong oscillations that could damage the valve core.
Especially during the trial production phase of chemical plants, where loads are low and design process conditions cannot be quickly met, control valves used in reverse should avoid prolonged periods of low opening to prevent damage.
It adjusts the flow rate by changing the stroke according to the input signal to change the resistance coefficient. The Burkert proportional control valve's structure and usage:.
- Burkert proportional control valve structure: Except for the angle-type valve body, the structure of the Burkert proportional control valve is similar to that of a single-seat valve. Additionally, a Burkert positioner is installed on the seat. Its characteristics result in a simple flow path and low resistance, making it particularly advantageous for regulating fluids with high pressure drops, high viscosity, and containing suspended solids and particulate matter. It can prevent coking, adhesion, and clogging, and is also easy to clean and self-clean.
- Comparison of forward and reverse use of Burkert proportional control valves: Generally, Burkert control valves are installed forward, ie, bottom inlet and side outlet. Reverse installation (material side inlet and bottom outlet) is only recommended in high pressure differential situations and for high-viscosity, easily coking, or media containing suspended particles. The purpose of reverse use is to improve unbalanced forces and reduce wear on the valve core, while also facilitating the flow of high-viscosity, easily coking, and media containing suspended particles, preventing coking and clogging. Analysis of reverse use of Burkert proportional control valves: Under high pressure drop process conditions, reverse use is recommended for Burkert control valves. During the test run, the control valve exhibited strong vibrations and emitted a piercing noise. After 4 hours of testing, the valve core broke. However, this was not a quality issue, but rather due to improper use. The cause of the breakage is analyzed below. Generally, Burkert control valves are not recommended for reverse operation. Reverse operation is only recommended for media with high pressure differentials, high viscosity, easy coking, or containing suspended particles. When using in reverse, prolonged operation at a small opening should be avoided, especially during test runs.
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| Brand Name: | Burkert | Certification: | ISO9001, CE |
|---|---|---|---|
| Place of Origin: | China | Condition: | New |
| Warranty: | 1 year | Customized sourcing: | available |
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Burkert proportional control valves 2702 and 2712 with positioners
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