Q:G what's the meaning of the valve?

G is the diaphragm valve, valve type code, there are other types of valve code.A D is a safety valve, butterfly valve, check valve (H valve), J is the cut-off valve, throttle valve is L, P is Q is the drain valve, ball valve, S trap, U X is a plunger valve, plug valve, Y valve, Z valve.

Q:What are the types of valves?

1.2.3 classification by body materialx09 (1) non-metallic material valves: such as ceramic valves, glass fiber reinforced plastic valves, plastic valvesx09 (2) metal valves: such as copper alloy valves, Aluminum Alloy valves, lead alloy valves, titanium valves, Monel alloy valves, cast iron valves, carbon steel valves, cast steel valves, low-alloy steel valves, high alloy steel valves.x09 (3) metal body lining valve: such as lining lead valve, lining plastic valve and lining enamel valveHa ha, I answered it only a while ago

Q:What's the sewage treatment valve with?

Sewage treatment system valve requirements are not high, the use of butterfly valve is one of the most cost-effective.

Q:What are the technical requirements of valves, such as "Z15W-25T"?

The first Z represents the gate valve;The second bit is omitted, indicating the handle or handwheel;Third bit 1, indicating internal thread connection;Fourth bit 5, indicating dark wedge rigid single gate;Fifth W, which means the sealing materials are the main body material of the valve;The second paragraphThe first 25, said the nominal pressure is 2.5MPa (valve used in accordance with the pressure level of GB/ 1048, the use of GB/T 1048 standard 10 times the unit of MPa (MPa) value, otherwise the unit value is MPa. If it is a power station valve, the unit value is MPa.)Second bit T indicating copper and copper alloy for the valve body.

Q:Who knows which kind of water valve is good?

Classification of domestic valves:pipeline valveBathroom valves, kitchen valves, etc faucetsPipeline valve is generally sealed with rubber valve is better, rubber sealed valve sealing performance is very good and durable;Bathroom valves, kitchen valves and other faucets will use copper into the Dian valve, copper valve is not rusty, durable. ,Hope to help you.

Q:Is the valve galvanized?

Butterfly valve gate, some hot-dip galvanized, and other valves are not.

Q:What are the advantages and disadvantages of this method? Are there any other ways to adjust the flow rate?

With the advantages of the pump outlet valve adjustment, 1, you can control the pump outlet pressure, 2, you can control the motor current is not more than the process conditions, 3, control motor power, to ensure the normal operation of the pump.

Q:Which valve can play a good regulatory role?

A wide range of valves, the function is different, although like conventional butterfly valve, ball valve can play a regulatory role, but their role is not linear, so if you need to adjust the precision of the valve, it is best to select the control valve.

Q:How can the material be checked by valve approach? What experiments do you need?

May refer to the valve pressure test principle and the pressure test matters needing attention.(1) in general, the valve shall not be subject to strength test, but the body and bonnet shall be subjected to strength tests after the repair of the valve body and bonnet or corrosion damage. For the relief valve, the constant pressure and seat return pressure and other tests shall be in accordance with the specifications and the relevant regulations.(2) the installation of the valve should be done for strength and tightness test. Low pressure valve sampling 20%, if not qualified should be 100% of the inspection; medium and high pressure valve should be 100% of the inspection.(3) the installation position of the valve shall be in the direction of easy inspection during the test.(4) welding connection valve, not with blind plate pressure test can be used when the cone seal or O ring seal pressure test.(5) when hydraulic test, the valve air will be excluded as much as possible.(6) the pressure should be increased gradually during the test, and the pressure will not be sudden and sudden.(7) strength test and sealed test duration is generally 2~3min, important and special valves should last 5min. Small caliber valve test time can be a little shorter, large caliber valve test time can be longer. During the test, the test time can be extended if in doubt. Strength test, does not allow the body and bonnet sweating or leakage. Sealing test, the general rotor valve only once, the safety valve, high pressure valve and other raw valve to be carried out two times. When testing for the low pressure, large diameter valve is not important and there are provisions to allow leakage of the valve, allowing a small amount of leakage; the common valve, power station valve, marine valves and other valve requirements vary on leakage requirements according to relevant regulations.

Q:Yongde jiekelong valves and valves of the good faith

If I choose, I choose Amico...After all, Amico did 20 years of copper valves...Moreover, the valve of this brand, Amico more people know...Jake, Amico has been imitated, even the same type..Of course more than jiekelong imitate slightly, there are other more or less imitation point valve...But I wonder if you use a big valve or a small valve?,If it's a small valve, use Amico..Big valve, these two are expensive outrageous...You can discuss it when you have time...