Control Valve

Control Valve Manufacturer in Germany

Control valves are designed for precise regulation of flow, pressure, temperature and liquid level in industrial process systems. By adjusting the flow passage in response to a control signal, these valves maintain stable process conditions across varying operating loads.

Our manufacturing range includes industrial control valves with pneumatic and electric actuation for applications in power generation, oil and gas, petrochemical processing, water treatment and industrial utility systems. Available configurations can be selected according to operating conditions, flow capacity, body material, trim design and control requirements.

Control valves can be manufactured in carbon steel, stainless steel, alloy steel, duplex and super duplex materials for liquids, gases, steam and demanding process media.

Control Valve Technical Specifications

Parameter	Typical Specification
Size Range	DN20–DN400
Pressure Rating	ASME Class 150–2500 / PN16–PN100, where applicable
Body Materials	ASTM A216 WCB/WCC, A217 WC6/WC9, A352 LCB/LCC, A351 CF8/CF8M/CF3/CF3M, duplex and super duplex stainless steel
Trim Materials	SS304, SS316, SS316L, hardened stainless steel and Stellite-faced options
End Connections	Flanged, butt weld, socket weld and threaded, depending on valve design
Actuation	Pneumatic or electric
Pneumatic Actuator	Spring-return diaphragm, single-acting or double-acting piston
Electric Actuator	Modulating or on/off
Control Signal	4–20 mA electrical; 0.2–1.0 bar (3–15 psi) pneumatic, where applicable
Pneumatic Supply	Typically 2–6 bar, depending on actuator requirements
Flow Characteristics	Linear, equal percentage and quick opening
Fail Action	Fail-open, fail-closed or fail-in-place, depending on actuator configuration
Stem Packing	PTFE or graphite
Accessories	Digital positioner, solenoid valve, limit switches, air filter regulator and position transmitter
Pressure Design	ASME B16.34 / EN 12516, as applicable
Flow Sizing	IEC 60534-2-1, where applicable
Inspection and Testing	IEC 60534-4 / EN 12266-1, as applicable

Specifications are indicative. The available combinations of size, materials, pressure rating and actuation depend on the selected valve design and project requirements.

Pneumatic and Electric Control Valve Configurations

Industrial control valves are available with pneumatic or electric actuators for integration into automated process control systems. Actuator selection depends on the maximum differential pressure, required valve travel, control response, available utilities and process safety requirements.

Pneumatic control valves can be equipped with diaphragm or piston actuators, including spring-return and double-acting arrangements. Electro-pneumatic or digital positioners provide accurate valve positioning in response to the control signal.

Electric control valves use motor-driven actuators for automated valve positioning. Modulating configurations allow continuous adjustment of the valve opening, while on/off arrangements are available for applications requiring automated opening and closing.

Optional accessories include digital positioners, solenoid valves, limit switches, air filter regulators and position transmitters.

Fail-open, fail-closed or fail-in-place configurations can be selected according to the actuator design and required process safety function.

Control Valve Flow Characteristics and Trim Design

Control valve performance depends on the relationship between valve travel, flow capacity and operating differential pressure. The required flow characteristic and trim arrangement are selected according to the process conditions and control objectives.

Available flow characteristics include linear, equal percentage and quick opening, depending on valve construction.

Trim configurations may include contoured plugs, guided stems, cages, balanced plugs and multi-stage pressure-reduction arrangements.

For applications involving high differential pressure, cavitation, flashing or excessive noise, specialised trim designs can be considered to manage fluid velocity, pressure reduction and potential trim damage.

Appropriate trim selection helps maintain control performance while reducing erosion, vibration and premature wear under demanding operating conditions.

High-Pressure Control Valves for Industrial Applications

High-pressure control valves are used in process systems requiring accurate regulation under elevated operating pressures and significant differential pressure conditions.

Depending on the service, valve configurations may incorporate alloy steel or stainless steel construction, hardened trim surfaces, pressure-balanced designs and multi-stage pressure-reduction arrangements.

For high-pressure steam, gas and liquid applications, the valve must be selected according to the specified operating temperature, maximum differential pressure, required shut-off capability and flow conditions.

Actuator sizing must also account for the forces required to operate the valve throughout its specified operating range.

Control Valve Sizing and Selection

Correct control valve sizing is essential for achieving stable process regulation and reliable operation throughout the required operating range.

The main selection parameters include:

Minimum, normal and maximum flow rates

Inlet and outlet operating pressures

Required differential pressure

Fluid density, viscosity and operating temperature

Vapour pressure and cavitation potential

Required flow coefficient (Kv/Cv)

Rangeability and flow characteristics

Shut-off leakage classification

Actuator thrust or torque requirements

Noise and velocity limitations

Sizing calculations can be performed in accordance with the applicable IEC 60534 requirements. The selected valve and actuator arrangement must accommodate the specified process conditions and required control performance.

Control Valve Industries and Applications

Our industrial control valve range is intended for flow, pressure and temperature regulation across various industrial sectors.

Industry	Applications
Oil and Gas	Gas pressure regulation, process flow control and pipeline pressure-reduction systems
Petrochemical	Reactor feed control, hydrocarbon processing and chemical circulation
Power Generation	Steam regulation, boiler feedwater control, condensate systems and cooling water
Chemical Processing	Chemical dosing, mixing, temperature regulation and process fluid control
Water and Wastewater Treatment	Pressure control, flow regulation and treatment process systems
Marine and Shipbuilding	Cooling circuits, utility systems and process fluid regulation
HVAC and District Energy	Chilled water regulation, heating water control and temperature management
General Manufacturing	Industrial utilities, automated production systems and process temperature control

Each application requires an appropriate combination of body material, trim design, actuator configuration and operating characteristics.

Control Valve Manufacturing and Project Requirements

Industrial control valves can be configured according to the operating conditions, applicable design standards and project specifications.

Material selection, end connections, flow characteristics, actuator sizing and accessories are established according to the intended service and control requirements.

For project enquiries, relevant operating data should include the process medium, minimum and maximum flow rates, inlet and outlet pressures, operating temperature, required leakage classification and available actuator power or air supply.

These parameters support the selection of a suitable control valve configuration for the specified industrial application