Handle Butterfly Valve and Worm Gear Butterfly Valve have their own advantages and disadvantages, which one is expensive?

Handle Butterfly Valve and Worm Gear Butterfly Valve have their own advantages and disadvantages, which one is expensive?

Handle-operated and worm gear-driven are two types of operation for manual butterfly valves. The two modes of operation in the use of overlap, for example, in the small diameter, the use of handle butterfly valve and worm gear butterfly valve can be, but most of the time the two in the use of the working conditions is still a certain difference. In this article, OSI valve manufacturer will talk with you about the advantages and disadvantages of handle butterfly valve and worm gear butterfly valve.

Handle butterfly valve and worm gear butterfly valve are collectively known as manual butterfly valve, according to the connection form, there are clamp, flange, clamp, welding and other forms of connection; according to the sealing form, can be divided into soft seal and hard seal two kinds. Handle butterfly valve and worm gear butterfly valve advantages and disadvantages, let's talk about it.

Handle butterfly valve structure is simple, light weight, installation and dismantling, maintenance are very convenient, but because of its own limitations, handle butterfly valve can only be used for small diameter pipeline, usually we stipulate that the caliber of the pipeline is less than DN200MM, you can use the handle to operate, if the caliber beyond the scope of the torque increases, the handle opening and closing will be more and more difficult.

In addition, the handle butterfly valve is generally soft seal, the advantage of this type of valve is that there is a very high sealing performance, can reach zero leakage, good sealing. Handle butterfly valve is not suitable for hard seal, hard seal butterfly valve is generally used in high temperature and high pressure pipeline, with the handle is very difficult to open the valve.

Worm wheel butterfly valve in the use of overlap with the handle butterfly valve, that is to say, in the caliber of 200mm below the top of the butterfly valve, you can also use the worm wheel drive, but compared with the handle operation, the cost will be slightly higher.

Compared with the handle butterfly valve, the advantages of worm gear butterfly valve are also obvious. First of all, the worm wheel butterfly valve can be used on top of large caliber valves, as small as 50 caliber, as large as more than 1 meter caliber, can use worm wheel butterfly valve. In the absence of special requirements hard seal butterfly valve drive is usually to turbo drive.

Handle butterfly valve and worm gear butterfly valve which is expensive?

Worm wheel butterfly valve can do more caliber, so worm wheel butterfly valve is more expensive than handle butterfly valve. In addition, even in the same caliber, material, the same specifications, worm gear butterfly valve manufacturing cost is higher than the handle butterfly valve, the price is also more expensive than the handle butterfly valve.