• What are the installation and application methods of plastic ball valves

    Commonly used plastic ball valves include socket type and flanged ball valves. The installation method of the plastic socket ball valve is to fix it on the pipeline with glue or welding. The installation method of the plastic flanged ball valve is to...

  • How to melt and connect plastic valve pipes

    Fusion connection method of plastic valve pipe: 1. Fix and adjust the heating tool: Fix the fixture on the heater, and at most two sets of fixtures can be installed at the same time. 2. Check the temperature: set the temperature on the electronic dis...

  • What is the standard size of plastic pipe valves

    Comparison of standard sizes of plastic pipeline valves: Plastic pipeline valves DN and British NPS are in a semi-understood state that many friends have always been in. Today, we will provide you with a detailed comparison of the standard size of pl...

  • What are the types of valves?

    Types of valves Valves can be divided into gate valves, globe valves, check valves (check valves), ball valves, butterfly valves [center sealing butterfly valves, single eccentric sealing butterfly valves, double eccentric sealing (high performance) ...

  • What is the principle of pneumatic plastic PVC butterfly valve

    Principle of pneumatic plastic PVC butterfly valve: Pneumatic plastic PVC butterfly valve is a pneumatic valve that uses a circular butterfly plate that rotates with the valve man to open and close to achieve activation. It is mainly used as a cut-of...

  • Working principle of plastic butterfly valve

    The plastic butterfly valve (https://www.chinavalvefittings.com/product/valve-series/butterfly-valve/) originated from the American invention of the butterfly valve in the 1930s. The plastic butterfly valve was developed in Japan in the 1950s and was...

  • Common valve failures and treatment methods

    Leakage of valve body: the reason: 1. The valve body has blisters or cracks; 2. Cracking during repair welding of valve body deal with: 1. Polish the suspected cracks and etch them with 4% nitric acid solution. If there are cracks, they can be reveal...

  • How to select the valve? -chinavalvefittings.com

    Valve selection basis 1. Fluid working conditions (pressure and temperature) 2. The nature of the fluid (corrosive, etc.) 3. The purpose of selecting the valve (throttling, pressure control, etc.) Since the valve has a wide range of uses, it also pla...