Characterization heating Q61F is fully welded ball valve with a round ball through holes as opening and closing pieces, the stem around the stem center driven ball rotated 90 degrees to complete the opening and closing function. According to the form of the structure of the ball valve, the main valve floating ball and fixed two; fully welded ball valve made of high quality materials Forged or seamless pipe, steel plate, the whole group welded ball side mounted, flange and neck all-welded connections. Fully welded ball valve has a cylindrical body structure and two forms of all-welded ball valve fully welded construction. DAYU company has a set of mature, low residual stress, low toughness loss of welding technology to the international advanced standards as the basis. According to the nominal size and nominal pressure valve, all-welded ball valve, we can provide are: all-welded and fully welded ball valve fixed floating ball. Customers can use conditions, providing stem lengthened buried fully welded ball valve. Stem extension dimensions are provided by the customer. Ball used to cut off or turn on the line of medium, widely used in petroleum refining, long-distance pipelines, chemical, paper, pharmaceuticals, water, electricity, municipal, steel, etc., particularly in the oil, natural gas, oil depots national reserve and the refinery cracker widely used. Its strength, safety, resistance to harsh environments, such as in the design of special considerations were applied to a variety of corrosive and non-corrosive media. Choice of different materials, respectively for conveying water, steam, oil, natural gas, nitric acid, acetic acid, oxidizing medium, urea. Compact valve structure, reliable sealing, sealing surface and spherical often in the closed state, the media can not easily be eroded, easy to operate. Structural features 1, DAYU fully welded ball valve made of high quality materials Forged or seamless pipe, steel plate, welded the whole group, to avoid any possible media leaks phenomenon. 2, seat piston effect, DAYU production piston valve provides three kinds of effects combinations: ①, upstream and downstream are single-seat piston effect, that DBB function; ②, both upstream and downstream of the valve seat twin piston effect, that DIB -1 function ③, upstream is a single piston effect seat, dual-piston effect downstream seat that DIB-2 function. 3, using a spring-loaded seat composite structure of strong pressure and temperature to adapt to changes, to ensure close contact with the sphere seal, the seal under the premise of ensuring the valve opening and closing a flexible, easy operation. 4, the seat sealing way: primary metal sealing, secondary seal for non-metallic seal. 5, the stem of the blowout preventer designed to prevent improper operation caused by the stem ejected from the valve body. 6, with the fire of anti-static design. 7, seating and stem seal design an emergency sealant injection port. Do not rely on the normal sealing sealant. When the sealing surface damage caused by leaks, can be injected sealant emergency repair. Each greasing install a grease valve orifice and a built-in check valve. 8, outfall and vent. The valve is installed in the lowest position of the drain valve, the valve chamber can vent and sewage; in the upper part of the body has a vent valve is installed, available online on the valve chamber venting and cleaning. Drain valve and vent valve can discharge isolation valve or special fittings to ensure safe, reliable, easy to use. 9, capable of supporting a variety of connecting the disk drive apparatus. Driving device includes a handle, worm gear, electric, pneumatic, gas-hydraulic, electro-hydraulic linkage. 10, the location is easy to adjust. When replacing or installing actuators online, you can not see the ball hole location, BTL ball with a special "detents", can be very easily and accurately find the valve fully open, fully closed position. Facilitate the implementation of the adjustment mechanism limiting device. 11, for the ends of the valve welded connection, you can adjust the valve ends of the material (the transition section) pipeline grades based on user response, in order to ensure the suitability of the material strength and weldability. Both ends of the sleeves of the valve plus, the length of the sleeves of the scene to ensure the welding operation does not affect the sealing materials; 12, buried design. Underground installation of the valve stem lengthened according to needs of the project, in order to operate on the ground, and the corresponding greasing, by extension of the sewage system and vent pipe to the ground. Design Specification Design Standard: ISO14313 / API 6D, GB / T 19672, GB / T 12237 length of the structure: ISO14313 / API 6D, ASME B16.10, GB / T 12221 standard flange: ASME B16.5, ASME B16.47 , GB / T 9113, JB / T 79, HG / T 20592 butt welding connection standard: ASME B16.25, GB / T 12234 fire protection requirements: API 6FA, API 607 ??Pressure test: API 6D, API 598, GB / T 13927 , GB / T 26480 Performance parameters main material: carbon steel, stainless steel, alloy steel nominal diameter: NPS1-1 / 2 "~ 60" DN40 ~ DN1500 Pressure range: Class150 ~ 2500 PN10 ~ PN420 Working temperature: -60 ℃ ~ + 260 ℃ Applications: petroleum, chemical, metallurgy, light industry, power plants, construction of water supply, low temperature conditions and oil, gas, natural gas and other long-distance pipelines. Order prompt a customer if the product has special requirements, must provide the following description in the contract:.... A length of the structure; b connection form; c nominal diameter, full bore, necking, pipe size; d use media and temperature and pressure range;. e testing, inspection standards and other requirements. Second, the factory can configure various types of drives according to customer specific requirements. Third, as provided by the customer to determine when the valve type and model, the customer should correctly explain the meaning and requirements of the model, both parties sign a contract under the same conditions to understand.