RTK MV 5291 V-D / PV 6291 V-D

Electric or pneumatic actuated continuous blowdown control valve for steam boilers

Continual evaporation during steam generation increases the dissolved solids content in the boiler water. To keep this content within the limits and in accordance with regulations is important to blow out the boiler water continuosly or with intervals.

RTK MV (electric) 5291 V-D, PV (pneumatic) 6291 V-D are actuated control valves created for steam boiler continuous blow down for excact dosing of blow down flow rate. The dimension of the continious blow down valve is on normal operation 5% of the boiler steam rating. The maximum blow rate (full valve opening) is sized for 10% steam flow.

Meanings V or D are accordingly with or without sampling valve.

For more precise sizing contact our support.

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Valve Operation Principle

Electric or pneumatic actuated continuous blowdown control valve for steam boilers | Two-way design with or without sampling valve


DN 15, 20, 25, 40


PN 40


Carbon Steel


Media temperature: up to 530°C

Leakage Class

Class IV


Flange, Butt weld by request

Available by Request

Parabolic cone with linear characteristic, Hardened cone, Stellited seat

Actuator Options

Electric actuated MV serie
3 step control, I/O 0/4-20mA, 0/2-10V, Profibus DP, additional limit switches

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


Condensate, Superheated water, Steam, Superheated steam, Water and Wastewater