References
Material Procurement Department of KWB Konin in Kleczew confirms that POLNA SA is a supplier of equipment for central lubrication used in our plant in KWB Konin.
Central lubrication equipment was carried out in accordance with the relevant standards and met our requirements. Supplies are timely and in accordance with concluded contracts. We have no reservations as to the quality of the supplied products.
mgr inż Urszula Mokrzecka
KWB "KONIN" w Kleczewie S.A.
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SINGLE-PORTED GLOBE CONTROL VALVES TYPE Z
Single-ported globe control valves type Z are used in automatic and remote control systems to control flow of gases and liquids. Wide range of material and design versions make the valves widely sought-after in chemical industry, heat and power generation industry, paper industry, food industry, metallurgy and coal mining (versions for Western Europe market is marked: BR11).
| Nominal sizes /diameter/ |
DN15; 20; 25; 32; 40; 50; 65; 80; 100; 125; 150; 200; 250 |
| Nominal pressure |
• PN10; 16; 25; 40 • CL150; CL300 |
| Flow ratio | 0,01 ... 800 m3/h |
| Control characteristics | linear, equal percentage, quick-opening, modified |
| Rangeability |
50:1, non-catalogue - 100:1 |
| Leakage class |
IV class acc PN-EN 60534-4 class from B to G acc PN-EN 12266-1 |
| Media temperature |
- 196 ... + 450°C |
| Body materials |
cast iron EN-GJL 250 Use of other materials is possible but must be agreed upon. |
| Non-catalogue products |
We can adjust these parameters to your individual needs. In such cases, please contact our technical support specialists. |
- range of nominal sizes from DN15 to DN250 for pressure values PN10 to CL300,
- various materials of valve body cast and internal parts, adapted tospecific working conditions,
- wide range of flow ratios and control characteristics,
- reduction in aggressive and toxic media emissions to environment through application of bellow seal bonnets or bonnet packings meeting requirements of TA - LUFT,
- easy assembly and dismantling of valve internal parts for maintenance and service,
- high durability and reliability due to application of top-class materials and surface improvement processes (burnishing, stelliting, heat treatment, CrN coatings),
- possibility of mating with reversible action P/R (column) multi-spring actuators and changing the spring range with no extra parts (keeping the number of springs),
- possibility of fitting actuators with top drive,
- possibility of performing diagnostics of “valve-actuator” system due to application of smart electro-pneumatic positioners,
-
high tightness of closure due to application of soft valve seats (with PTFE seals in the whole range of
flows and characteristics, for valve plugs, balanced and unbalanced, -
same flow ratios and control characteristics for “hard” valve seats (metal-to-metal) and “soft” valve seats
(metal-gasket), for valve plugs, balanced and unbalanced, - reliable actuator-stem and valve seat-body connections,
- small guiding sleeve control forces due to application of balanced valve plugs in valves DN40…250,
- top-class flat and bonnet packings,
- wide range of electric actuators,
- possibility of mating with NN type hand operated drives,
- possibility of special executions for oxygen, hydrogen, gas fuels, low temperature mediums (liquid oxygen, liquid nitrogen), acid gases containing H2S; explosive atmospheres as per 94/9/EC - ATEX,
- competitive prices – due to simple and functional design of valves and actuators and applied materials,
-
design and production process meets the requirements of Quality Management System ISO 9001 and
Directive 97/23/EC, and regulations of AD2000 Merkblatt, designated for installation on pipelines.
