Industrial valves · Клапан регулирующий Forbes Marshall
Forbes Marshall Control Valves: Engineering Solutions for Process Control
Forbes Marshall control valves are precision control and shut-off valves designed for critically important process control loops. EV Group China supplies these solutions, ensuring stability and accuracy of parameters in the most critical nodes of pipeline systems. The valves are designed for reliable operation in the energy, oil and gas, and chemical industries, where precise control of flow, pressure, and temperature is required under variable load conditions.
Key Engineering Advantages of Forbes Marshall Valves
- Precision Control: Ensuring minimal deviation from the setpoint (desired value) due to high accuracy of stem positioning, which is critically important for the stability of production cycles.
- Durability in Aggressive Environments: The use of alloyed and stainless steels ensures resistance to corrosion, erosion, and high temperatures, extending the mean time between failures of the equipment.
- Integration into APCS: Full compatibility with modern automation systems (DCS, SCADA) and positioners allows for the implementation of complex control algorithms and reduction of operational costs.
- Configuration Flexibility: EV Group China offers a wide selection of models and options, allowing for the optimal solution to be chosen for a specific technological task, including customized designs.
Types of Forbes Marshall Control Valves
Ecotrol Series Control Valve
A single-seat valve designed for precise throttling of liquid and gas flows. Provides a high class of seat tightness (up to Class VI) and stable flow characteristics.
| Sizes | 1/2" – 16" |
|---|---|
| Materials | WCB, WC6, WC9, CF8M |
| Approximate Pressure | #150 – #2500 |
| Feature | High strength, corrosion resistance, durability, minimal leakage |
Three-Way Control Valve
Used for tasks involving mixing two flows into one or splitting one flow into two. Indispensable in heat carrier temperature control loops and bypass lines.
| Sizes | 1" – 10" |
|---|---|
| Materials | WCB, WC6, WC9, CF8M |
| Approximate Pressure | #300 |
| Feature | Effective control of large volumes, high load stability |
Self-Operated Pressure Regulator
A direct-acting self-operated pressure regulator. Maintains a set downstream (reducing) or upstream (back pressure) pressure without external power sources and control signals.
| Sizes | 1/2" – 16" |
|---|---|
| Materials | WCB, WC6, CF8M |
| Approximate Pressure | #150 – #2500 |
| Feature | High control accuracy, automatic pressure adjustment, reliability |
Anti-Surge Control Valve
A fast-acting valve that is a key element of the anti-surge protection system for centrifugal compressors. Prevents surging by relieving excess pressure at the suction.
| Sizes | 1/2" – 10" |
|---|---|
| Materials | WCB, WC6 |
| Approximate Pressure | #150 – #2500 |
| Feature | Protection against reverse flow, prevention of system damage |
Pressure Reducing and Desuperheating Valves
Combined devices (PRDS) for simultaneous reduction of pressure and temperature of superheated steam. Ensure steam preparation with specified parameters for technological consumers.
| Sizes | 1" – 12" |
|---|---|
| Materials | WCB, WC6, WC9, CF8M |
| Approximate Pressure | #300 – #1500 |
| Feature | Compact design, high efficiency under overloads |
PRDS and NRV Angle Type Valves
Valves with an angle body, designed for operation under high differential pressures. The design minimizes erosive wear and noise levels, optimal for throttling steam and gases.
| Sizes | 1" – 12" |
|---|---|
| Materials | WCB, WC6 |
| Approximate Pressure | #300 – #1500 |
| Feature | Compact, easy to maintain, high pressure control accuracy |
Series 811 U and 812 U
Valves for severe service conditions. The design with multi-stage throttling prevents cavitation and erosion when operating with high differential pressures.
| Sizes | 1" – 16" |
|---|---|
| Materials | WCB, WC6, CF8M |
| Approximate Pressure | #150 – #2500 |
| Feature | Resistance to high pressures, durability, easy installation |
Technical Specification and Material Execution
The material execution of Forbes Marshall valves includes carbon steel (WCB), chrome-molybdenum steels (WC6, WC9) for high temperatures, and stainless steel (CF8M) for corrosive media. This ensures their application in power generation, petrochemicals, and pharmaceutical industries. For selecting fittings for specific operating conditions, such as cryogenic temperatures, abrasive or particularly aggressive media, EV Group China engineers will provide technical consultation and offer special designs with the necessary seals and internal coatings.