Implementation Standards

1. Design and manufacturing: JB/T12796-2016 SL498-2010; SD316-89;

2. Inspection and testing: GB/T13927-2005;

3. Flange connection: GB/T9113-2007;

4. Structural length: GB/T12221-2007;

The conical valve can be roughly divided into several parts, such as the buried pipe (or transition pipe), conical valve body, sleeve, actuator, pull rod and transmission mechanism.

The valve body is fixed, and the actuator opens and closes the outer sleeve through the transmission mechanism to achieve the opening and closing of the valve body. It has the following advantages:

1. Good hydraulic conditions, with a higher flow coefficient u=0.75~0.83 or higher than other valves;

2. Simple structure and light weight; all transmission parts are set outside the valve body, which is clear at a glance and easy to maintain and repair;

3. Small opening and closing force, easy operation, suitable for small and medium-sized water conservancy projects without power supply, can be set up with electric, gas, and hydraulic operation opening and closing mechanisms, and easily realize remote control or unattended automatic operation;

4. When discharging, the water tongue is horn-shaped, diffused and aerated in the air, with good energy dissipation effect, simple energy dissipation pool or no energy dissipation measures. If it is set as a submerged outflow, the underwater energy dissipation is also very simple;

5. The fluid is evenly divided by the internal 4 guide wings, and no vortex will be generated;

Valve body material: ductile iron, carbon steel, stainless steel

Nominal pressure PN: 0.6～4.0MPa

Nominal diameter DN: 200～2000mm

Strength test: PN×1.5

Seal test: PN×1.1

Operating temperature T: 0～70℃

Connection form: flange, welding

Applicable media: water, sewage

Operating mechanism: worm gear, electric, hydraulic, pneumatic