Control

Control valves are used for continuous or on/off modulation of flow, pressure, differential pressure, and temperature in steam, water, condensate, thermal oil, air, and industrial fluid systems. Selection should not be based on DN alone, but on Kvs/Cv, available pressure drop, valve authority, inherent flow characteristic, noise, cavitation/flashing risk, seat leakage class, and material compatibility with the process medium.

The category includes 2-way and 3-way modulating valves in globe, cage-guided, single-seated, segmental V-notch, angle-pattern, cryogenic, and bellows-sealed designs. STEVI Pro valves are referenced with DIN flanged ends, body materials such as EN-JL1040, EN-JS1049, and 1.0619+N, nominal pressure ratings PN16, PN25, and PN40, and temperature capability up to 400°C depending on material selection. Stem sealing options include PTFE, EPDM, graphite, or stainless steel bellows. Seat leakage is specified in classes IV–VI according to DIN EN 60534-4.

For automated control, the valve must be matched with a suitable pneumatic or electric actuator, positioner, control signal, and fail-safe position. In pneumatic arrangements, the evaluation includes instrument air pressure, spring-to-open or spring-to-close action, response time, and provision for manual override. In hazardous areas, ATEX compatibility must be verified.

Differential pressure control and balancing valves are used in pump bypass lines, heat exchangers, thermal oil circuits, and condensate networks. As an example, the PRESO type covers PN16, DN15–DN100, adjustment ranges from 0.5 to 10 bar, and Kvs values from 2 to 45 m³/h, with seat leakage class IV according to DIN EN 1349.

Thermostatic valves are applied where self-acting temperature control is required without external power, using a sensor, capillary, or thermal actuator. Correct operation depends on sensor location, response time, maximum differential pressure, Kvs sizing, flow direction, and installation conditions.

Control Valves
Control Valves
Actuated On-Off Valves
Actuated On-Off Valves
Flow Regulating Manual Valves
Flow Regulating Manual Valves
Temperature Control
Temperature Control
Solenoid Valves
Solenoid Valves
Actuated on/off valve - 405/460 | ARI | Philippopoulos s.a.

Actuated on/off valve - 405/460 | ARI

Actuated on/off valve - 405/460 | ARI
Ari-Armaturen
Automatic On/Off Valve ARI STEVI 405/460 Two-way flanged isolation valve for industrial steam, condensate, water, thermal oil, and compatible industrial fluids. Selection is based on DN, PN, body material, temperature, differential shut-off pressure, and shaft sealing type. Technical Selection Limits DN15–DN500, depending on material and PN. PN16, PN25,...
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Control valve STEVI Pro - 422/462 | ARI | Philippopoulos s.a.

Control valve STEVI Pro - 422/462 | ARI

Control valve STEVI Pro - 422/462 | ARI
Ari-Armaturen
ARI STEVI Pro 422/462 – Control Valve for Large DN The ARI STEVI Pro 422/462 is a straight-through control valve designed for analog regulation of flow, pressure, or temperature in DN200–DN250 lines. It features a threaded seat ring and a double-guided plug. Available in PN16 with EN-JL1040 or EN-JS1049 and in PN25/PN40 with 1.0619+N. Versions 422 and 462...
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Control 3-way valve STEVI Smart - 423/463 | ARI | Philippopoulos s.a.

Control 3-way valve STEVI Smart - 423/463 | ARI

Control 3-way valve STEVI Smart - 423/463 | ARI
Ari-Armaturen
ARI STEVI Smart 423/463 – Three-Way Control Valve for Large DN The ARI STEVI Smart 423/463 is a flanged three-way control valve designed for mixing or flow diverting in large diameter networks. The series covers DN200–DN300, with the 463 available in DN200–DN250, and versions PN16, PN25, and PN40 in EN-JL1040, EN-JS1049, or 1.0619+N, depending on diameter...
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Control valve STEVI Smart - 425/426 | ARI | Philippopoulos s.a.

Control valve STEVI Smart - 425/426 | ARI

Control valve STEVI Smart - 425/426 | ARI
Ari-Armaturen
ARI STEVI Smart 425/426 – Control Valve DN300–DN500 The ARI STEVI Smart 425/426 is a linear control valve designed for high flow rates in water, steam, gas, and thermal fluid networks. The series covers DN300–DN500, with PN16 in EN-JS1049 for DN300 and PN25/PN40 in 1.0619+N for DN300–DN500. Final selection should consider medium, temperature, pressure,...
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Control valve STEVI Smart - 440/441 | ARI | Philippopoulos s.a.

Control valve STEVI Smart - 440/441 | ARI

Control valve STEVI Smart - 440/441 | ARI
Ari-Armaturen
ARI STEVI Smart 440/441 – Analog Control Valve The ARI STEVI 440/441 is a straight-through control valve designed for continuous regulation of flow, pressure, or temperature in industrial circuits. Available in DN15–DN250, with flanged DIN connections and bodies made from EN-JL1040, EN-JS1049, 1.0619+N, or stainless steel 1.4408, with pressure classes...
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Control valve STEVI Vario - 448/449 | ARI | Philippopoulos s.a.

Control valve STEVI Vario - 448/449 | ARI

Control valve STEVI Vario - 448/449 | ARI
Ari-Armaturen
ARI STEVI Vario 448/449 – Process Control Valve The ARI STEVI Vario 448/449 is a linear flow control valve with flanged connections and a threaded seat ring. It covers DN15–DN100 and is available in PN16, PN25, and PN40 versions, with bodies made from EN-JL1040, EN-JS1049, 1.0619+N, or stainless steel 1.4408. Variants 448 and 449 STEVI 448: Standard...
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Control 3-way valve STEVI Smart - 450/451 | ARI | Philippopoulos s.a.

Control 3-way valve STEVI Smart - 450/451 | ARI

Control 3-way valve STEVI Smart - 450/451 | ARI
Ari-Armaturen
ARI STEVI Smart 450/451 – Three-Way Control Valve The ARI STEVI Smart 450/451 is a three-way control valve designed for analog regulation in mixing or flow diverting operations. It covers DN15–DN150, PN16/PN25/PN40, with bodies made of EN-JL1040, EN-JS1049, 1.0619+N, or 1.4408. The connection is flanged, with face-to-face dimensions according to DIN EN...
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Control valve STEVI Pro - 470/471 | ARI | Philippopoulos s.a.

Control valve STEVI Pro - 470/471 | ARI

Control valve STEVI Pro - 470/471 | ARI
Ari-Armaturen
ARI STEVI Pro 470/471 – Control Valve The ARI STEVI Pro 470/471 is a linear control valve designed for industrial supply circuits, pressure, or temperature control. It features a threaded seat ring, guided plug, and blowout-proof stem. Available in sizes DN15–DN150, pressure classes PN16–PN40, with bodies made from EN-JS1049, 1.0619+N, or 1.4581, and...
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Control valve STEVI Pro - 470/471 ANSI | ARI | Philippopoulos s.a.

Control valve STEVI Pro - 470/471 ANSI | ARI

Control valve STEVI Pro - 470/471 ANSI | ARI
Ari-Armaturen
ARI STEVI Pro 470/471 ANSI – Control Valve for Industrial Processes The ARI STEVI Pro 470/471 ANSI is a linear flow control valve designed for industrial regulation of flow, pressure, or temperature. The series covers DN25–DN200 / NPS 1"–8" with ANSI 150 or ANSI 300 flanges, while butt weld versions are available in DN25–DN150 / NPS 1"–6". Standard bodies...
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Control valve STEVI H - 485/488 | ARI | Philippopoulos s.a.

Control valve STEVI H - 485/488 | ARI

Control valve STEVI H - 485/488 | ARI
Ari-Armaturen
ARI STEVI H 485/488 – HVAC Control Valve The ARI STEVI H 485/488 is a control valve designed for heating, ventilation, and air conditioning circuits, applicable in regulating heating or cooling water flow. The H series includes three-way and two-way configurations, equipped with electric actuators for analog or three-point control. Type Differences Fig....
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Flow regulating manual valve - ASTRA PLUS | ARI | Philippopoulos s.a.

Flow regulating manual valve - ASTRA PLUS | ARI

Flow regulating manual valve - ASTRA PLUS | ARI
Ari-Armaturen
ARI-ASTRA®Plus 042 Flow Control Valve Manual straight-through valve, flanged, designed for flow regulation and presetting in industrial water, steam, condensate, thermal circuits, and HVAC networks. The body is made of ductile iron EN-JS1049 / EN-GJS-400-18U-LT, rated at PN16, with length according to DIN EN 558 series 1 and flanges according to DIN EN...
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Gate valve soft seal - EURO WEDI | ARI | Philippopoulos s.a.

Gate valve soft seal - EURO WEDI | ARI

Gate valve soft seal - EURO WEDI | ARI
Ari-Armaturen
ARI EURO-WEDI – Soft-Sealing Shut-Off Valve The ARI EURO-WEDI is a manually operated shut-off/throttling valve with an EPDM soft seal, designed for heating and cooling water networks, as well as neutral industrial fluids compatible with EPDM. It is not intended for steam or media containing mineral oils. Technical Specifications Nominal Pressure: PN6 or...
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Flow regulating manual valve - ASTRA | ARI | Philippopoulos s.a.

Flow regulating manual valve - ASTRA | ARI

Flow regulating manual valve - ASTRA | ARI
Ari-Armaturen
ARI-ASTRA® Flow Control Valve The ARI-ASTRA® is a manually operated balancing/control valve for flow regulation, featuring a straight-through design with flanged connections PN16 according to DIN EN 1092-2. It is utilized in heating, cooling, and industrial water circuits where flow presetting, Δp measurement, and isolation capability are required....
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Temperature controller TEMPTROL - 771 LCG | ARI | Philippopoulos s.a.

Temperature controller TEMPTROL - 771 LCG | ARI

Temperature controller TEMPTROL - 771 LCG | ARI
Ari-Armaturen
ARI TEMPTROL 771 LCG – Thermostatic 2-Way Valve with Threaded Connection The ARI TEMPTROL 771 LCG is a self-acting thermostatic shut-off valve, designed for straight flow with BSP threaded connections. The LCG version lacks a pressure balancing bellows and is intended for applications where the available differential pressure remains within the selection...
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Temperature controller TEMPTROL - 771/772 | ARI | Philippopoulos s.a.

Temperature controller TEMPTROL - 771/772 | ARI

Temperature controller TEMPTROL - 771/772 | ARI
Ari-Armaturen
ARI TEMPTROL 771/772 – Thermostatic 2-Way Valve The ARI TEMPTROL 771/772 is a self-acting thermostatic valve with a flanged connection, designed for temperature regulation without auxiliary energy. Its operation relies on a thermal controller with a sensor and capillary tube; an increase in temperature at the sensor reduces flow through the shut-off...
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Temperature controller TEMPTROL - 775 | ARI | Philippopoulos s.a.

Temperature controller TEMPTROL - 775 | ARI

Temperature controller TEMPTROL - 775 | ARI
Ari-Armaturen
ARI TEMPTROL 775 – Thermostatic 2-Way Opening Valve The ARI TEMPTROL 775 is a self-acting proportional flow valve with flanges. It increases flow with rising temperature at the sensor, making it suitable for cooling applications or equipment overheating protection, without the need for electric or pneumatic actuators. Technical Data DN15–DN100,...
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Temperature controller TEMPTROL - 775 LCG | ARI | Philippopoulos s.a.

Temperature controller TEMPTROL - 775 LCG | ARI

Temperature controller TEMPTROL - 775 LCG | ARI
Ari-Armaturen
ARI TEMPTROL 775 LCG – Thermostatic Opening Valve with Threaded Connection The ARI TEMPTROL 775 LCG is a self-acting, two-way, straight-through flow valve with BSP threaded connections. It is a thermostatic opening valve: as the temperature at the sensor increases, the flow through the valve increases. Primarily used in cooling circuits or equipment...
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Temperature controller TEMPTROL - 773/774 | ARI | Philippopoulos s.a.

Temperature controller TEMPTROL - 773/774 | ARI

Temperature controller TEMPTROL - 773/774 | ARI
Ari-Armaturen
ARI TEMPTROL 773/774 – Thermostatic 3-Way Valve The ARI TEMPTROL 773/774 is a self-actuating thermostatic mixing or diverting valve with flanged connections. It operates without electrical signals, pneumatic air, or PLCs; the shaft movement is driven by a thermal controller with a sensor and capillary tube. Technical Specifications DN15–DN100. PN16,...
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Temperature controller TEMPTROL - 773 LCG | ARI | Philippopoulos s.a.

Temperature controller TEMPTROL - 773 LCG | ARI

Temperature controller TEMPTROL - 773 LCG | ARI
Ari-Armaturen
ARI TEMPTROL 773 LCG – Thermostatic 3-Way Valve with Threaded Connections The ARI TEMPTROL 773 LCG is a self-acting three-way mixing or diverting valve with BSP threaded connections and a CC499K body. It operates with a thermal controller, sensor, and capillary tube, requiring no electrical power or pneumatic air. The LCG version lacks a pressure...
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Control Valve - GVPC | Bellino | Philippopoulos s.a.

Control Valve - GVPC | Bellino

Control Valve - GVPC | Bellino
Bellino
Bellino GVPC – Analog Globe Control Valve The Bellino GVPC is a globe valve with contoured trim, designed for automatic control of liquid, gas, or steam flow in industrial installations. It functions as a final control element in pressure, level, temperature, or flow loops, where pressure drop is achieved through throttling at the trim. GVPC...
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Control Valve - GVCH | Bellino | Philippopoulos s.a.

Control Valve - GVCH | Bellino

Control Valve - GVCH | Bellino
Bellino
Bellino GVCH – Globe Control Valve with Cage Trim The Bellino GVCH is a globe-type control valve featuring a cage-guided trim, designed for flow, pressure, or level control in liquid and gas circuits. The cage trim philosophy is suitable when enhanced plug guidance and stable throttling service behavior are required compared to a simple contoured plug....
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Control Valve - GVLN | Bellino | Philippopoulos s.a.

Control Valve - GVLN | Bellino

Control Valve - GVLN | Bellino
Bellino
Bellino GVLN – Globe Control Valve Low-Noise Trim The Bellino GVLN is a globe-type control valve designed for applications where pressure drop results in increased noise, high velocity, or significant expansion in the trim. This model is part of the Globe Valve Low Noise series and serves as a final control element in flow, pressure, level, or...
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Control Valve bellow-seal | Bellino | Philippopoulos s.a.

Control Valve bellow-seal | Bellino

Control Valve bellow-seal | Bellino
Bellino
Bellino Bellow Seal – Analog Globe Valve The Bellino Bellow Seal is a globe-type control valve designed for applications where shaft sealing leakage must not rely solely on packing. The metallic bellows isolate the shaft from the medium, suitable for flow, pressure, level, or temperature control loops in liquids and gases. Trim and Materials The bellow...
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Control Valve angle type | Bellino | Philippopoulos s.a.

Control Valve angle type | Bellino

Control Valve angle type | Bellino
Bellino
Bellino Angle Type – Angular Control Valve The Bellino Angle Type is an angular control valve designed for automatic regulation of liquid or gas flow, particularly when a 90° directional change and throttling are required within the same valve body. It serves as the final control element in pressure, level, flow, or temperature loops. Construction and...
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Control