What does a fraction on top of a plastic ball valve mean
date:2024-05-09 10:29
A fraction of plastic ball valves refer to the size of the diameter and inner diameter of the pipeline. We often encounter customers who do not know how to distinguish the size of pipelines. Today, we will briefly list these fractions, inches, and DN values separately, and classify them by nominal diameter. 1. Small diameter valve: a valve with a nominal diameter DN of 1mm ≤ 40mm. Generally, there are more DN15 needle valves
2. Medium diameter valve: a valve with a nominal diameter DN of 50mm to 300mm.
3. Large diameter valve: a valve with a nominal valve DN of 350mm to 1200mm.
4. Extra large diameter valve: a valve with a nominal diameter of DN ≥ 1400mm~4000mm. (Currently, only butterfly valves have such a large diameter) DN: a size identification for the combination of letters and numbers used in pipeline system components. It consists of the letter DN followed by a dimensionless integer number. This number is directly related to characteristic dimensions such as the aperture or outer diameter (in millimeters) of the end connector. The preferred DN values are as follows:
2 Branches DN8 [3/8 inch] 4 Branches DN15 [1/2 inch] 6 Branches DN20 [3/4 inch] 1 "- DN25-1 inch 1.2" - DN32 | [one and a quarter inch] 1.5 "- DN40 | [one and a half inch] 2" - DN50-2 inch 2.5 "- DN65 [two and a half inch] 3" - DN80-3 inch 4 "- DN100-4 inch 5" - DN125-5 inch 6 "- DN150-6 inch 8" - DN200-8 inch 10 "- DN250-10 inch 12" - DN300-12 inch 14 "- DN350-14" 16 "- DN400-16" 18 "- DN450-18" 20 "- DN500-20" 24 "- DN600-24" 30 "- DN750-30" 32 "- DN800-32" 36 "- DN900-36" 40 "- DN1000-40"
Plastic ball valves are suitable for intercepting flow in the transportation process of corrosive media, with temperatures ranging from -14 ℃ to 100 ℃ and from -40 ℃ to 120 ℃ depending on different materials. All parts are assembled using RPP or PVDF injection molded parts, and the ball valve has excellent corrosion resistance. The sealing ring adopts F4. Excellent corrosion resistance and extended service life. Flexible rotation and convenient use. The integral ball valve has few leakage points, high strength, and is easy to install and disassemble with connected ball valves.
