Shandong Springs valve factory gate valve factory in Shandong, Fujian sell factory gate

Shandong Springs factory gate valve sell / Tel: 0531-88736633,0531-88739933; Contact: Hong Jingli 18663785998; website: www.sdqcfm.com; Shandong Springs Valve Co., Ltd. is a well-known local valve plant in Fujian, Fujian gate production Manufacturers, due to the valve market price affordable, high quality, by the majority of customers! If you need to know valve Which is good, Shandong valve Which is good, Shandong Springs valves, etc. For more information, please call us! Shandong factory gate; Springs valve sell / Tel: 0531-88736633,0531-88739933; Contact: Hong Jingli; 18663785998; website: www.sdqcfm.com; Shandong Springs Valve Co., Ltd. is a well-known local valve plant in Fujian, Fujian valve manufacturer, since the valve market price affordable, quality, quality, by the majority of customers! If you need to know valve Which is good, Shandong valve Which is good, Shandong Springs valves, etc. For more information, please call us!
;;; steel flange globe valve applicable conditions
;;; J41H Flanged steel globe valves for nominal pressure PN1.6 ~ 16.0Mpa,
;;; This valve the use of liquefied petroleum gas reserve station in the city, is also used in a variety of conditions on the operating temperature of -29 ~ 550 ℃ pipeline oil refineries, petrochemical plants, petrochemical plants, pharmaceutical, fertilizer, power industry, liquefied gas systems, or turn off the media, as the control medium lifting device.
;;; cast off valve Applicable medium: water, oil, steam, acid media.
operation ;;; steel shut-off valve: manual, gear transmission, electric, pneumatic.
;;; Flanged steel globe valve product structure characteristics
;;; 1. products according to national standard GB12235, reasonable structure, reliable sealing, excellent performance, beautiful shape.
;;; 2. valve seat sealing surface using cobalt-based alloy cladding Division, wear.
;;; 3. Stem quenched and the nitrogen treatment, with good corrosion resistance and scratch resistance.
;;; 4. can be a variety of standard pipe flanges and flange sealing surface types to meet various project needs and user requirements.
;;; 5. The full range of body materials, packing, gaskets according to actual working conditions or user requirements reasonable matching can be applied to all kinds of pressure, temperature and medium conditions.
;;; 6. inverted sealed with screw connection seal seat or body made of austenitic stainless steel welding, pour reliable sealing, packing replacement and maintenance can be carried out without stopping the machine, convenient and does not affect system operation < br /> ;;; Flanged butterfly valve SUMMARY
;;; Flanged butterfly valve is mandatory sealed valve, so when the valve is closed, pressure must be applied to the valve to force the sealing surface does not leak. When six o'clock the media from below the valve into the valve, the operating force required to overcome the resistance, is the stem and packing friction thrust by the pressure generated by the media, close the valve of the force is greater than the force to open the valve, so the valve The larger the diameter of the rod, or stem benders failures occur. In recent years, from the emergence of self-sealing valve, the medium flow shut-off valve on the change flange into the valve chamber from above the valve, then at medium pressure, a small off valve force, and force open the valve, the valve The diameter of the rod can be correspondingly reduced. Meanwhile, in the role of the media, this form of valve is also relatively tight. China's valve "three to" has been provided, closing the flow valve, should be top-down. When
;;; off valve is open, the valve opening height, the nominal diameter of 25% to 30%, the flow has reached the maximum, indicating that the valve has reached the fully open position. So off fully open position of the valve, the valve stroke should be determined. ; This type valve in the pipe should generally be installed horizontally.
;;; Valve has the following advantages
;;; 1, simple structure, manufacture and maintenance more convenient.
;;; 2, the working stroke is small, open and close a short time.
;;; 3, sealing, and the sealing surface friction force is small, longer life expectancy.
;;; disadvantage shutoff valve as follows:
;;; 1, large fluid resistance, the force required to open and close large.
;;; 2, does not apply with particles, viscosity, easy to medium coke.
;;; 3, adjust the poor performance.
;;; kind off valve stem threads are divided by location external thread type, thread type. According to the flow of media points, straight-through, DC type and angle type. Cut-off valve according to the sealing form points, shut-off valve packing and bellows sealed stop valves. structure
;;; shut-off valve:
;;; cutoff valve body has a formal structure straight-DC and right angle. Straight-through is the most common configuration, but resistance to its maximum fluid. DC-type fluid resistance is small, used for containing solid particles or viscosity of the fluid. Angled body more forged for smaller circulation, high pressure shut-off valve.
;;; operating principle and structure description
;;; 1, when the handwheel clockwise direction, the valve stem moves downward, the valve sealing surface adhesion decline will cut off access. reversal time is open, the valve stem seal acts mentioned on the highest point.
;;; 2, this adds a valve on the seal when the valve is turned on, the two together with the filler seal, and filler has a protective effect
;;; 3, this valve nylon products for the sealing surface, forming filler filler is soft, the sealing material is also soft, good sealing performance. Shandong factory gate