Wafer type Worm drive cast iron turbine butterfly valve D371X-10/16 manual DN50 80 100 150 200 250

1、 Introduction to worm gear hard seal butterfly valve:

D343HThe butterfly plate of the butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc shaped butterfly plate rotates around the axis, with a rotation angle between 0 ° and 90 °. When the rotation reaches 90 °, the valve is fully open. Characteristics of new long-life stainless steel butterfly valve and problems existing in the use of butterfly valve At present, D343H butterfly valve, as a component used to realize on-off and flow control of Plumbing, has been widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower, etc. In the well-known butterfly valve technology, the sealing form mostly adopts a sealing structure, and the sealing materials are rubber, polytetrafluoroethylene, etc. Due to the limitations of structural characteristics, it is not suitable for industries such as high temperature resistance, high pressure resistance, corrosion resistance, and wear resistance. A relatively advanced butterfly valve is a triple eccentric metal hard seal butterfly valve, with the valve body and valve seat as interconnected components. The sealing surface of the valve seat is welded with heat-resistant and corrosion-resistant alloy materials. The multi-layer soft stacked sealing ring is fixed on the valve plate. Compared with traditional butterfly valves, this type of butterfly valve has the advantages of high temperature resistance, easy operation, no friction when opening and closing, and compensates for sealing with the increase of torque of the transmission mechanism when closing, improving the sealing performance of the butterfly valve and extending its service life

2、 Features of worm gear transmission hard sealed butterfly valves

1. This valve adopts a three eccentric sealing structure, with almost no wear on the valve seat and butterfly plate, and has a sealing function that becomes tighter and tighter.

2. The sealing ring is made of stainless steel, which has the dual advantages of metal hard sealing and elastic sealing. It has excellent sealing performance, corrosion resistance, and long service life, regardless of low or high temperature conditions.

3. The sealing surface of the disc plate is made of cobalt based hard alloy, which is wear-resistant and has a long service life

4. The large-sized butterfly plate adopts a quilted frame structure, with high strength, large flow area, and small flow resistance.

5. This valve has a bidirectional sealing function, which is not limited by the flow direction of the medium or affected by spatial location during installation. It can be installed in any direction.

6. The drive device can be installed in multiple workstations (rotating 90 ° or 180 °), making it easy for users to use.

3、 Technical parameters of worm gear transmission hard sealed butterfly valve:

4、 Main component materials of worm gear transmission hard sealed butterfly valve:

D43H and D343H PN10~PN40 metal hard seal butterfly valvesAdopting a precise J-shaped elastic sealing ring and a three eccentric multi-level metal hard sealing structure, it is widely used in industrial pipelines such as metallurgy, power, petrochemical, water supply and drainage, and municipal construction where the medium temperature is ≤ 425 ℃, for regulating flow and carrying fluid.

Service Commitment Letter


Xinxiang Yugong Environmental Protection Equipment Co., Ltd. regards quality and reputation as its life, always adheres to the business philosophy of "creating with heart and establishing business in the market", and aims to meet the needs of customers. We hereby make the following commitments to you:
1. Product quality assurance period: The quality assurance period of our company's water treatment series (including fully automatic self-cleaning filters) is 12 months from the date of equipment delivery and normal operation.
2. The main components of the water treatment equipment provided to you are guaranteed to have brand new materials, excellent quality, and qualified products after inspection.
3. Our company guarantees that the technical materials delivered are complete, correct, and clear, fully meeting the installation and meeting the technical requirements of Party A.
After the appraisal of the order contract takes effect, the subject matter of the contract can be transported to the designated location of the other party at the time specified in the contract, and is responsible for providing free on-site installation and debugging guidance as well as training for operators.
5. We provide you with 12 months of free product repair and replacement services (excluding consumables), and provide you with lifelong technical support. Our company guarantees to provide the consumable parts (brushes and stainless steel filters) of the product at cost price for a long time.
6. After receiving your opinions and requirements, our company guarantees to provide a written response within 8 hours. If required by Party A, experienced engineering and technical personnel will be sent to the owner's site within 24 hours to analyze and guide maintenance.
Emergency repair: During the warranty period (12 months), if the water treatment equipment malfunctions, Xinliang after-sales service engineers will immediately rush to the site within 24 hours for troubleshooting and module replacement. Even after the warranty period expires, Xinliang's after-sales service engineers will immediately rush to the site to repair the equipment. After the repair is completed, only the parts fee will be charged through consultation between both parties