Long pipeline of actual working conditions, the installation from the Arctic Circle to the equator, and from the mountains to the ocean floor, from the plateau to the desert, meanwhile through the earthquake zone, swamp, permafrost, rivers, lakes and hills, some erection, some buried underground, in the field operation, maintenance difficulties, requires 30 years service life. General transport medium for long distance pipeline of oil and natural gas, are treated but medium containing sulfur, impurities and foreign bodies, and require the zero-order seal. Therefore, the pipeline ball valve strict technical requirements are put forward. ( 1) Strength and toughness in addition to the internal medium pressure Industrial Valves, is due to environment temperature change under axial tension and stress. Consider landslide, land subsidence, caused by the flood of external load, material should be considered in frigid zone and the freezing region is low temperature impact toughness, prevent brittle fracture at low temperature. For all welded body ball valve, welding seam and heat affected zone, need according to the theory of fracture mechanics, considering its fracture toughness. ( 2) Zero order Industrial Valves requires zero level, in order to ensure effective truncation of downstream end of the line. Considering the metal particles in the medium to the zero order seal, the influence of metal to metal seal as the primary sealing, PTFE/rubber to metal as a secondary seal, and once the seal failure when emergency seal measures should be taken. ( 3) Fire safety and anti-static pipeline ball valve design should be considered fire safety. Once the fire, the valve leakage and the leakage can't leak to the standards set by the API more than 607. Sphere is nonmetal material clamping, may produce electrostatic, conduction, must match the body under the 24 VDC, resistance & lt; 10Ω。 ( 4) DBB function ( 双布鲁克& 流血) In the valve cavity drainage, side seat and the downstream and upstream seat shall be cut off at the same time, to ensure the safety of the emissions. ( 5) To prevent the valve cavity pressure clamping whether the valve is in open or closed position, shall prevent medium was holding in the valve cavity. If the medium may be holding. For gas medium or liquid medium to ensure the automatic pressure relief Industrial Valves cavity, the valve cavity pressure relief does not exceed the maximum of valve pressure rating of 1133 times, the calibre of the external pressure relief valve for DN15 or larger. ( 6) Discharge valve cavity medium can be, and the online with the drain hole on the valve seal test. ( 7) Position indicator whether manual or power driving, should have obvious valve position indicator, shows that the valve is in open or closed position. ( 8) Torque transmission chain transmission chain of design for ball valves at least 2 times the maximum torque. ( 9) Vulcanization conditions on components and bolt material should has the ability of resistance to stress cracking, and meet the requirements of NACE MR0175. ( 10) Emergency cut off the long distance pipeline system USES satellite monitoring and control system, when the pipeline pressure drop rate or duration reaches a certain value, the valve should be emergency cut off. ( 11) All-welded body structure is used in anticorrosion pipeline cathode grounding and outside surface anti-corrosion, prevent the potential of groundwater corrosion and stress corrosion.
If you are looking for convenient, affordable , Mech brings plethora of options to suit your requirements and budget both. Check Mech Valve for more details.
To know more about and the market trends, go to Mech Valve.
Offering a loyalty program not only makes customers feel valued, but it allows Shenzhen Mech Valve Trading Co., Ltd. to easily collect important information about customers.
According to the latest social survey, more than 50 percent of consumers (across all age demographics) follow a brand before purchasing a product. Therefore, Mech's content can make or break a customer's decision to conduct business with you.
Shenzhen Mech Valve Trading Co., Ltd. are providing this to you at very low cost. Our claims are only based on different feed-backs received from various clients and not based on self-judgment.