Forged steel low temperature ball valve

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Forged steel low temperature ball valve Business claims

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Forged steel low-temperature ball valve, specifically can be classified as forged steel check valve, forged steel gate valve, forged steel ball valve, grease pressure semi-free float ball steam trap law was peak and valley changes.

Low-temperature valves forged steel often overlook the problem of grease injection. Grease gun after refueling, the operator low-temperature cut-off valve selection valve and grease injection mode, the grease injection operation. There are two types of forged steel gate valve situation: on the one hand, less injection of fat less, sealing surface due to lack of lubricant and speed up wear and tear. On the other hand, excessive injection of fat, resulting in waste. Is not based on the type of valve type, the different sealing capacity of the valve to accurately calculate. You can calculate the valve size and type of sealing capacity, and then a reasonable amount of grease into the right. Forged steel cryogenic valves often ignore the pressure problem. In the grease injection operation, the injection pressure of semi-free-floating ball type steam trap law was peak and valley changes. Pressure is too low, the seal leakage or safety valve failure, the pressure is too high, the grease valve manufacturers to plug, seal the lipid hardening or sealing ring and valve ball, valve plate lock. Usually the injection pressure is too low, the injection of grease into the bottom of the valve chamber, generally occurs in small gate valve. And grease injection flow control valve pressure is too high, on the one hand check the grease valve mouth, such as fat remote control float valve hole blocking the situation that the spring closed with a wrench to open the state to replace the the other side of the plunger plug valve lipids Hardening, to use the cleaning fluid, repeatedly soften the failure of the sealing grease, and into the new grease replacement. In addition, the sealing type and sealing material, but also affect the injection pressure, different sealing forms have different injection pressure, the general situation hard seal injection pressure is higher than the soft seal. Forged steel cryogenic valve can be classified as forged steel check valve, forged steel gate valve, forged steel ball valve, forged steel globe valve, forged steel check valve, self-sealing gate valve, self-sealing check valve, self-sealing check valve, forged steel Needle valves, forged steel insulation valves, forged steel bellows valves, etc. Forged steel globe valve attention to the problem in the switch bit. Ball valve maintenance are generally in the open state, under special circumstances, choose to shut down maintenance. Other valves can not be able to open position on. Forged steel cut-off valve in the maintenance must be in the closed state, to ensure that the grease filled with sealing groove along the seal, if open, the seal grease is directly fall into the flow channel or valve chamber, resulting in waste. Valve grease, often ignore the effect of grease injection problem. Note the pressure in the injection operation, grease, switch bits are normal. However, in order to ensure the effect of valve grease, and sometimes need to open or close the valve, the lubrication effect is checked to confirm the valve ball or gate surface lubrication evenly. Forged steel check valve to pay attention to the problem of sewage and silk plug pressure relief. Valve pressure test, the sealed chamber cavity gas and water because of the ambient temperature rise and pressure, grease first when the sewage pressure relief, in order to facilitate the smooth injection of fat work. After filling the sealed cavity of the air and moisture are fully replaced. Timely vent valve cavity pressure, but also to protect the safety of the valve. After the injection of fat, be sure to tighten the sewage and pressure relief wire block, to prevent accidents. Note fat, pay attention to the issue of uniform fat. Normal grease, grease from the mouth of the first fat out of the first fat, and then to the low point, and finally a high point, successive fat. If you do not follow the law or not fat, to prove that there is congestion, timely clearance treatment. Forged steel to increase the valve to observe the valve diameter and ring seat flush. Such as ball valve, if there is open bit interference, adjust the opening limiter to confirm the diameter straight after the lock. Adjust the limit can not only pursue the opening or closing one position, to the overall consideration. If the opening level, off is not in place, will cause the valve off lax. Similarly, the adjustment off in place, but also consider the appropriate opening adjustment. To ensure the right-angle valve travel. Note fat, it must seal the grease mouth. To avoid impurities into the mouth, or grease at the lipid oxidation, capping to apply anti-rust grease, to avoid rust. So that the next operation, the application of forged steel cryogenic valve to consider the future of oil delivery in the specific issues specific treatment. In view of the different quality of diesel and gasoline, gasoline should consider the erosion and decomposition. After the valve operation, encountered during the operation of gasoline, timely replenishment of grease, to prevent wear and tear occur. Note fat, do not ignore the fat parts of the stem. Valve shaft parts have sliding sleeve or packing, also need to maintain lubrication, in order to reduce the operation of the frictional resistance, such as can not ensure lubrication, the electric operation torque increases wear parts, manual operation switch effortless. Some ball valve body marked with arrows, if not accompanied by English FIOW handwriting, the role of sealing seat direction, not as a medium flow to the reference, the valve from the vent in the opposite direction. Normally, a two-seated ball valve has a two-way flow direction. Valve maintenance, but also pay attention to electric head and its transmission mechanism in the water problem. Especially during rainy seasons. First, the transmission or drive sleeve rust, the second is frozen in winter. Resulting in electric valve operation torque is too large, damage to the transmission components will make the motor no-load or super-torque protection jump can not achieve electric operation. Damaged transmission parts, manual operation can not be carried out. In the ultra-torque protection action, the manual operation is also unable to switch, such as forced operation, will damage the internal alloy components. Steel and iron are based on iron, with carbon as the main addition of the alloy, collectively referred to as iron carbon alloy. Casting pig iron melting furnace on the melting, that is, cast iron (liquid), the casting of liquid cast iron into the cast, the cast iron called cast iron. The difference between steel and carbon steel in which. Carbon steel (C 0.25 ~ 0.60%); c. High-carbon steel (C 0.60%); (b) high-carbon steel, ). Steel by forming methods: (1) forging (2) cast (3) hot-rolled (4) cold drawn steel.

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