U.S. COPES-VULCAN minimum flow valve is used to power – valves, control valve –
Because Control Valve Resulting in reduced leakage power plant capacity issues still exist in some plants, this problem has long plagued the world's electricity industry, some of this lost power generation capacity up to 10%. Typical example is Boiler To Pump Minimum flow Valve This Valve Need to run about 95% of the time to withstand up to 5000psig (350Kg.f/cm) of pressure. Once the leakage, the loss will be considerable.
U.S. DeZURIKCopes-Vulcan's patented combination of non-metallic valve seat structure HUSH final settlement of the operation in harsh operating conditions the valve leakage problems. The structural design that is economical and reasonable, not only solves the pressure control valve in the leakage problems and improve the plant's production efficiency, while reducing maintenance costs valve. This valve features double-double valve plug seat structure, the main valve seat between the plug and non-metallic co-ordination function is to ensure that the valve during the use of zero-leakage, metal valve seat inside the valve plug with the functional for the throttle and the protection of non-metallic valve seat. In addition, this valve structure and DeZURIKCopes-Vulcan's HUSH sleeve structure phase combination, but also eliminates cavitation damage arising on the role of the spool.
Operating experience: Since May 1985 has been put into operation, non-metal valve seat, and HUSH composite structure has been found in many plants used as boiler feed water Pump Preferred minimum flow valve spool. This composite structure has been shown to actually run the test and to achieve zero leakage and then close Close
Practical application: Non-metallic valve seat and HUSH composite structure not only as the new design of the spool valve, but also to achieve the purpose of transforming the production, to replace the old spool. When the valve is under pressure up to 5000PSI and long-term is turned off, the non-metallic valve seat structure of composite structures HUSH mouth is the only meet the requirements and to ensure zero leakage valve.
DeZURIK / Copes-Vulcan minimum flow valve company
This product DeZURIK ® CopesVulcan company bad condition, valves, piping design for the body with the use of straight-through structure, and has enough space for fluid flow control valve structure and a reasonable range, the product valve unique multi-core use step-down hierarchical structure of the sleeve to address the anti-cavitation and noise problems; the main valve plug with soft valve seat ring of surface contact (rather than line contact) to ensure zero leakage; secondary valve plug and the metal valve Block match play and the protection of the main valve closure plug and the role of the soft seat to achieve zero leakage in this; built-in type filter can stop the flow of impurities into the valve to ensure the safe operation of the valve. After decades of the product to run tests to prove as DeZURIK ® CopesVulcan company's patented product, reasonable design, excellent performance.
high quality materials, using the latest technology made of a multi-polar structure of the sleeve valve cavitation, noise reduction, anti-erosion characteristics of a large pressure conditions, using the sequential method to control blood pressure medium velocity.
unique soft Seal Designed to achieve the full Zero leakage valve standard, because the metal seal to avoid the pressure differential in the context of long-term micro-leakage flow and cause seating out of control deficiencies. Soft seat with aerospace materials, resistant to high temperature and erosion.
double-seal design, a unique dual valve plug interlocks, the outer valve plug and metal seal between the metal valve seat, the inner valve plug with soft seal between the soft seat. In the valve opening and closing moments, always to metal seal as a throttle, and protect against erosion of soft seal long-term damage, to ensure long-term seal tightly. Plug the two valve springs with a high temperature and high pressure to achieve the linkage role of cleverly designed, reliable operation
As completed and overhaul units start in the beginning, medium impurities, easy plug and damage production of precision disc, set the filter to protect the entrance to the spool valve, filter for high-strength double layer stainless steel mesh , the flux is twice the maximum flow valve design. This filter proved the test of practice over the long term protective effect on the spool is very effective to avoid unnecessary damage and maintenance.
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