RTK MV 521x / PV 621x

Two-way actuated control valves for steam, liquids and gases
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Valve Operation Principle

Electric or pneumatic actuated globe type control or shut-off valve


DN 15-100 (1/2″ – 4″)


DIN PN 16-160 / ANSI 150-900


Cast Iron, Ductile Iron, Cast Steel, Stainless Steel, Creep Resistant Cast Steel


Media temperature: up to 530°C

Leakage Class

Depends on seat materials: Class III, IV, IV-S1, V, VI


Flange, Butt weld by request

Available by Request

Bellows, Perforated or stellited plug, Hardened perforated plug, Stellited seat, Ferro-titanium trim, Soft  seat, Flanges with groove, Gas packing acc. DVGW, Oxygen version, Stem heater versions, QCS (Quick Change Seat) versions

Actuator Options

Electric actuated MV serie
3 step control, I/O 0/4-20mA, 0/2-10V, Profibus DP, Profinet, Modbus, additional limit switches, hydraulic emergency closing unit, anti-condensation heater, integrated single loop PID controller | Supply voltage: 24 / 115 / 230 VAC, 24 VDC
Pneumatic actuated PV serie
electro-pneumatic positioner, I/O 4-20mA, Profibus DP, 3/2 solenoid valve, limit switches, alarm module, pressure gauges, air filter regulator



Country of Origin


Industry Sectors

Biotechnology, Chemical, Boiler and Power Plants, CHP, Breweries, Building materials, Dairies, Distilleries, Food and Beverage, Hospitals, Mining, Metallurgy, Oil&Gas, Refineries, Pharma and cosmetics, Pulp&Paper, Textile, Laundries, Timber, Pelletizing, Tire, rubber and plastic, Water and wastewater


Air, Gas, LPG, Vapours, Bitumen, Petroleum products, Condensate, Superheated water, Crystallizing Fluidums, Ethanol, Bioethanol, Neutral and Agressive Liquids, Steam, Superheated steam, Thermal Oil, Water and Wastewater