| Valves of the power supply system for power boilers type Z1B-M |
| Die-cast | housing, pass-through |
| housing, pass-through | DN50; 65; 80; 100 / 2”; 2,5”; 3”; 4” |
| Nominal pressure | PN250; 320 / CL1500; 2500
|
| Flow rate | according to Table 1 |
| Characteristics | linear or modified |
| Direction of flow | under the plug (FTO) |
| Flow path in cages: | according to Fig. 5 |
| Pressure recovery rate: | FL=0,975
|
| Leakage class: | min. V class acc. to PN-EN 60534-4 |
| Permissible operating pressure: | 250 bar
|
| Permissible operating temperature: | +250°C |
| Valves with multi-track flow path type Z1B-M |
| Flow coefficients Kvs: | according to Table 1. Non-compressible media |
| Flow coefficients Kvs: | according to Table 2. Compressible media |
| Characteristics: | linear |
| Direction of flow: | under the plug (FTO) or over the plug (FTC) – non-compressible media
|
| under the plug (FTO) – | compressible media |
| Construction of throttling elements: | according to Fig. 1 |
| Flow path in cages: | according to Fig. 2 |
- various materials of valve body cast and internal parts, adapted to specific working conditions
- constructional designs limiting the level of generated noise, increasing resistance to cavitation and flashing, enabling elimination of throttled flow
- wide range of nominal pressures from PN10 to CL2500, as well as flow ratios and control characteristics
- reduction in aggressive and toxic media emissions to the environment through application of bellow seal bonnets or bonnet packings meeting the 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 matching with reversible action P1/R1 (with cast yoke) and P/R (column) multi-spring actuators and changing the spring range with no extra parts (keeping the number of springs)
- possibility of equipping the actuators with a side (up to P1/R1) or top (up to P/R) manual drive
- possibility of performing diagnostics of “valve-actuator” system, due to application of smart electro-pneumatic positioners
- wide range of electric drives
- - possibility of special executions: for oxygen, hydrogen, low temperature mediums (liquid oxygen, liquid nitrogen), acid gases containing H2S; with heating jacket; for explosive atmospheres as per 94/9/EC – ATEX
- the design and production process meet the requirements of Quality Management System ISO 9001 and Directive 97/23/EC, and regulations of AD2000 Merkblatt, designated for installation on pipelines
- 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)
