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Choosing the right water valve type depends on the application needs, including: primary function (on/off, throttling, backflow prevention), required flow rate (full port valves have low resistance), operating pressure and temperature, fluid type (clean water, wastewater, chemicals), frequency of operation, space constraints, and cost.
The key distinction lies in graphite morphology: cast iron pipe has flake graphite, making it brittle, while ductile iron pipe forms nodular graphite via magnesium/cerium addition, combining corrosion resistance with steel-like strength and ductility.In performance, ductile iron pipe excels with higher strength, toughness, lighter weight, and superior pressure/impact resistance, enabling easier installation; cast iron pipe is stiff, brittle, and heavy, prone to fracture.Consequently, applications diverge: ductile iron dominates pressurized systems (e.g., water/gas mains); cast iron is relegated to drainage or noise-sensitive niches.
Flange is a "Connector": Used to permanently connect pipes and equipment; it is the foundation for building the system.
Dismantling Joint is a "Maintenance Component": Used to facilitate the disassembly of specific equipment; it is an assistant for system maintenance. With its unique telescopic structure and limit bolt design, it allows you to create space for equipment removal by loosening only a few nuts, avoiding the hassle of removing numerous flange bolts or cutting pipes.
Pipe Fittings are fundamental connectors that construct the physical pathway of a piping system. They directly handle changes in flow direction (e.g., elbows), pipe diameter adjustments (e.g., reducers), flow splitting/merging (e.g., tees), or flow termination (e.g., caps). Their core role is to define and connect the routing and structure of the pipeline network.
Pipe Accessories are components that extend functionality, enable control, and provide protection for the system. They regulate flow (valves), bear weight (supports/hangers), ensure sealing (flanges), purify fluids (strainers), monitor parameters (instruments), etc., with the core purpose of enhancing the system's safety, controllability, and operational efficiency.
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