NAFCO

What Is Thermostatic Valve and How to Select From: NAFCO | Brass Valves China Manufacturer Brass radiator valves are widely used in building automation systems for urban heating, gas supply, air conditioning and refrigeration, etc. brass radiator valves are used to achieve compartment temperature control, which can maximize energy conservation and meet the needs of different users for indoor temperature regulation. The need is a good thing for the benefit of the country and the people. Here, NAFCO introduces you to some tips on brass radiator valves and how to purchase them.     1. The working principle of the thermostatic valves   Temperature control in the user's room is achieved by the radiator brass radiator valve. The radiator brass radiator valve is composed of a thermostat controller, a flow regulating valve and a pair of connecting members, wherein the core component of the thermostat controller is a sensor unit, that is, a warm pack. The tempe...

10 Main Application Fields for Valves Time:2018-10-12 From: NAFCO | Brass Valves China Manufacturer   1. Valves for petroleum installations   1). Refining equipment, most of the valves used in refining equipment are pipeline valves, mainly gate valves, globe valves, check valves, safety valves, ball valves, butterfly valves, steam traps, among which the gate valve accounts for about 80% of the total number of valves. (valves account for 3% to 5% of the total investment of the device)   2). Chemical fiber equipment, chemical fiber products mainly include polyester, acrylic and vinylon. The ball valve and the jacket valve (the jacketed ball valve, the jacketed gate valve and the jacketed shut-off valve) of the valve to be used.    3). Acrylonitrile device. The device generally needs to use the valve produced by the scale, mainly for the gate valve, the stop valve, the check valve, the ball valve, the steam trap, the needle-shaped stop va...

Time:2018-10-09 From: NAFCO | Brass Valves China Manufacturer It is a simple and convenient way to identify the valve with painting.  China valve industry has begun to use painting to identify valves, and has also developed specific standards.  JB/T106 "Vehicle Marking and Identification Painting" standard stipulates the use of five different colors of painting to distinguish the material of industrial valves, but from practical applications, due to the wide variety of valves, the application conditions are complex, only by painting  Identifying the valve body material is difficult.     It is difficult for the user to accurately determine the applicable conditions of the valve by the color of the painting alone.  For similar materials of different grades, although the painting color is the same, the pressure bearing capacity, applicable temperature, applicable medium and weld ability are quite different. It is still necessary to determine...

NAFCO | Technical Requirements Should Attention When Purchasing Brass Valves  From: NAFCO | Brass Valves China Manufacturer Today we talk about the technical requirements should attention when purchasing brass valves, it's extremely imoirtant to ensure every details before purchasing, to avoid any further problems after installation and uses.     1. The specifications and categories of brass valves should meet the requirements of the pipeline design documents   1.1 The model of the brass valve should indicate the national standard numbering requirements. If it is an enterprise standard, the relevant description of the model number should be indicated.   1.2 The working pressure of the brass valve requires ≥ the working pressure of the pipeline. Under the premise of not affecting the price, the working pressure of the brass valve should be greater than the actual working pressure of the pipeline; any side of the brass valve should be close...

From: NAFCO | Brass Valves China Manufacturer What attention should you need when installing brass  valves?  We have 20 tips for you. Brass ball valve 1. When installing the brass valve, it is necessary to clean the inner cavity and the sealing surface, and the connecting bolts are evenly tightened to check whether the packing is tight. 2. The brass valve during installation is in the closed state. 3, large-size gate valve, pneumatic control valve should be installed vertically, so as not to be biased to one side due to the large weight of the valve core, this will cause leakage. 4. There is a set of correct installation process standards. Brass gate valve 5, brass valves should be installed in accordance with the allowed working position, but must pay attention to the convenience of inspection and operation. 6. The installation of the shut-off valve should be such that the flow direction of the medium is consistent with the arrow mark...

The Differences Between Forged Valves and Casted Valves From: NAFCO | China Brass Valves Manufacturer Casting valves are valves made by casting. Generally, the pressure of the cast valves is relatively low (such as PN16, PN25, PN40, but sometimes high pressure can reach 1500Lb, 2500Lb, most of the caliber is more than DN50. Forged valves are forged by machinary, generally used on high-grade pipelines, with small calibers, generally below DN50.                                                       Casted brass bibcock   Casting      1. Casting: It is the process of smelting metal into a liquid that meets certain requirements and pouring it into the mold. After cooling and solidifying and clearing, a casting (part or blank) having a predetermined shape, size and performance is obtained. The basic process of the moder...