Chinese manual ball valve

Manual ball valve, three-piece ball valves and gate valves are belong to the same type of valve, except that it's closing member is a sphere, the sphere around the center axis of the valve to open and close a valve. Valve in the pipeline is mainly used for cutting, distribution and change the direction of media flow. A new three-piece ball valves are widely used in recent years, this valve in the pipeline should generally be installed horizontally.

manual industrial brass ball valve

A. manual ball valve has the following advantages:

1. Fluid resistance, the pipe resistance coefficient with the same length are equal.

2. Simple structure, small size, light weight.

3. Close and reliable valve sealing surface material widely used plastic, sealing, and has been widely used in the vacuum system.

4. Easy to operate, opening and closing rapidly, from fully open to fully closed as long as the rotation 90 °, to facilitate remote control.

5. Easy maintenance, simple ball valve, seals are generally activities, the removal replacement is more convenient.

6. In the fully open or fully closed, sealing surface and the dielectric isolation ball and seat, through the media, will not cause erosion of the valve sealing surface.

7. Wide range of applications, from small to a few millimeters in diameter, large meters, from high vacuum to high pressure can be applied.

Manual ball valve can be divided according to their channel positions straight-through, three-way and right angle. The latter two ball valves for dispensing media and change the flow of media.

B. manual ball valve rotary valve works by love to make the valve flow or occlusion. Valve switch light, small size, can be made into a large-caliber, reliable sealing, simple structure, easy maintenance, spherical surface and seal often in the closed state, can not easily be medium erosion in various sectors has been widely used.

C.manual ball valve in the pipeline is mainly used for cutting, distribution and change the direction of media flow.

Manual ball valve is a relatively new category, it has its own unique structure of some advantages, such as switches without friction, seal easy to wear, small opening and closing torque. This reduces the actuator with the specifications. With multi-turn electric actuators can be realized on media regulation and tight cut. And widely used in petroleum, chemical industry, urban water supply and drainage and other demanding cutting conditions.

Bright Best air conditioning is a chinese private group of companies established in 2012 and specialised in heating and air conditioning parts.

Our workers have years of production experience in fan coil unit,industrial valve,air curtain,air conditioning thermostat,corrugated stainless steel tubing.Mr Ding, our technical manager has eight years of experience in the field of air conditioning and refrigeration.

Brightbest is provided with quality certification according to ISO9001:2000 , SO14001:2004 ,CE and is strongly committed to customer satisfaction.

We guarantee each product through rigorous testing.Our goal is to provide quality products on a timely basis. We pride ourselves on our ability to offer technical knowledge and advice to our customers as well as product of the highest quality.

Our products have been exported to UK, France, Italy, Middle East, Australia,and Africa etc.OEM and minimum orders will be welcome.

Basic maintenance of valves

1. The valve should be kept dry and ventilated room, both ends of the access to be blocked.

2. Long-term storage of the valve should be checked regularly to remove dirt and machining surface coated with anti-rust oil.

3. After installation, periodic inspection, the main test items:

(1) sealing surface wear. (2) stem and stem nut trapezoidal thread wear. (3) packing Obsolescence failure, should be replaced if damaged (4) valve repair assembly, the sealing performance test should be carried out

Before production and post-production of professional valve maintenance work prior to welding, the valve service in manufacturing operations plays a vital role in the proper and orderly and effective maintenance will protect the valve, the valve to function properly and to extend the use of the valve life. Valve maintenance work may seem simple, it is not. Work often neglected aspect.

1, the valve greasing, the grease quantity is often overlooked problem. After greasing refueling, the operator selects the valve and coupling greasing the way, were greasing operation. There are two cases: one injection insufficient greasing less grease, sealing surface due to lack of lubricant accelerate wear. On the other hand excess grease, resulting in waste. That there is no regulator valve according to the type of category for different valve sealing capacity for precise calculations. Can be calculated valve size and sealing capacity category, and then injected into a reasonable amount of grease.

2, valve grease, often ignore the problem of pressure. In operation grease, grease pressure regularly showed peak changes. Pressure is too low, seal leakage or failure, the pressure is too high, the grease port plug, sealed lipid hardening or seal with the valve ball, valve plate locking. Typically grease pressure is too low, the grease inject more into the bottom of the valve chamber, generally occurs in a small gate. The grease pressure is too high, on the one hand to check the grease mouth, hole blocking ascertain the situation in the case fat replacement; on the other hand is a lipid hardening, to use cleaning fluid, repeated failure to soften the seal fat, and inject new grease replacement . In addition, the seal type and sealing materials, also affected the grease pressure, different forms have different sealing resin injection pressure, in general, hard seal grease pressure is higher than the soft seal.

3，the valve greasing, note the position switch valve in question. When valve maintenance is generally in the open position state, choose to close maintenance under special circumstances. Other valves in the open position can not always be punished. Gate when conservation must be turned off to ensure full of grease along the ring seal grooves, if the open position, sealing grease directly fall into the flow channel or valve chamber, resulting in waste.

4, the valve grease, often ignore the grease performance issues. Operating pressure grease, grease, switch position are normal. However, to ensure that the valve greasing effect, and sometimes need to open or close the valve, for lubrication check to make sure the valve ball or gate valve surface lubricity evenly.

5, grease, pay attention to body drain plugs and pressure relief problems. After the pressure test valve, the valve chamber sealed chamber gas and water due to environmental temperature and boost, to conduct the sewage grease relief when, in order to facilitate the smooth progress of grease injection work. After greasing air and moisture sealed chamber is sufficiently displace. Timely vent valve cavity pressure off, but also to protect the use of safety valves. After greasing, be sure to tighten the wire blocking the sewage and pressure relief, to prevent accidents.

6, grease, pay attention to the problem of fat evenly. Normal grease from grease port hole nearest the fat out of fat first, and then to a low point, and finally the high point, successive out fat. If you do not follow the law or no fat, prove the existence of plug, clean through timely treatment.

7, we must observe the valve size and seat ring flush problems greasing. Such as ball valves, open position if there is interference, can be adjusted to the stopper in the open position, the lock confirmation straight path. Adjust the limit should not only seek one position on or off, to consider the overall. If the open position flush, customs are not in place, it will cause the valve closed lax. Similarly, adjust the clearance in place, but also consider open position accordingly. Ensure the right angle valve stroke.

brass air vent valve-705/release valve

8, after greasing, some seal grease port. Avoid impurities entering, or greasing mouth lipid oxidation, capping to apply anti-rust grease to avoid rusting. To apply when the next operation.

9, grease, it should also be considered in the future delivery of oil in order to treat specific issues. In view of the different quality of gasoline and diesel should be considered erosion and decomposition gasoline. When the valve after the operation, encountered gas segment operations, replenish grease to prevent wear from happening.

10, grease, do not ignore the stem portion of greasing. Sliding sleeve valve shaft portion or filler, and the need to maintain lubrication to reduce friction during operation, if they can not ensure the torque increase lubrication and wear parts, the electric operation, switch laborious manual operation.

11, some marked with an arrow on the valve body, if not accompanied by an English FIOW writing, for the sealing seat role in the direction, not as a reference medium flow, since the vent valve in the opposite direction. Typically, two-seater with two-way flow valve seal.

12, valve maintenance, and also pay attention to the electric actuator head in water issues. Especially in the rainy season, rainwater infiltration. First, make the actuator shaft sleeve or rust, and second, the winter freeze. When the electric valve operating torque causing excessive damage to transmission components cause the motor torque load or super jump can not be achieved to protect electric operation. Damage to transmission parts, can not be performed manually. After the super torque protection action, it is also unable to manually switch, such as the forced operation, damage to the internal parts alloy.

To sum up, the valve maintenance To correct attitude in order to achieve the purpose of the valve maintenance and application of the desired effect.

Central air conditioning condenser cleaning procedures and precautions

Central air conditioning condenser can easily scale, the normal cooling in the summer of treatment should be done daily, otherwise it runs in an environment of high hardness, dissolved in water in the circulating water system inorganic salt will crystallize as the temperature rises precipitated the formation of scale on the wall of the condenser heat transfer surface, resulting in reduced heat exchange efficiency. At the same time hard scale is increased, the increase in energy consumption will increase when the hard knot scale 1mm thick 6 to 10. As the water soil, sediment, soil humus formation, with bacteria, algae and other microorganisms and the formation of secretions biological slime, will be attached to the condenser heat transfer tubes formed on the walls dirt, causing severe pipeline clogging; and dirt, slime will affect the heat exchange efficiency, more power can cause high voltage operation, causing severe overpressure shutdown . All this has seriously affected the normal operation of the condenser. Condenser cleaning is divided into physical cleaning and chemical cleaning, general physical cleaning with high pressure water jet condenser brass dirt cleaned out; if scaling a hard scale, should be carried out chemical cleaning, the scale can not be physically removed.

In order to optimize the condenser run in the state, it must condenser specialized chemical drug treatment, removal of scale, rust, slime, antiseptic and anti-corrosion treatment, reduced to clean metal surfaces.

Operating procedures:
(1) Close the valve out of the water, open the drain valve, check valve is closed and out of the case.
(2) Open the condenser cover, take a little scale on the brass surface with descaling agent do different concentration ratio of cleaning tests.
(3) The method by low prices, connected properly cleaning pump.

(4) the use of an external pump, to the bucket filled with water, start the cleaning pump cycle to smooth water.
(5) several times to slow the bucket plus YX-22 detergents. After repeated washing with tap water cycle to PH value to about 7.
(6) rinsed with tap water cleaning pump.
(7) Open the cover using Yaxin automatic machine guns pass through gun.

First, the physical cleaning

1.1 host physical gun suitable for water walking through the sediment and rust clogging the tube more serious equipment, such as a severe blockage before chemical cleaning equipment must first pass a physical gun.
1.2 Close out of the water valve, open the drain valve, check valve is closed out, the water will drain and clean the heat exchanger.
1.3 Opening the need to clean up parts of the cap, taking pictures, taking dirt samples for analysis.
1.4 The use of brass Yaxin through automatic machine guns, water cannons, and other tools to clear the rod clean.
1.5 Water indoor dirt floor clean, anti-rust paint brush, paint dry, take pictures.
1.6 test standard brass without clogging silt cleaning rate of 95%
1.7 open site restoration, pressure test watertight.

Second, chemical cleaning
The method uses a single professional cleaning cycle, using efficient detergents for Copper Tube ten times lower than that of an inorganic acid, based on the effective protection of equipment on the fast cleaning, descaling. After washing of brass pre-film treatment, can greatly slow down the corrosion rate of the device.

Bright Best air conditioning is a chinese private group of companies established in 2012 and specialised in climate technology.Which it has expanded over the years to a wide spectrum of products and services for air conditioning,treatment and ventilation,as well as heating systems for both industrial and domestics sectors.

Brightbest own the wide products include fan coil unit,brass ball valve,corrugated tube ,air conditioning thermostat and air curtains manufacturers.

Brightbest is provided with quality certification according to ISO9001:2000 and ISO14001:2004 and is strongly committed to customer satisfaction.

Brightbest is commited to a point of reference for energy saving and environmental protection technologies in the frame of international directives.