Worm Gear Flanged Butterfly Valve

# Polished‑Up Commercial‑Grade Description (SEO‑Friendly & De‑AI‑Styled) Built with raised‑face (RF) flange connections, this electric wafer butterfly valve features a tough QT500‑7 nodular cast‑iron body and an EPDM‑bonded valve disc. Equipped with an electric actuator, the unit carries out automated cut‑off and flow regulation. It is widely installed for municipal potable‑water transmission, sewage drainage, fire‑fighting pipelines and HVAC circulating‑water systems. The integrated one‑piece body is cast from high‑strength QT500‑7 ductile iron. Food‑grade epoxy anti‑corrosion coating covers its inner and outer metal surfaces. The vulcanised EPDM liner firmly sticks onto the disc and achieves reliable bidirectional sealing with zero medium leakage. Standard bolt‑on RF flanges facilitate stable pipe connection and straightforward removal for maintenance. Its actuator casing is made of lightweight aluminium alloy. Operators can choose simple on‑off control or 4‑20 mA analogue modulating control for precise flow tuning. Available power‑supply options include AC220 V, AC380 V and DC24 V. This valve suits clean tap‑water, domestic sewage and non‑corrosive water‑based media. Its acceptable operating temperature ranges from −10℃ to 80℃, and standard nominal pressure grades are PN10 and PN16. If you require, I can further sort out its FAQ‑style English material for your product‑display webpage.

### Optimized Commercial‑Version Text (suitable for overseas product brochure & quotation document, natural non‑AI wording) Every valve unit is firstly sealed with transparent plastic film to keep out dust and moisture‑induced damage. Full pearl‑cotton and foam wrapping is then applied for shock‑absorption against vibration and jolts during transit. All export shipments are packed in non‑fumigated wooden cases that meet international shipping standards. Custom‑fit inner padding protects the valves from collision and shaking throughout road‑haul, sea freight and air‑transport links. Every wooden crate sits on an integrated pallet base, compatible with forklifts and manual pallet jacks. This greatly simplifies bulk‑goods handling and warehouse stacking operations. Our multi‑layered packaging safeguards the complete valve assembly, with special care taken for precision‑critical sealing parts. It prevents component deformation and seal damage during transport and storage. Such packaging design is well‑suited for long‑distance, multi‑leg logistics of industrial‑grade valves.

Headquartered in Wu'an Industrial Park, Hebei Province, SND is a sophisticated and modern valve manufacturer specializing in fluid control equipment. The company operates as a fully integrated enterprise, covering independent R&D, standardized streamlined production, global sales distribution and dedicated after-sales service systems. Boasting over two decades of in-depth industry expertise in fluid control solutions, SND delivers premium-grade valve products and customized fluid management systems for diverse industrial fields, including petrochemical engineering, power generation, municipal water infrastructure, metallurgy, marine engineering, pharmaceutical production and food processing industries.

Our comprehensive product portfolio encompasses a full range of valve categories, including ball valves, gate valves, globe valves, butterfly valves, check valves and control regulating valves, with customized special-purpose valves available to meet unique project requirements. We offer valve components manufactured from diverse materials such as cast iron, cast steel, stainless steel and alloy steel, which are engineered to adapt to harsh operating scenarios that demand high temperature tolerance, pressure resistance, corrosion resistance and wear resistance. To sustain stable product performance and consistent batch quality, we adopt professional CAD and CAE digital design technologies, combined with high-precision CNC machining facilities, achieving precise dimensional control and reliable product quality for every finished valve.