CBM Marine Valve
CBM Marine Valve Introduction:
The face to face distance dimensions and flanges of CBM Marine Valve is the same as JIS marine valve. For example: CBM1041 sea valve is the same as JIS F7350. CBM1078 self closing valve is the same as JIS F7398. CBM1091 gate valve is the same as JIS F7363. CBM1092 gate valve is the same as JIS F7366. CBM1090 gate valve is the same as JIS F7367.
CBM Marine Valve Classification:
Main Products:
CBM Marine Valve
CBM 1069-81 Bronze Globe Valve, CBM 1070-81 Bronze SDNR Valve, CBM 1075-51 Bronze Stop Valve, CBM 1076-81 Bronze Stop Check Valve, CBM 1077-81 Bronze Lift Check Valve, CBM 1080-81 Bronze Packed Coke, CBM 1107-82 Marine Bronze Fire Valve.
CBM 1081-81 Cast Iron Globe Valve, CBM 1082-81 Cast Iron Globe Check Valve, CBM 1087-81 Cast Iron Stop Valve, CBM 1088-81 Cast Iron Stop Check Valve, CBM 1089-81 Cast Iron Lift Check Valve.
CBM 1037-81 Cast Steel Storm Valve, CBM 1041-81 Cast Steel Suction Sea Valve, CBM 1048-81 Cast Steel Stop Valve, CBM 1049-81 Cast Steel Stop Check Valve, CBM 1050-81 Cast Steel Check Valve, CBM 1051-81 Cast Steel Valve, CBM 1052-81 Cast Steel Stop Check Valve, CBM 1053-81 Cast Steel Non-Return Valve, CBM 1057-81 Cast Steel Globe Valve, CBM 1091-81 Cast Steel Gate Valve, CBM 1092-81 Cast Steel Gate Valve, CBM 1090-81 Cast Steel Gate Valve.
CBM Marine Valve
Specific Difference Between Us and Other Suppliers
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Comparison |
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Product Picture of other low quality supplier
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Product Picture of our factory
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Other low quality supplier |
Consequence |
Our Factory
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Result |
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In order to reduce costs, some factories refurbish old valves and repaint them for secondary sales. |
It brings a great safety hazard to the quality of the project. The valve is prone to cracking of the shell, and in severe cases, it will cause the explosion of the oil and gas pipelines. |
Manufacture brand new valves in strict accordance with customer material requirements, never shoddy. |
Meet the hardness and precision requirements of standard valves, ensure valve quality, and ensure normal operation of equipment. |
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In order to reduce costs, the factory omits raw materials, which will reduce the amount of valve body materials, resulting in thin valve body walls. |
The thin wall of the valve body is easy to break or leak at high temperature and high pressure or during operation. |
Strictly follow the standard processing, do not cut corners, strictly use the materials according to the regulations |
Use it with confidence, meet the needs of users, and the valve has a longer service life. |
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Poor filler quality, there are defects such as loose fillers, burrs, dryness, impurities, etc. |
Lead to packing failure, easy to produce medium leakage, valve easy to malfunction. |
High-quality fillers are selected, and there is no loose, impurity and other phenomena. |
The valve has good sealing and wear resistance, and it is not easy to cause leakage of the medium, and the valve has a longer service life. |
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Use iron and carbon steel to make valves to pretend to be new valves |
Such products generally have large errors in hardness and accuracy. It is easy to cause the shell to crack, and the phenomenon of running, running, dripping and leaking occurs, and in severe cases, the oil and gas pipelines will explode. |
Manufacture new valves in strict accordance with customer material requirements, and never pretend to be inferior products |
Meet the hardness and precision requirements of standard valves, ensure valve quality, and ensure normal operation of equipment. |
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In order to reduce cost, bronze valve core is replaced with cast iron valve core, |
Cast iron valve core is easy to corrode and break |
Strictly select materials according to user requirements, never pretend to be bronze with cast iron |
High safety factor and reasonable structure. |
The valve in operation, various valve parts should be complete, intact. Bolts on flange and bracket are indispensable, threads should be intact, no loosening is allowed. Tighten the fastening nut on the hand wheel in time if it is found to be loose, so as not to wear the connection or lose the hand wheel and nameplate. If the hand wheel is lost, it is not allowed to replace it with a adjustable wrench. Packing gland is not allowed to be skewed or without pre-load clearance. For the environment susceptible to rain, snow, dust, sand and other dirt contaminated valve, the valve stem to install a protective cover. The scale on the valve shall be complete, accurate and clear. Valve seal, cap, pneumatic accessories should be complete and intact. Insulation jacket should not sag, crack. It is not allowed to knock, stand or support heavy objects on the running valve. In particular, non-metallic valves and cast iron valves should be prohibited.
The professional maintenance of valves before and after welding production plays a vital role in the production and operation of valves. Correct and orderly and effective maintenance will protect valves, make them function normally and extend the service life of valves. Valve maintenance seems simple, but it is not. There are often overlooked aspects of work.
1. The quantity of valve grease is often ignored. After the grease gun is refueled, the operator selects the valve and grease connection mode to carry out grease injection. There are two situations: on the one hand, less fat injection is insufficient, and the sealing surface is accelerated by the lack of lubricant. On the other hand, excessive fat injection, resulting in waste. There is no accurate calculation of different valve sealing capacities based on valve type and category. The sealing capacity can be calculated by valve size and type, and then reasonable injection of appropriate grease.
2. The pressure problem is often ignored when the valve is greased. During the operation of fat injection, the pressure of fat injection showed a regular peak and valley change. If the pressure is too low, the seal leakage or failure, if the pressure is too high, the grease injection mouth is blocked, the grease in the seal is hardened, or the sealing ring is locked with the valve ball and valve plate. Usually when the grease injection pressure is too low, the injected grease flows into the bottom of the valve chamber, which generally occurs in small gate valves. If the fat injection pressure is too high, on the one hand, check the fat injection nozzle and replace it if the blockage of the fat hole is identified; On the other hand, grease hardening, to use cleaning liquid, repeatedly soften the failure of the sealing grease, and injection of new grease replacement. In addition, sealing type and sealing material also affect the grease injection pressure, different sealing forms have different grease injection pressure, in general, the hard seal grease injection pressure is higher than the soft seal.
3. When greasing the valve, pay attention to the valve in the switch position. Ball valve maintenance is generally in an open state, special circumstances choose to close the maintenance. Other valves should not be open. Gate valve in maintenance must be in the closed state, to ensure that grease along the sealing ring full of sealing groove, if open, sealing grease will directly fall into the flow channel or valve chamber, resulting in waste.
4. The effect of valve grease injection is often ignored. The pressure, the amount of fat and the switch position are all normal in the operation of fat injection. But in order to ensure the valve grease effect, sometimes need to open or close the valve, check the lubrication effect, confirm the valve ball or gate surface lubrication is uniform.
5. When grease injection, attention should be paid to the valve body sewage and silk blockage pressure relief problems. After the pressure test of the valve, the pressure of the gas and water in the sealed chamber valve chamber is increased due to the rise of the ambient temperature, so the pressure relief of sewage discharge should be carried out first to facilitate the smooth operation of the grease injection. After grease injection, air and moisture in the sealed cavity are fully displaced. Timely discharge valve chamber pressure, but also to ensure the safety of the use of the valve. After grease injection, the drain and pressure relief wire must be tightened to prevent accidents.
6. When filling fat, pay attention to the problem of fat uniformity. In normal fat-injection, the nearest fat-outlet hole from the fat-injection port first gives fat, then to the low point, and finally to the high point, successive fat. If not according to the rule or no fat, prove the existence of blockage, timely clearance treatment.
7. Grease injection should also observe the valve diameter and sealing ring seat flush problem. For example, ball valve, if there is interference, can be adjusted to the opening limit inward, confirm the diameter straight after locking. Adjust the limit can not only pursue on or off position, to consider the whole. If the opening position is even and the closing is not in place, the valve will be closed loosely. Similarly, adjust the switch in place, also consider the corresponding adjustment of the open position. Ensure right Angle stroke of valve.
8. After grease injection, be sure to seal the grease injection port. Avoid impurities into, or grease mouth grease oxidation, cover to smear anti-rust grease, to avoid rust. So that it can be applied the next time.
9. When grease injection, we should also consider the specific problems in the future oil sequence transportation. In view of the different quality of diesel and gasoline, the scour and decomposition capacity of gasoline should be considered. In the future valve operation, when encountering gasoline section operation, timely add grease to prevent wear.
10. When greasing, do not ignore the valve stem part of the grease. Valve shaft parts sliding sleeve or packing, also need to maintain lubrication, in order to reduce the friction resistance during operation, such as lubrication can not ensure, the electric operation torque increases wear parts, manual operation switch laborious.
11. Some ball valve body is marked with arrows, if there is no English FIOW handwriting attached, it is the direction of the sealing seat, not as a reference to the flow direction of the medium, the direction of valve self-discharge is opposite. Normally, two - seat sealed ball valves have two - way flow.
12. Valve maintenance, but also pay attention to the water in the electric head and its transmission mechanism. Especially water that seeps in during the rainy season. One is to make the transmission mechanism or drive shaft sleeve rust, two is frozen in winter. Cause the electric valve operation torque is too large, damage to the transmission parts will make the motor no load or ultra torque protection jump can not achieve electric operation. Transmission parts damaged, manual operation can not be carried out. After the over torque protection operation, manual operation also cannot be switched, if forced operation, will damage the internal alloy parts.
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