TTV pneumatic high-performance butterfly valve 
 Working pressure: ≤ 25BAR 
 Flange connection: DIN2501-PN10/16/25-ANSI 150 LBS 
 Design Standard: EN593 
 GB / T 12238 
 Nominal Diameter: DN65-DN300 
 Applications: petroleum, chemical, food, medicine, energy 
 Temperature: -79 ℃ to 180 ℃ (can be different due to material changes) 
 Structure Length: GB / T 12221 J3 Series 
 ISO 5752 Short, series 16 
 BS5155 Wafer Short / Medium 
 DIN 3202 Part3, series K3 
 Top flange: ISO 5211 
 Body material: carbon steel, stainless steel 
 Disc material: carbon steel, stainless steel 
 Stem Material: Stainless Steel 
 Seat Material: PTFE 
 Transmission: manual, worm move, electric, 
 Pneumatic, hydraulic, electro-hydraulic linkage, etc. 
 Leakage class: PATEA EN 12266-2 (zero leakage) 

 Our Company has been inspected by several inspection companies, certifying our products for deliveries to different countries of the world. 
 Our company has passed a number of national quality inspection agency certification proves that our products can be sent to countries around the world. 

 GENERALITIES 
 We have twenty-five years'experience manufacturing butterfly valves, which allows us to offer a highly specialized product that has been tested in all industry sectors. The quality of our valves is fully gusrsnteed, thanks to the technical advice we receive while choosing ma- terials and the hydrostatic tests we carry out on all the products prior to delivery.Our prod-ucts have the typical advantages of butterfly valves, as well as other additional advantages which have been obtained during these last twenty-five years of reseach and development. 
 -Reduced size and weight. 
 -Quick assembly and disassembly. 
 -Easy operation and electric, pneumatic and hydraulic automation. 
 -Self-cleaning, no maintenance required. 
 -Complete tightness and minimal pressure drop. 
 - Single-piece shaft without bolts. 
 Outline 
 We have twenty-five years of the CDs valve manufacturing experience, which enables us to provide you with high quality products, these products are already in various fields has withstood the test of our valves have the absolute quality assurance, because we selection of materials to do more science, and all products are factory tested through rigorous hydraulic After twenty-five years of development history, we have CDs valve products in addition to all the typical advantages, there are many other advantages: 
 - Small size, light weight 
 - Installation, removal and easy to operate 
 - Easy manual operation, electric, pneumatic and hydraulic automation 
 - Automatic cleaning, no maintenance 
 - Completely sealed for maximum packing 
 - Single stem, not bolt. 
 The separation between the flanges should allow free access to the valve with the disk half closed, so the rim is protected and the interference of the elastic rings is reduced during the installation, and the initial value when opening. 
 The gap between the flange plate should be half-off valve allows the valve to enter, so the first time during the installation process and open the valve when the valve seat edge of the ring will be protected and the inside will be reduced. 
 After aligning the valve with the tube flanges, and before tightening the bolts, the disk should be turned until it is completely open.lf it were closed it would twist the ring, so it would expand round the edge of the disk, which woukd create an excessively high torque in the initial opening: it coukd tear or be twisted out of shape permanently. 
 In adjusting the valve and pipe flange location and tighten the bolts before the valve plate should be placed in the fully open position if the valve plate is closed, seals may be distorted, squeezing the edge of the expansion and wrap the valve plate, In the first open cause great moment. seat may thus be torn. twisted cause permanent damage. 
 Las bridas insuficientemente separadas pueden deteriorar el anillo elastico.if the flanges are not sufficiently separated they could damage the elsdtic ring. 
 CDs valve installed, if the flange failed to give adequate space to CDs will damage valve seals. 
 Double eccentric valve metal seal in high temperature environments than airtight rubber seal ring better. 
 Website: http://www.61555678.com 
 Fax :0371 -86,006,138