Nozzle flow rate: flow rate at different pressures (usually in liters per minute or gallons per minute).
Spray Angle: The spray Angle of the nozzle determines the spray coverage range, and the common angles are 30°, 60°, 90°, 120°, etc.
Working pressure: The nozzle design working pressure range is usually expressed in bar or pounds per square inch (psi).
Material: Common materials are stainless steel, plastic, ceramic, brass and so on.
Medium type: water, oil, chemical solvent or other liquid.
Interface type and size: Confirm the connection mode of the nozzle (threaded connection, quick connection, etc.) and the interface size (such as 1/4″, 1/2″), which needs to match the specifications of the system pipe.

Flow rate: the rated flow rate of the pump (unit: cubic meter/hour or liter/minute), which needs to match the filter flow rate.
Lift: the maximum lift of the pump (unit: m) to ensure that the delivery height and line loss required by the system can be met.
Power: The rated power of the pump (in watts or kilowatts), which must meet the power supply capacity.
Material: Select pump body material (such as cast iron, stainless steel, engineering plastics, etc.) according to the nature of the conveying medium.
Interface size: The connection size and type of the inlet and outlet must match the filter and pipe.
Medium characteristics: whether it can transport specific liquids (such as granular liquids, viscous liquids, corrosive liquids, etc.).
Driving mode: electric pump, pneumatic pump, diesel pump, etc., according to the actual power supply conditions.

Filtration capacity:
The maximum processing flow of the filter (in cubic meters per hour or gallons per minute), which needs to match the flow of the pump.
Filtration accuracy (such as micron grade), according to the actual filtration needs to choose the appropriate accuracy.
Interface size: Confirm the diameter of the inlet and outlet pipe (such as DN25, DN50, etc.) to ensure compatibility with the pipe system.
Working pressure and pressure resistance: the rated working pressure and maximum pressure resistance value of the filter (unit: bar or PASCAL), which must conform to the working pressure range of the system.
Material: Select filter material (such as stainless steel, PP, PVC, etc.) according to the chemical properties of the medium (such as acid and alkali, temperature).
Type of filter media: Identify the type of filter media to be used (e.g., filter element, filter bag, sand filter, activated carbon, etc.) and the convenience and cost of replacement.
Use environment: operating temperature range, and whether it is suitable for specific occasions (such as anti-corrosion, explosion-proof, etc.).

Ball valve specifications
Caliber size (DN or NPS) : Determine the diameter of the pipe to match the diameter of the valve.
Pressure rating (PN or Class) : such as PN16, PN25, or Class 150, Class 300, to ensure that the valve can withstand the pressure of the system.
Connection mode: threaded connection, flange connection, butt welding connection, socket welding connection, clamp connection.
Body material
Metal material: such as carbon steel, stainless steel, cast iron, brass, the choice needs to consider the corrosion and temperature requirements of the medium.
Non-metallic material: such as PVC, CPVC, PTFE (suitable for weak acid and base or environmental protection requirements).
Sealing material
PTFE (polytetrafluoroethylene) : chemical resistance.
NBR (nitrile rubber) : good oil resistance.
EPDM (ethylene propylene rubber) : suitable for water and steam.
Metal seal: Used in high temperature and pressure or wear environment.
Applicable media: liquid, gas, steam, corrosive chemicals, etc., to ensure that the material and seals of the ball valve adapt to the working medium.
Operating temperature: Different materials have a temperature upper limit. For example, stainless steel is suitable for high temperature and high pressure. PVC is only suitable for low temperature environment.
Flow requirements: Determine whether Full Bore or Reduced Bore ball valves are needed to affect flow and resistance.

Specification and size
Outer diameter, inner diameter, wall thickness: confirm whether it meets the requirements of use.
Length: Determine the single length or total length according to the actual demand.
Nominal diameter (DN) : Generally related to the standardized connection of piping systems.
Material
PVC (polyvinyl chloride) : used for drainage, wire and cable protection.
PE (polyethylene) : suitable for water supply, gas pipelines, etc.
PP (polypropylene) : mostly used in chemical corrosion resistant environments.
PPR (Type III polypropylene) : mainly used in domestic hot and cold water pipes.
Other materials (such as ABS, nylon) : select according to specific needs.
Pressure rating
Working pressure (PN value) : such as PN10, PN16, etc., depending on the working pressure of the pipeline. Ensure that the pressure resistance of the pipe meets the system requirements.
Temperature range
Requirements for use in high or low temperature environments.
Ensure that the temperature resistance of the plastic pipe matches the environment in which it is used.
Connection mode
Plug-in type: common in drainage pipes.
Threaded connection: Suitable for small pipes.
Welded connection: PPR pipe requires hot melt welding.
Flange connection: Suitable for large industrial pipes.
Use
Water supply: Drinking water piping must meet food grade hygiene standards.
Drainage: Usually low pressure and tightness requirements.
Cable protection: focus on impact and corrosion resistance.
Industrial pipes: Chemical resistance should be considered.

Pipe fitting type
Use: Is used for connection, change direction, branch, seal or other purposes (such as elbow, tee, flange, etc.).
Specific requirements: Whether special pipe fittings are needed, such as high temperature, corrosion resistance, pressure resistance, etc.
Material
Common materials are carbon steel, stainless steel, alloy steel, cast iron, PVC, PE, PP and so on.
The choice of material depends on the corrosiveness of the medium, pressure, temperature and the environment in which it is used.
Size
Nominal diameter (DN) : The size of the fitting should match the pipe.
Wall thickness (SCH or WT) : Select the appropriate wall thickness according to pressure and flow requirements.
Connection size: such as flange hole distance, thread size, socket diameter, etc.
Connection mode
Welding: butt welding, socket welding.
Thread: internal thread or external thread.
Flange: flat welding flange, butt welding flange, neck flange, etc.
Others: such as clamps, bonding, etc.
Pressure rating
Select the appropriate pressure rating according to the operating pressure of the system, such as PN (nominal pressure) or Class (pound class).
Medium characteristic
Fluid type: water, oil, gas, chemicals, etc.
Temperature range: operating temperature and limit temperature.