The ductile iron flanged ball valve is a two‑piece floating‑ball soft‑seated ball valve. Its valve body is made of high‑strength QT450‑10

ductile iron featuring excellent toughness, superior impact and vibration resistance compared with conventional grey cast iron bodies.

Internally and externally coated with blue epoxy resin, the valve delivers corrosion resistance and moisture tolerance, complying with

sanitary‑safety requirements for potable‑water service.

Internally fitted with a mirror‑polished 304 stainless steel ball for outstanding wear and scratch resistance, the valve adopts PTFE soft

seats to provide tight sealing and bubble‑tight shut‑off. Driven by a lever, it performs 90‑degree rotary opening‑and‑closing operations.

The full‑port straight‑through flow passage minimizes media pressure loss and prevents debris accumulation. An anti‑blow‑out safety

stem design improves reliability under high‑pressure working conditions. The top actuator mounting interface conforms to ISO 5211

standard. Worm‑gear, electric or pneumatic actuators can be mounted without modifying the valve body to realize remote automatic

control.

This valve is intended primarily for on‑off isolation service and is not suitable for long‑term throttling regulation. It is widely used in

non‑highly‑corrosive fluid pipelines including municipal water supply & drainage, fire‑protection piping networks, central air‑conditioning

HVAC systems, wastewater treatment and industrial circulating water systems. Nominal Pressure: PN16; Nominal Diameter: DN15‑DN200. Alternative seat materials such as EPDM and NBR are available upon request to adapt to different medium temperatures.

Five Core Advantages of Ductile Iron Flanged Ball Valve

1. Excellent Comprehensive Mechanical Properties of Valve Body

   The valve body is constructed of QT450‑10 ductile iron, featuring high toughness as well as good impact and vibration resistance,superiorto ordinary grey cast iron. Internal and external epoxy powder coating offers anti‑corrosion and anti‑rust performance. It satisfies sanitary‑safety requirements for potable‑water service and adapts to harsh conditions such as buried pipelines and pump outlets.
2. Tight Sealing with Bubble‑tight Shut‑off

   Fitted with mirror‑polished 304 stainless steel ball and PTFE soft seats, the valve provides excellent sealing performance at closed
   position and realizes bubble‑tight shut‑off, ensuring reliable isolation of pipeline media.
3. Fast On‑off Operation and Low Flow Resistance

   Full‑open and full‑close can be completed merely by 90‑degree rotation for labor‑saving manual operation. The full‑port straight‑through
   flow passage minimizes medium pressure loss, prevents debris accumulation and delivers high pipeline flow efficiency.
4. Standardized Interface for Easy Automation Upgrade

   The top actuator mounting interface complies with ISO 5211 international standard. Worm‑gear, electric or pneumatic actuators can be
   directly mounted without any modification to the valve body, allowing easy upgrade to remotely‑controlled automatic valves.
5. Wide Application Range and Convenient Installation & Maintenance

   With flanged connection design, the valve is easy for assembly, disassembly and inspection. Wearing parts including sealing seats can
   be replaced separately. It is suitable for multiple non‑highly‑corrosive media such as tap water, fire‑fighting water, HVAC circulating water, sewage and compressed air, with remarkable overall cost‑performance.