D81F and D81X stainless steel sanitary butterfly valves are equipped with standard electronic polishing, ensuring a smooth surface that is clean and free of media accumulation areas, without potential pollution. Quick disassembly and assembly of valves, making valve opening and maintenance quick and easy, reducing process downtime. Sanitary, automatic or manual operated butterfly valves are widely used in various fields such as beer, beverages, dairy products, fruit juice, pharmaceuticals, biotechnology, etc.
Item NO.:
XUVAL33-315Lead Time:
45 DaysProduct Orgin:
CHINABrand:
XUVALShipping Port:
ShanghaiPayment:
100%TTColor:
STEELMOQ:
10D81X stainless steel sanitary butterfly valve
Application scenarios
6. Soft eccentric butterfly valves are suitable for bi-directional opening and closing and adjustment of ventilation and dust removal pipelines, and are widely used in gas pipelines and waterways in metallurgical, light industry, power, petrochemical systems, etc.
operational principle
D81F and D81X stainless steel sanitary butterfly valves are a type of valve that opens and closes based on the rotation of the valve stem while driving the disc plate to rotate. In the cylindrical channel of the butterfly valve body, the disc shaped butterfly plate rotates around the axis, mainly rotating the disc plate 90 ° for flow control. When the disc plate reaches 90 °, the valve door is in a fully open state, and the angle of the disc plate can be changed to adjust the medium flow rate. It is generally installed in the diameter direction of the pipeline. Butterfly valves and valve stems themselves do not have locking capabilities. In order to effectively regulate flow, a worm gear reducer needs to be installed. Butterfly valves equipped with worm gear reducers not only have self-locking capabilities, but also can change the operational performance of the butterfly valve and more accurately regulate medium flow.
matters needing attention
1. During the operation of butterfly valves, it is necessary to periodically perform full open and full close operations to maintain the flexibility and lubrication of all valve components and avoid rusting.
2. When closing the butterfly valve, if it does not close tightly, you can first fully open the butterfly valve again, use the pressure of the fluid in the pipeline to flush and remove impurities from the inner wall of the valve body, and then close the valve again.
3. Try to filter out impurities in the pipeline as much as possible to prevent the sealing surface from being crushed when the butterfly valve is closed, causing the valve to be unable to fully close, resulting in leakage and potential safety hazards.
4. The opening status of the butterfly valve disc should be greater than 15 degrees;, That's because if the butterfly valve is in a state with a large throttling range, the back of the butterfly plate is prone to cavitation, and there is a risk of damage to the valve.
5. When the butterfly valve is in the middle opening position, the operating mechanism needs to be self-locking.
6. To prevent mechanical damage to the butterfly valve, do not allow sediment, chemicals, humid gases, and other substances in the air to corrode the valve and affect its quality.
7. The threads, bearings, gears, and other working interface components of butterfly valves should be lubricated regularly.
Construction and installation
1. After opening the butterfly valve packaging, it should not be stored in damp warehouses or outdoor areas, let alone on disorderly construction sites.
2. The connectors on the pipeline should be adjusted in advance during installation.
3. The fluid passing through the pipeline does not contain hard particles to avoid damaging the sealing surface.
4. During installation, the inner cavity and sealing surface of the pipeline should be cleaned.
5. The front end on the butterfly valve represents the direction of the medium.
6. When connecting valves to pipelines, it is required to use butterfly valve specific flanges.
7. Require the inner hole of the gasket (ring) to be the same size as the flange hole of the pipeline, ensuring that all the internal hexagonal screws on the butterfly valve end face are sealed to prevent flat leakage.
8. When electric and electro-hydraulic systems leave the factory, the opening and closing stroke of the control machinery has been adjusted. Before the user connects the power for the first time, they need to manually open the 45 degree position, then press the electric switch, and check that the direction of the indicator panel is consistent.
Installation precautions for butterfly valves:
① During installation, the valve disc should be stopped in the closed position.
② The opening position should be determined according to the rotation angle of the butterfly plate.
③ Butterfly valves with bypass valves should be opened before opening.
④ Installation should be carried out according to the manufacturer's installation instructions. For heavy butterfly valves, a solid foundation should be set up.
Common faults
1) Leakage at the filling
If the nut of the packing pressure plate is not tightened or tightened unevenly, the nut can be tightened appropriately. If further leakage is found, there may be insufficient filling material. At this time, the filling material can be reinstalled and then tightened again.
2) Leakage at the sealing of the valve body and disc plate
1. There is dirt sandwiched between the sealing surfaces, which can be cleaned thoroughly.
2. If there is damage to the sealing surface, re grind or re weld the valve body before processing and grinding.
3. The eccentric position is not suitable. Adjust the eccentric position to the appropriate position during installation.
Daily maintenance
1. The butterfly valve should be blocked at both ends of the diameter and stored in a dry and ventilated room. If stored for a long time, regular inspections should be conducted.
Before installation, the butterfly valve should be cleaned thoroughly to eliminate any defects caused during transportation.
3. During installation, the markings on the butterfly valve must be checked, and special attention should be paid to ensuring that the flow direction of the medium is consistent with the indicated flow direction on the butterfly valve.
4. For electric disc valves, it should be noted that the power supply voltage connected must be consistent with the electric device manual.
Previous :
D363H turbine butterfly valvenext :
D41W ventilation butterfly valveIf you are interested in our valves and want to know more details,please leave a message here,we will reply you as soon as we can.
Categories
New Products
Copyright © 2024 Tonglu Yongxin Valve Co.,Ltd.All Rights Reserved. Powered by dyyseo.com
IPv6 network supported