• + 86 189-639-45675
  • ylei95@gmail.com
  • Mon / Fri - 8 To 18

VALVES PRODUCT NEWS

The advantages and disadvantages of all valves are here

1. Valve selection and setting location: (1) Valves used on water supply pipelines are generally selected according to the following principles: 1. When the pipe diameter is not more than 50mm, a stop valve should be used; when the pipe diameter is more than 50mm, a gate valve or butterfly valve should be used 2, when the flow and water pressure need to be adjusted, a regulating valve and a

Read More »

How to choose valve materials under high temperature conditions?

The high temperature working conditions mainly include sub-high temperature, high temperature class I, high temperature class II, high temperature class III, high temperature class IV, and high temperature class V, which will be introduced separately below. 1. Sub-high temperature Sub-high temperature means that the operating temperature of the valve is in the region of 325 to 425°C. If the medium is water and steam, WCB, WCC, A105, WC6 and WC9

Read More »

Selection and performance of commonly used materials for valves

Common materials for valves (1) Cast iron 1. Gray cast iron, such as HT200, HT lung 0, etc., is suitable for the nominal pressure not greater than PN16, and the working temperature is -10~100℃. For oils and general liquid media (water, steam, petroleum products, etc.) between C, the nominal pressure is not greater than PN10. The working temperature is -10~200℃. Mediums such as steam, general gas, coal gas, ammonia gas

Read More »

Precautions for the selection of conventional valves

(1) Requirements for the use of valves ①Ordinary gate valves, ball valves, and globe valves are strictly prohibited for adjustment according to their structural characteristics. But in process design, it is generally used for adjustment. Due to adjustment and use, the valve seal is in a throttling state for a long time, impurities in the oil scouring the seal, damaging the sealing surface, resulting in lax closing or because the

Read More »

Valve supply requirements

General requirements 1) The valve must be manufactured in accordance with its corresponding technical standards, design drawings, technical documents and the provisions of the order contract. And after passing the inspection, it can be delivered from the factory. 2) When there are special requirements, they should be stipulated in the order contract, and inspection and delivery should be made according to the stipulated requirements. 3) The manufacturer shall supply the

Read More »

Valve maintenance and operation

Maintenance and maintenance of the valve during use The valve should pay attention to maintenance and maintenance during use. On the one hand, good maintenance and maintenance can ensure the reliable operation of the valve, and on the other hand, it can effectively extend the service life of the valve. (1) Cleaning and lubrication of transmission parts The stem thread is an important part of the valve opening and closing

Read More »

The role of control valves in industrial production process control

Basic composition of control system (1) Manual control Take the liquid level control shown in Figure 1-1 as an example to illustrate the related concepts of manual control. The liquid level is a variable that the process needs to control. The operator adjusts the opening of the discharge valve according to the level of the liquid to keep the liquid level at the height required by the process. The manual

Read More »

Classification and use characteristics of control valves

(1) Classification of control valves The adjustment mechanism of the control valve is a device that converts the change in the output displacement of the actuator into a change in the flow area between the valve core and the valve seat of the control valve. Usually, the regulating mechanism is called a valve. According to the nominal diameter, it can be divided into small diameter (DN<40mm), medium diameter and large

Read More »

Ball Valve , Gate Valve , Check Valve , Globe Valve , Butterfly Valve , Plug Valve , DIN Valve , Gost Valve , Bellow Seal Valve , Stainless Steel Pipe , Stainless Steel Flange , Stainless Steel Fitting .

Contact Us

Wuhan Furun Yang Valve Co., Ltd.

  • ylei95@gmail.com
  • Copyright 2020 Valves