Economical Brass Gate Valve

Economical Brass Gate Valve N10131005 is designed for low cost requirement customers and markets, light in weights and low in costs, best choice to save your sales costs and improve sales volume. We have 4 inch gate valve, gate valve 1 inch, 3 inch gate valve, 12 inch gate valve, 6 inch gate valve, 22mm gate valve, gate valve 22mm, 15mm gate valve, welcome to contact us for brass gate valve price list.

There are three different types of brass gate valves: full bore, standard bore, reduced bore, the bigger bore size, the better flow rate,  standard bore economical  brass gate valves are more used. Thread types differ from markets and applications: BSP threads for Europe and NPT threads for North America, also other metric threads, which you must confirm before buying brass gate valves.

HPb57-3, HPb58-3, HPb59-1, HPb59-3 are most common materials used for China PN16 brass gate valves, which are acceptable for most countries in the world, except for those customers have special requirements.HPb57-3, also called China Normal brass, a variant of CW614N brass, is a local industry standard, with little Fe contents in composition, and lower costs than CW614N. It’s widely used as a standardized material in China and accepted by most global markets and customers. HPb58-3, is a variant of CW617N brass and commonly used for PN16 brass gate valves in China local market. HPb59-1, has less Fe, Pb and higher price costs, it’s more used for high-quality products or market, such as brass fittings for USA market.

1. Strength performance

The strength performance of the brass gate valve refers to the ability of the brass gate valve to withstand the pressure of the medium. Brass gate valve is a mechanical product that bears internal pressure, so it must have sufficient strength and rigidity to ensure long-term use without cracking or deformation.

2. Sealing performance

The sealing performance of the brass gate valve refers to the ability of each sealing part of the brass gate valve to prevent the leakage of the medium. It is the most important technical performance index of the brass gate valve. There are three sealing positions of the brass gate valve: the contact between the opening and closing parts and the two sealing surfaces of the valve seat; the matching place between the packing and the valve stem and the stuffing box; the connection between the valve body and the bonnet. The former leakage is called internal leakage, which is commonly referred to as lax closure, which will affect the ability of the brass gate valve to cut off the medium.

3. Flowing medium

After the medium flows through the brass gate valve, there will be pressure loss (that is, the pressure difference before and after the brass gate valve), that is, the brass gate valve has a certain resistance to the flow of the medium, and the medium will consume a certain amount to overcome the resistance of the copper brass gate valve. energy. From the perspective of energy conservation, when designing and manufacturing copper brass gate valves, it is necessary to reduce the resistance of the brass gate valve to the flowing medium as much as possible.

4. Hoisting force and hoisting moment

Opening and closing force and opening and closing torque refer to the force or moment that must be applied to the opening or closing of the brass gate valve. When closing the brass gate valve, it is necessary to form a certain seal specific pressure between the opening and closing parts and the two sealing surfaces of the seat, and at the same time, it must overcome the gap between the valve stem and the packing, the thread between the valve stem and the nut, and the support at the end of the valve stem. It is necessary to apply a certain closing force and closing torque due to the frictional force at the place and other frictional parts. During the opening and closing process of the brass gate valve, the required opening and closing force and opening and closing torque are changed, and the maximum value is closing The final moment or the initial moment of opening. When designing and manufacturing brass gate valves, efforts should be made to reduce their closing force and closing torque.

5. Opening and closing speed

The opening and closing speed is the use of brass gate valves. Some working conditions have special requirements for the opening and closing speed. If some require rapid opening or closing to prevent accidents, some require slow closing to prevent water hammer, etc., which is the choice of yellow The type of copper gate valve should be considered.

6. Action sensitivity and reliability

This refers to the sensitivity of the brass gate valve to changes in media parameters.

7. Service life

It represents the durability of brass gate valves, is an important performance index of copper valves, and has great economic significance. It is usually expressed in terms of the number of openings and closings that can guarantee the sealing requirements, and it can also be expressed in terms of use time.