Ductile Iron Wafer Butterfly Valve for Water and Gas Pipelines

Ductile Iron Wafer Butterfly Valve Commonly Used In Fluid Pipeline Systems

   This is a manual clamp-type butterfly valve, which is a key device for regulating and controlling the on and off of fluids (water, gas, liquid, etc.) in industrial pipelines. The disassembly structure and functional logic are as follows:

Core components & functions

Valve body (blue part):
Mostly made of ductile iron/cast steel, it is high in strength and impact-resistant, suitable for clamp installation (bolts are used to penetrate the pipe flange and clamp the valve body to fix it), saving space and flexible installation. It is commonly used in water supply and drainage, HVAC, fire protection and other systems.

The internal black rubber is the valve seat seal, which cooperates with the valve plate to block fluid leakage when closed and ensure sealing (rubber can be EPDM, nitrile, etc., suitable for different media).

Valve plate (silver disc in the middle):
The core of the pipeline "switch", rotating around the central axis (0°-90°) to control the on and off/flow of the fluid. The surface may be treated with anti-corrosion (such as stainless steel, spray coating) to cope with complex working conditions such as acid, alkali, and high temperature.

Actuator (black + yellow part):
Manual drive: The yellow turntable/handle is a manual operating part. When it rotates, it drives the valve plate to rotate through the gear/worm gear to achieve "open/close/adjustment". It is simple and reliable and suitable for scenarios that do not require automation.

The black shell is the transmission structure shell, with built-in gears, bearings, etc. to ensure smooth operation, stable torque, and avoid valve plate jamming.

Application & Advantages

Scenario: Due to its compact structure, small flow resistance and low cost, it is widely used in municipal water supply and drainage, building HVAC, fire sprinkler and other systems - such as community water supply flow adjustment, shopping mall air conditioning water system switch, and emergency cut-off of fire pipes.

Advantages: Manual operation does not require electricity/gas source, and maintenance is simple; clamp installation is suitable for narrow space; rubber soft seal is suitable for low-pressure, normal temperature (or medium temperature) clean media, with good sealing and low noise.

Materials of main parts

Who we are

SND has been producing and selling metal goods for about 20 years.By using manufacturing techniques including sand casting, lost wax casting, lost foam casting, and precision machining, the company has been supplying goods made of materials like cast iron, steel, stainless steel, aluminum, etc. Additionally offered are surface finishing and assembly services.

Our company has successfully created products in a variety of industries, including automotive, rail transportation, agricultural machinery, chemical, energy, electricity, water, air compressor, and construction, thanks to our consistent efforts over the past few years.

Our factories' ISO9001-accredited quality control systems guarantee a consistent and dependable quality for each and every component.
Spectrometer, ultrasonic, magnetic, permeability, elongation, tensile/yield strength, and other inspections are carried out as part of routine production procedures.