What valves are needed on the construction site?
Depends on the actual size of the required diameter, how much work pressure, and then choose the right valve. Commonly used PVC, cast aluminum, cast iron; PVC cheap, commonly used in small diameter pipe, cast aluminum, cast iron is relatively expensive, high pressure.
Order valves1, according to the use of place, use, and understand the relevant laws and regulations, specifications, standards, policies, approval may be used after the selection of valves suitable for various requirements;2, confirm the working conditions of valve, applicable medium, working pressure and medium temperature;3, determine the nominal diameter corresponding to the pipe: DN (mm), NPT, NPS (");4, determine the way to connect with the pipe: flange type, internal (external) thread type, welding type, clamp type, clamp type, card sleeve type, etc.;5, determine the valve operation mode of driving: manual, worm gear drive, pneumatic, electric, hydraulic, electromagnetic, electro hydraulic, etc.;6, confirm the types of valves: gate valve, globe valve, throttle valve, plunger valve, ball valve, butterfly valve, diaphragm valve, plug valve, check valve, safety valve, drain valve, pressure reducing valve and other special valves;7, determine the use of valves: switching type, adjustment type, safety type and so on;8, determine the valve shell and internal parts of the material: carbon steel, alloy steel, stainless steel, ductile iron, gray cast iron, copper alloy, aluminum alloy, plastic and so on;9, determine the valve sealing performance requirements, sealing level or sealing leakage;10, determine the valve coating requirements, packaging requirements, transportation requirements;11, special needs of the valve should also be determined: structure length, valve height, appearance size, flow resistance, emission capacity, flow characteristics, protection level, explosion-proof performance and other parameters;12, determine the valve installation position and posture.
What he wants to ask is what valve is neededFrom the beginning of the floating ball valve tap water tank, water in front of the gate valve, the soft joint water slurry valve, check valve pipe pressure relief valve to prevent a full set of facilities, water hammer pipe return water pressure high absorb fire safety valve, proportional valve etc.These are the most basic
Order valve flow1, customers have special requirements for products, must provide the following instructions in the contract: a) b) the length of the structure connection form C) nominal diameter, full size, shrinkage, pipe size d) using medium and temperature and pressure range E) test, inspection standards and other requirements.2, the factory can be configured according to customer specific requirements of various driving devices.3. If the customer provides the type and model of the valve to be determined, the customer shall correctly explain the meaning and requirements of the model and sign the contract on the condition that both the supply and demand sides agree.4, futures, order customers, please call the letter in detail to tell you the required valve model, specifications, quantity and delivery time, location, factory information, billing information, delivery address. And in accordance with the total amount of 20% of the predetermined amount or full amount of money, timely import our factory account, and the rest of the payment before shipment, import, in order to arrange delivery in time.
