In case of blowout and well-sealing is needed.high pressure oil coming from control system enters the bottom closing chamber from bottom inlet to push piston moving upward.
The movement of piston forces tubber core to move upward along the sphere surface, then supporting ribs get closer to push the internal rubber towards the wellhead center to fulfill the function of sealing drill equipment or the wellhead.
When unlocking the seal is needed,hydraulic oil pushes the piston moving downward and the rubber core will reset to its original under its elastic force.
Structure Characteristics
1.The connection between top cap and housing ,top and bottom ends adopt flanges and bolts.
2.Semisphere rubber core has many advantages,such as not easy folding back, big volume of rubber storage.Under the well pressure,the piston pushes the rubber core upward to form a funnel shape.The funnel effect of rubber core increaseas its sealing performance and life span.
3.Characteristics of the sealing structure
The BOP has three important sealing positions:piston external surface seal,piston internal surface seal and mud blocking ring seal.Radial direction cross section of the piston comes of the shape"Z",which makes the piston have short stroke length,low height and big diameter.
There are two wear-rings stick to the external surface of the piston and a wear-ring stick to the internal surface of the housing.The structure prevents metal to metal contact and protects piston and housing.
Shipping Timeframes: All orders are processed within 2-5 business days (excluding weekends and holidays). After your order has been processed, the estimated delivery time is before 14 Feb, 2025, depending on customs, Please note that due to high demand, some items may experience longer shipping times, which will be communicated at order confirmation email.
Order Processing Time: Please allow 2-5 business days for us to process your order before it is shipped . Orders placed after 16:00 on Fridays, or during weekends and public holidays, will begin processing on the next business day. Processing times may be extended during peak seasons or sales events.
Manufacturing Time: Some products needs manufacturing time, the manufacturing process will take approximately 10-30 business days depending on the product. This timeframe may vary depending on the complexity of the product and current demand. but this will be communicated with you during order confirmation.
Returns and Exchanges: We offer a 30-day return policy for most items. If you are not completely satisfied with your purchase, you may return it within 30 days of receipt for a refund or exchange. Items must be unused, in their original packaging, and accompanied by proof of purchase. Return shipping costs are the responsibility of the customer, unless the item was damaged or defective upon arrival.
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Afrimart Online stands as Africa's foremost e-commerce hub, featuring an expansive array of product categories spanning electronics, machinery, toys, furniture, and more. Committed to excellence, our platform delivers swift and streamlined logistics and customs clearance solutions, offering a comprehensive one-stop service for cross-border imports.
Leveraging over three decades of international trade expertise, we ensure a seamless and hassle-free importing experience, providing top-tier products at competitive prices to meet the diverse needs of African consumers.
At Afrimart, we strive to process all orders promptly. Once the payment has been successfully cleared into our account, your order will be processed within 2 to 5 business days. Please note that this processing time excludes weekends and public holidays.
Following the processing of your order, the estimated delivery lead time ranges between 35 to 60 days. However, please be aware that this timeframe is subject to variations due to potential delays in shipping and customs clearance. While we aim to adhere to the original delivery schedule, unforeseen circumstances may occasionally extend the delivery window beyond the anticipated 35 to 60 days.
In the event of high demand or other factors leading to longer shipping times for certain items, we will communicate any expected delays during the initial order confirmation. We appreciate your understanding and patience as we work to ensure your order arrives as swiftly as possible.