【Core Positioning】Specially designed for fresh water pipelines, made of cast steel with composite structure, integrating automatic fast exhaust and negative pressure protection. It solves pain points such as pipeline air resistance, water hammer and negative pressure damage, adapts to industrial and civil fresh water transportation, and is an essential component for pipeline safety operation and maintenance.
【Core Advantages】
1. Composite Double-Cavity Design, Automatic & Efficient Exhaust: No manual operation required. The large hole quickly discharges a large amount of air when filling water, and the small hole discharges a small amount of air during normal operation. The exhaust is thorough and responsive, with efficiency 5 times higher than traditional valves, ensuring full-pipe water transportation.
2. High-Quality Cast Steel, Durable & Corrosion-Resistant: Valve body and cover are made of WCB cast steel, through precision casting and heat treatment, with high tensile strength, wear resistance, vibration resistance and corrosion resistance. Float is SUS304 stainless steel, valve stem is ZH59 cast copper, plug is nitrile rubber (NBR), with excellent sealing performance without leakage, and service life is 30% longer than cast iron valves.
3. Flanged Connection, Strong Adaptability: Complying with GB/T 9113 standard, precise interface, easy installation and disassembly, suitable for DN25-DN400, 1.0MPa, widely used in municipal, industrial, high-rise building, farmland irrigation and other fresh water pipelines.
4. Intelligent Negative Pressure Protection: Automatically opens to suck air when negative pressure occurs in the pipeline, balances internal and external pressure, prevents pipeline vibration and rupture, no additional protection device needed, and protects pipeline safety in one stop.
5. Unpowered & Maintenance-Free: Linked by water flow pressure and float, no external power supply or manual on-duty required. The inner wall is anti-scaling, dust-proof and anti-clogging, only regular inspection is needed daily, greatly reducing operation and maintenance costs.
【Working Principle】Adopting float lever linkage structure, fully automatic operation: ① When filling water, the float falls, and the large hole opens to discharge a large amount of air; ② After full water, the float rises to close the large hole, and the precipitated air triggers the small hole to discharge a small amount of air; ③ When negative pressure occurs, the float falls, the large hole opens to suck air, and automatically resets after pressure recovery.
【Technical Parameters】Model: CARX-10C; Type: Compound Fast Automatic Exhaust Valve; Material: Valve Body/Cover (WCB Cast Steel), Float (SUS304), Valve Stem (ZH59 Cast Copper), Plug (NBR); Connection: Flange (GB/T 9113); Nominal Pressure: 1.0MPa; Applicable Medium: Fresh Water; Temperature: ≤80℃; Nominal Diameter: DN25-DN400; Exhaust Capacity: Increasing with specification (consult customer service for details); Executive Standard: CJ/T 217-2005, GB/T 13927.
【Applicable Scenarios】Municipal water supply, secondary water supply of high-rise buildings, industrial circulating fresh water, farmland irrigation, pump outlet, reservoir water transmission and other fresh water pipelines, especially suitable for positions where air is easy to accumulate such as pipeline high points and elbows, ensuring stable and efficient operation of pipelines.
【Product Guarantee】All products are qualified before leaving the factory through full-process quality inspection, supporting custom specifications and professional selection guidance, and perfect after-sales service (technical consultation, fault diagnosis), making purchase and use worry-free.