If the valve is in a large throttling range, the back of the butterfly valve plate is prone to cavitation, which will increase the possibility of valve damage. Therefore, generally speaking, pneumatic butterfly valves are used outside 15 °.

Operating skills of pneumatic butterfly valve enterprises to reduce marketing costs
1、 Combination of main and auxiliary
New method of product marketing: facing fierce market competition in the future, enterprises should formulate a set of common plans for product campaigns to enrich and tap the market potential of their products. The main products with market competitiveness are regarded as important profit sources, and other products are regarded as auxiliary products. When the auxiliary products need, they can also escort the main products as sacrificial products. For example, buy the top coat and give away the primer. However, although we have sacrificed a certain product in the market competition, we have expanded the market share of the main product, and the growth of the sales volume of the main product will surely win considerable profits for the enterprise.
2、 Deal with the relationship between input and output
In the face of increasingly fierce competition, maximizing efficiency and making good use of every fund is the first factor for Tu Enterprises to carry out low-cost marketing. When some Tu enterprises just started to explore the market, they often thought of spending money to make advertisements to reach the purpose of attracting investment. However, in the current situation where there are many advertisements, what percentage of the targeted customers do the manufacturers make advertisements? How many people read your confession and remember it? What is the result?
Especially in the environment of insufficient capital budget of Tu Qi, this topic must be carefully considered, although even if unnecessary and ineffective efforts are eliminated, unlimited funds should be used for more effective accidents.
The author suggests that some second tier enterprises should not put heavy money on the large CCTV advertisements, but should avoid the truth and take advantage of the weakness, and not argue with front-line brands such as Nippon. The funds will be used in how to improve product quality, how to complete useful marketing, terminal blocking, community promotion, and how to provide useful services for dealers. Eliminate the cost of advertising, strengthen the investment in dealers, and provide dealers with cost-effective and competitive services.
3、 Dealers' choice
Many Tu enterprises do not choose clothes in terms of the choice of agents. They often only value the amount of the first payment collected by the dealers, regardless of the strength of other aspects of the dealers. Many painting enterprises are indifferent after selling their goods to dealers, which has led to the development and downfall of a number of painting enterprises, making their selling costs high.
In order to grow in the long run, the selection of agents depends on the strength of dealers, the concept of dealers, and the spread of dealers' sales collection.
Only dealers with financial strength have the ability to dominate the market; The intelligent dealers will share weal and woe with the enterprise and dominate the market according to market discipline; Dealers with a large number of sales outlets are the fundamental guarantee for becoming bigger and stronger. Tu Qicai used the collection and distribution of dealers to enter the terminal store.
Tu enterprises can enrich the collection of dealers' brewing costs, really train this collection, and really make the collection exert influence. Tu enterprises can not only collect useful application sales, but also constantly organize agents and distributors to hold suspension training, so as to improve their own essence and level of suspension. Not only did he become intimate with the manufacturers, but also his product selling deeds continued to expand.