There are the devices for changing the flow rate of medium, while maintaining the required characteristics. Blok sets to change the resistance to the flow factor, and drives (actuators) used to provide mechanical energy needed to switch of valve positioners constitute the essentials parts of these devices.

Valves produced by the company "POLNA" S.A. are used, among others in the following industries: the energy industry, petrochemical, refining and natural gas industries.

This group includes:

• control valves (globe valves),
• non-standard control valves (globe valves),
• pneumatic, membrane, multispring  actuators,
• control chock valves,
• steam coolers (desuperheaters),
• valves controlling minimal flows.

The group of heat engineering products includes: self-actuated controllers, intended to regulate the set pressure in technological installations. Those controllers are used in district heating systems, industrial process water to control flow of cold and hot water, steam, air and non-combustible gases.

There are also in that group: Needles valves and block valves designed for assembly, start-up and maintenance of transducers, pressure gauges and other fixtures in measuring and automation regulatory installations.

Throttle valves allowing throttling of pressure, regulation of flow rate and the total cut-off of the factor, filters installed before the regulatory fittings for purification of factors flowing through them constitute ten next elements of the group.

The products of this group are used in heat engineering, in thermal-electric power stations, in heat-generating plants and in the heat center.

Detailed description of the group’s contents:

• self-actuated controllers,
• needles valves,
• block valves,
• throttle valves,
• cut off, hut –off valves,
• mesh filters.

Products in this group allow you to build a large number of varieties of central lubrication systems.  These are the two-hoses or multi-hoses systems, progressive, to lubricate chains of the horizontal transport conveyors. These are devices that constitute a part of lubricating posts in service stations for vehicles and machinery and other devices of individual design.

Central lubrication systems are recommended mainly for lubrication of highly loaded machinery and equipment, operating in difficult conditions, with a large number of cutting centers, placed at the considerable distances between each other and requiring intensive lubrication.

These systems are applicable in:

• steel plants and non-ferrous metals plants,
• equipment used in strip mines,
• underground headings,
• cement mills,
• sugar factories,
• forming shops and in other shops with similar working conditions.

Multi-hoses systems are often used on the same premises as the two-hose systems-. They are a complement, but with respect to the two-hose systems, they have less coverage in terms of the number of lubricating points and covered areas. They are recommended there, where the continuous lubrication is needed with small quantities of grease.

The Company offers the following equipment for central lubrication:

• lubricating pumps
• manual grease pumps
• lubricating gun
• lubrication posts
• grease dispensers

Distillation apparatus is used for the purification of water with dissolved mineral salts and gases by distillation. These facilities devices are used in laboratories, pharmacies, medical establishments, research and development institutes etc.

The group includes the following products:

• distillers,
• redistillers.

Products of this group are used in the heavy machinery.

Our foundry makes casts of grey cast iron, ductile cast iron and carbon steel, also pressure casts (bodies), for internal needs of our  company and for external customers.