Brass ball valve N10111412 is standard bore designed brass ball valve which has high flow rate and low flow resistance. Butterfly handle (also named as Tee handle) is specialized manufactured to use in small small-spaced applications like water meter box, also suitable for build-in pipelines.

NAFCO is one of the most professional full bore ball valve manufacturers and suppliers in China, our full bore ball valve is from EN13828 standard, forged brass construction, strong enough for many applications. 100% leakage test for each full bore ball valve ensures reliable quality.

Brass ball valve is a device made of brass to control the switch and flow rate of pipeline fluid. Usually the valve body and bonnet of brass ball valve are made of forged brass, the core of the switch mechanism is the brass ball with a hole inside of the brass ball valve, which uses the back and forth action of the ball core to rotate 0-90° around the axis of the valve stem, so as to achieve the purpose of opening or closing the valve.

Brass ball valve specifications are DN8 to DN100 (corresponding to 1/8 to 4 inches), working pressure range is PN8 to PN40 (corresponding to 50 to 600WOG), and operating temperature range is between -20-180 degrees Celsius.

Brass ball valve and stop valve are the same type of valve, the difference only lays in its closing part is a ball or cone. Brass ball valve in which the ball rotates around the centerline of the valve body to open and close. It is usually used in medium and low pressure fluid pipelines to switch off or adjust the medium.

Brass ball valves are mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. It cannot be used as a regulating valve. It can only be fully opened or fully closed when in use. Otherwise, the sealing seat will be easily damaged and corroded.

▶  Valve body: 

The material is brass, and the surface treatment includes nickel plating, chrome plating, natural color and pickling. Chrome plating is more expensive than nickel plating. Different countries and markets require different raw materials.

▶  Valve ball: 

The material is brass, and the surface is chrome-plated. Generally, in order to save cost and facilitate the use of large-sized products, solid balls are used for valves below φ39, hollow balls are used for valves above φ39, and solid balls are generally flat-bottomed balls to reduce weight. The surface roughness and roundness of the ball are one of the most important factors that directly affect the tightness of the brass ball valve.

▶  Low pressure: (nominal pressure)≤1.6MPa

▶  Medium pressure: (nominal pressure) 2.5~6.4MPa

▶  High pressure: (nominal pressure) 10~80MPa

▶  Ultra-high pressure: (nominal pressure)≥100MPa

▶  Ultra low temperature <-100℃

▶  Low temperature -100℃~ -40℃

▶  Normal temperature -40℃~120℃ 

▶  Medium temperature 120℃~450℃

▶  High temperature>450℃

Brass ball valves are made of copper alloys with zinc as the main additive element, and have a beautiful yellow color. They are often used in the manufacture of valves, water pipes, connecting pipes for internal and external air conditioners, and radiators. Brass with different mechanical properties can be obtained by changing the zinc content in brass. The higher the zinc content in brass, the higher the strength and the lower the plasticity. The zinc content of brass used in the industry does not exceed 45%. No matter how high the zinc content is, it will cause brittleness and deteriorate the alloy properties. In order to improve certain properties of brass, the brass that adds other alloying elements on the basis of one-dimensional brass is called special brass. Commonly used alloying elements are silicon, aluminum, tin, lead, manganese, iron and nickel. Adding aluminum to brass can improve the yield strength and corrosion resistance of brass, and slightly reduce the plasticity. Brass containing less than 4% aluminum has good comprehensive properties such as processing and casting. Adding 1% tin to brass can significantly improve the resistance of brass to seawater and marine atmospheric corrosion, so it is called "navy brass". Tin also improves the machinability of brass. The main purpose of adding lead to brass is to improve machinability and wear resistance, and lead has little effect on the strength of brass. Manganese brass has good mechanical properties, thermal stability and corrosion resistance; adding aluminum to manganese brass can also improve its performance and obtain castings with a smooth surface. Brass can be divided into two categories: cast and press-worked products.

Depending on the copper and zinc content of the brass material, we assign brass numbers to form industry norms.

The commonly used brass grades and components are as follows:

Rough color is brass valve body sandblasted and without plating.

Electroplating (nickel-plating and chrome-plating) can enhance the corrosion resistance of full bore ball valves, increase hardness, prevent abrasion, improve conductivity, smoothness, heat resistance.

Full bore ball valve packing is very important for safe transport and brand appearance.

We pack full bore ball valves in small inner boxes, then put them into outer cartons, finally load them in wooden pallets.

It will protect the goods well and can avoid damages and wetness.

We also pack as per customers' OEM designs.

Brass ball valve laboratory test, also known as formal test, is mainly tested by laboratory test equipment in accordance with the brass ball valve test standard. The test items mainly include:

a) Opening and closing torque test: It is very important for users to test whether the torque of the brass ball valve when opening and closing meets the standard.

b) Torsion and bending force test: test the pressure range that the brass ball valve can withstand under the twisting and bending environment.

c) Water pressure test: test whether the tightness and pressure bearing range of the brass ball valve meet the standard.

d) Noise test and requirements: test the noise of brass ball valves in use, mainly for brass ball valves with DN 8 to 32.

e) Service life test: to test whether the opening and closing times of the brass ball valve meet the standard, usually 5000 times for DN8~DN15, 2500 times for DN20-DN25, 1000 times for DN32-DN50, and 500 times for DN65-DN100.

f) High and low temperature test: test the working temperature range of the brass ball valve to meet the standard requirements. 

Compare the rated parameters required by the equipment with the rated parameters marked on the product to ensure that the product meets the required requirements;

The installation personnel must be trained and experienced to ensure the smooth completion of the installation work;

After the installation is completed, a thorough inspection is required to ensure that the installation is correct;

In order to ensure that there are no accidents in the installation work, the piping system should be thoroughly cleaned before the product is installed (chemical reagents are used if necessary) to ensure that the piping system is clean, free of rust and dirt, and it needs to be removed before flushing. go to all filtration devices to make sure the pipes are clear;

It is recommended to install a temporary pipeline at the equipment installation pipeline during the initial cleaning of the system, and then install the equipment on the pipeline after the flushing work is completed;

Note that the equipment should not be used in places where the medium contains more grease, mineral oil and other places with high viscosity or corrosiveness;

Apply a good quality PTFE thread tape to wrap the male ends of pipes or brass ball valves.

Connect the brass ball valve to the pipelines. The brass ball valve operated by the handle can be installed at any position on the pipeline. But the brass ball valve and gear box or pneumatic actuator should be installed upright, that is, in a horizontal pipeline, the transmission device is located in the pipeline,

Install gaskets for brass ball valve threads and pipeline threads according to pipeline design requirements

Tightened the brass ball valves with wrench symmetrically, continuously and evenly.

Tighten till the joint starting to the seat and the pipes, 

Slightly adjust the brass ball valve handle position to favorable direction.

Don't over tighten the brass ball valves, otherwise it may cause damage to the pipeline system.