China Experienced Manufacturer Kmo 304 Worm Gear Ball Valves for Gas/Fuel Gas

Product Introduction

1. Body Material: WCB(more details please check the follow drawing)

2. Surface material: Carbon steel: epoxy resin 

3. Applicable medium:  gas

4. Diameter: DN50-400mm

5. Nominal Pressure: 1.6-25MPa

6. Design temperature:-29oC~ +121oC

7. Connection type: flange

8. Design Standard: GB/T12237-2007

9. Structure&Length Standard: GB/T12221-2005

   
   

1. Easy to operate: The ball is supported by the upper and lower bearings, reducing friction and eliminating the excessive torque caused by the huge sealing load formed by the inlet pressure pushing the ball and the sealing seat. Even under the highest operating pressure can achieve smaller torque.

2. Good sealing performance: a spring is provided at the tail end of the metal valve seat to ensure sufficient pretension. When the sealing surface wears out during use, the valve continues to ensure good sealing performance under the action of the spring.

3. Drainage pipeline: Sewage holes can be set at the top and the bottom of the valve body, which can exam if the valve is leakage or not.

1. The ball valve has been tested for various performances such as strength, sealing, and switching according to the "valve inspection and test" standard before leaving the factory, so as to meet the requirements of the standard,    and remove the oil and debris inside and outside the valve cavity. Both ends are sealed with caps.

2. Before installation, the user should check carefully whether the content of the nameplate is in accordance with the conditions of use. It is not allow to install and use the valve with over pressure and over temperature.

3. Before installation, KMO recommends that the caps at both ends of the inlet and outlet should be removed, and check carefully whether there is dirt adhering in the valve cavity. At the same time, checking whether the bolts, nuts and packing glands of the connection parts of the valve are loose. If they are loose, they should be tightened.

4. Connect the ball valve to the pipeline according to the designed connection method. After fixing, the valve should not withstand large tensile, compression, bending and twisting stresses to avoid damage to the valve.

5. The transmission mode of the ball valve includes manual, worm gear transmission, pneumatic, electric, hydraulic and other driving methods. Wrench (or handle) is used for manual operation. Pneumatic, electric, hydraulic, etc. are installed corresponding drive devices above the ball valve. Please refer to the drive device manual for specific matters.

6. The wrench (handle) can be turned 90° to open and close the ball valve. Turn the valve stem clockwise to close the valve and turn counterclockwise to open the valve.

7. For manual ball valves, the top of the valve stem has a groove indicating opening and closing, and the top of the ball valve also has a limit mechanism indicating the opening and closing state. When the wrench (handle) and the groove are in line with the pipeline, the ball valve is in the open state. Conversely, when the wrench (handle) and the groove are perpendicular to the pipeline, the ball valve is in the closed state.

8. The ball valve should be stored in a dry and ventilated place, and outdoor storage is not allowed. Channels at both ends are blocked with heads to prevent debris from entering.

9. During storage, the ball valve should be fully open to protect the ball sealing surface and the valve seat sealing surface.

10. If the ball valve is in a status of long-term storage,  it should be regularly checked to remove the dirt in the inner cavity and grease the processing surface.

11. If the ball valve is installed in the pipeline, it should be checked regularly to make sure everything is normal. If there is any problem, you need to repair it immediately. 

12. When the ball valve used is disassembled and reassembled, KMO reminds that it must be inspected and tested in strict accordance with the relevant national standards and issued with a certificate before it can be used again.

13. When there is medium pressure in the ball valve, it is strictly forbidden to replace or add packing, and it is strictly forbidden to disassemble any parts on the valve and loosen any strong parts, otherwise it may cause an accident.

14. The storage, use, maintenance and troubleshooting of valves shall be recorded in detail.

15. It is not allow to weld, maintain or place parts under the state of valve under pressure.

FAQ

Q: Are you manufacture or trading company? 
A: We are manufacture and our factory is in in Oubei Town, Yongjia County, Wenzhou City, Zhejiang Province.

Q: What is your products' MOQ?
A: 10pcs.

Q: Can you provide the sample for free?
A: Yes, we can provide the sample for free, but you need bear the delivery cost.

Q: If products have some quality problem, how would you deal with?
A: We will responsible for all the quality problems.

Q:If the product can be customized?
A: Yes, just let me know if you have any requirements, like applicable medium and size, etc.