Pneumatic Butterfly Valve

Pneumatic Butterfly Valve (Wafer) Nominal Diameter: DN40-600 Pressure Range: 0-16bar Medium Temperature: -20C~+80C Valve Body Material: Gray cast iron, ductile cast iron, cast steel, stainless steel Sealing Material: NBR, EPDM, FPM Valve Disc Material: Ductile cast iron, cast steel, stainless steel, nickel alloy Feature: Double bubble and zero leakage, double (single) stem without pin Applicable Medium: Drinking water, sewage, high-purity water, sea water, air, etc Operating Pressure: 3-8bar PC to carton box, carton box to plywood case

Butterfly valve is closed a disc, around the axis of rotation to achive a valve open and close, in the tube on the main cuttring and throttling. opening and closing is a disc-shiped buttefly plate, the body is around its own axis rotation turn, so as to achieve the aim of opening and closing or adjust. buttefly valve fully open to the barrier is usually less than 90°C, Butterfly valve and the adjusment rod itself-locking ability, for the sake of the butterfly plate positioning, to add worm gear reducer on the valve stem, the use of worm gear reducer, can not only make the butterfly plate with self-locking ability. make the butterfly plate to stop at any position, can also improve the operating performance of the valve. Model of products: D371F-16C D: Valve code: D butterfly valve. 3: Driver code: handle-drive, two screw-link transmission,3 worm transmission,6 pneumatic,9 electric. 7: Link forn code: 4 flange,7pairs of folders. 1. Structure of the code: 0 the center line, a vertical plate, two pairs of eccentric, 3 triple eccentric. F:Sealing material: X-NBR, XE-EPDM,,Xsi slicone Rubber,Xt fluorine rubber, Xt special rubber, F PTFE 16: Nominal Pressure: PN0.6-16Mpa. C: Body Material: Ht200 Cast Iron, C carbon steel, Q-iron.

Features and Benefits The double eccentric design offers an optimal sealing performance. Smart stainless steel seat, very low torque - easy to be operated. The EPDM rubber ring was fixed on the edge of the disc by the retainer ring, easy to be replaced. Eccentric pin connect the disc and stem, not destroy the structure of the stem, make sure the safety and strength. Applicable Standards Design standard: BS5155, EN593, API609 Flange standard: BS EN1092-2 Top flange standard: ISO5211 Face to face standard: BS EN558-1 Pressure test standard: BS EN12266-1, API598 Technical Data Nominal Diameter: DN300~DN2400(12"~96") PN10 DN300~DN900(12"~36") PN16 Temperature Range: -5 C~85 C Sealing test: 1.1PN Shell test: 1.5PN Suitable for: Water, ethylene glycol, non correction medium, etc.

The pneumatic regulating butterfly valve has the advantages of simple and compact structure, convenient processing, easy to manufacture large diameter, self-cleaning action, small drag coefficient and large circulation capacity. It is additionally equipped with a valve positioner, which can be controlled by input control signals (4-20mADC) and a gas source of 0.4-0.7MPa. Pneumatically regulated butterfly valves are suitable for the regulation of fluids in suspended particles and in concentrated, turbid slurry fluids. Clean media can be replaced with a valve plate with a soft seal (rubber ring, PTFE ring) to reduce leakage (up to zero leakage). The high-temperature and high-pressure working conditions can be selected by a three-eccentric hard sealing valve body. Pneumatically regulated butterfly valves are the best means of regulating flow and shutting off fluids in automated control systems. Therefore, the pneumatic regulating butterfly valve is widely applied to the pipeline of corrosive medium such as metallurgy, electric power, petroleum, chemical, air, gas, combustible gas and water supply and drainage with medium temperature â?¤550°C.

Product Name: Stainless Steel Food Grade Sanitary Hygienic Manual Welded Butterfly Valve Valve Body Material: 1.4404/1.4301, SS304/SS316L(Forged) Disc: 1.4404/1.4301, SS304/SS316L(Forged) Seal Material: EPDM (standard) conforms to FDA177.2600 Operating Principles The butterfly valve can be operated automatically through actuator.The actuator push piston of axial movementinto 90 degree so that it controls butterfly valve Surface Finishing RA

Applicable fluid medium: water, air, oil, corrosive chemical liquid For example: piping systems for pure water and raw drinking water, drainage and sewage piping systems, salt water and sea water piping systems, Acid-base and chemical solution systems and other industries. Body material: UPVC Transmission mode: electric; 90 angular stroke rotary electric drive Actuator material: cast aluminum alloy/plastic shell Protection device: overheating protection Action time: 4-30 seconds Nominal pressure: 1.0Mpa Nominal diameter: DN15-200 Protection level: IP65 Fluid temperature: -15�°C - 60�°C (no freezing) Ambient temperature: -25�ºC-55�ºC Power consumption: 8VA-30VA Installation method: installation at any angle (horizontal installation is best for prolonging life) Power supply voltage: standard AC220V, optional DC24V, AC110V Voltage tolerance: ±10%, DC tolerance ±1% Connection method: internal thread, bonding (welding), flange, double union

Butterfly valve is closed a disc, around the axis of rotation to achive a valve open and close, in the tube on the main cuttring and throttling. Opening and closing is a disc-shiped buttefly plate, the body is around its own axis rotation turn, so as to achieve the aim of opening and closing or adjust. Buttefly valve fully open to the barrier is usually less than 90c, butterfly valve and the adjusment rod itself-locking ability, for the sake of the butterfly plate positioning, to add worm gear reducer on the valve stem, the use of worm gear reducer, can not only make the butterfly plate with self-locking ability. Make the butterfly plate to stop at any position, can also improve the operating performance of the valve. Model of products: D371f-16c D: valve code: d butterfly valve. 3: driver code: handle-drive, two screw-link transmission, 3 worm transmission, 6 pneumatic, 9 electric. 7: link forn code: 4 flange, 7pairs of folders. 1. Structure of the code: 0 the center line, a vertical plate, two pairs of eccentric, 3 triple eccentric. F:sealing material: x-nbr, xe-epdm, , xsi slicone rubber, xt fluorine rubber, xt special rubber, f ptfe 16: nominal pressure: pn0.6-16mpa. C: body material: ht200 cast iron, c carbon steel, q-iron.

Sudhanafluid pneumatic valve series: butterfly valve The butterfly plate of the butterfly valve is installed in the diameter direction of the pipe. In the cylindrical channel of the butterfly valve body, the disc shaped butterfly plate rotates around the axis with a rotation angle of 0 �°~90 �°. When the rotation angle reaches 90 �°, the valve is fully open. The butterfly valve is simple in structure, small in volume and light in weight, and only consists of a few parts. Moreover, the valve can be quickly opened and closed only by rotating 90 �°, which is simple to operate. At the same time, the valve has good fluid control characteristics. When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the resistance when the medium flows through the valve body, so the pressure drop generated by the valve is very small, so it has good flow control characteristics. The butterfly valve has two sealing types: elastic seal and metal seal. For elastic sealing valves, the sealing ring can be embedded on the valve body or attached to the periphery of the butterfly plate. The valve with metal seal is generally longer than the valve with elastic seal, but it is difficult to achieve complete sealing. The metal seal can adapt to higher working temperature, while the elastic seal has the defect of being limited by temperature. If the butterfly valve is required to be used for flow control, the main thing is to correctly select the size and type of the valve. The structure principle of butterfly valve is especially suitable for making large diameter valves. Butterfly valves are not only widely used in petroleum, gas, chemical industry, water treatment and other general industries, but also used in the cooling water system of thermal power plants. There are two kinds of butterfly valves commonly used: wafer type butterfly valve and flange type butterfly valve. Wafer type butterfly valve uses stud bolts to connect the valve between two pipe flanges. Flange type butterfly valve has flanges on the valve, and bolts are used to connect the flanges on both ends of the valve to the pipe flanges.

Butterfly Valve