Ball valve selection method

Ball valve works by rotating the ball to make the valve clear or blocked. Ball valve switch is light, small size, can be made of large diameter, reliable sealing, simple structure, easy maintenance, sealing surface and the spherical surface is often closed, easy to be media erosion, widely used in various industries. Ball valve can be roughly divided into 19 categories, there are floating ball valve, fixed ball valve, metal seal ball valve, V-type ball valve, wafer type ball valve, ball valve insulation, pipeline ball valve, ball valve, Three-way (Stone) ball valve, threaded ball valve, integral ball valve, low temperature ball valve, bellows ball valve, eccentric hemisphere valve, all-welded ball valve, special ball valve. O-type ball valve with floating structure, the core is precision castings, hard chrome plated appearance, the seat metal or reinforced PTFE material, the flow channel mouth and pipe the same caliber, great flow capacity, flow resistance is extremely small, off When no leakage, the general do switch valve use, especially for high viscosity, fiber, granular media. V-type ball valve with a fixed structure, the core opened with a V-shaped incision, proportional control can be achieved, the flow rate characteristics for the approximate percentage. Ball valve wide range of applications, ball valve can be applied to: 1, nominal diameter from 8mm to 1200mm. 2, the nominal pressure from the vacuum to 42MPa. 3, the working temperature from -204 ℃ ~ 815 ℃. Especially in the petroleum, chemical, metallurgical and other departments, the use of soft sealing ball valve in flammable, explosive media equipment and piping systems, but should pay attention to fire and fire. Normally, the sealing performance is strictly controlled at two positions, the mud, wear and contraction channels, rapid opening and closing movements (1/4 turn on and off), high pressure cutoff (large pressure drop), low noise, cavitation and gasification, A small amount of leakage to the atmosphere, the operating torque is small, the fluid resistance of small pipe systems, the recommended use of the ball valve. Ball valve is also suitable for light structure, low pressure cutoff (small pressure difference), corrosive medium piping system. Ball valves are also available in cryogenic (cryogenic) systems and piping systems. When required to have regulatory performance, the need to use a special structure with a V-shaped opening ball valve. In petroleum, petrochemical, chemical, electric power, urban construction, the working temperature above 200 ℃ piping system can choose metal to metal sealed ball valve. Oxygen piping systems in the metallurgical industry require the use of carefully degreased ball valves. In the oil pipeline and gas pipeline in the main line to be buried in the ground, you need to use full-bore welded ball valve. Ball valve is widely used in irrigation systems, mainly used in the branch pipe imports. Ball valve structure is simple, small size, resistance to water flow is also small, the disadvantage is that open or close too fast, will produce water hammer in the pipe (water pipe pressure suddenly changes in the pressure will rise). Therefore, the main pipe should not be used on the ball valve can be used in the dry, branch or on the end for flushing purposes, flushing sewage effect.

High Power Led Grow Light

Philizon focus on Greenhouse High Power LED Grow Lights and Full Spectrum LED Grow Lights Manufacturer China,Produce The Best Yields, Run More Efficiently, Use Half The Electricity Of Double Ended HPS.

LED grow lights are the most recent mass produced lamp on the market,although many people have not begun using them yet. Since the tiny LEDs might not be the first thing that you think of when you picture an indoor grow up,that is understandable.In reality,however, they truly are some of the most powerful,effective,and space saving grow lights that you are going to come across throughout your growing career.

Advantages

Plug with listed certificate safe to use.

Full Spectrum High Power LED Grow Light and High PAR for Plants growth.

Product Images

The Plug you can choose

Ageing Test

Application

Our professional High Power LED grow light are suitable for all the indoor plants and good for seeding, growth,flowering and fruiting stages of plants, increasing the harvest and Saving energy.

Package

Quality Control Systems

Warnings:

1.lndoor use only.

2.To avoid being damaged,do not use water or drip irrigation while using.

3.Sunshine lighting time should be 12-18 hours.

4.While irradiating the plants,the height of led grow lamp is not less than 10 inches,low height will cause the destruction of plants.

5.Highly hang the lamp will weaken the energy and affect the growth cycle of the plants, so the lamp should not be hung too high.

6.While taking care of the plants, please spray the leaves and branches 2-3 times everyday,to ensure the the plants do not wrinkle a wither, and have no phenomenon of few fruit, and hard pericarp.

Trade Terms

Payment: T/T, L/C, Paypal, 30% deposits before production, 70% balance to be paid before deliverying(Western Union are welcome)

Sample will be delivered within 7 working days.

Discounts are offered based on order quanlityes.

MOQ:sample order are acceptable

Delivery ways:DHL,UPS,FedEx,TNT, door to door,by sea,by air,etc.

New Design Grow Light,High Power Grow Light,High Power Grow Lamp,Led High Power Grow Light

Shenzhen Phlizon Technology Co.,Ltd. , https://www.szledplantgrowlights.com