Nov
High Quality DIN Ball Check Valve Produced by Qingdao Qingguan Valve Co., Ltd.
Nov
Congratulations to AWWA Soft Sealed Gate Valve Developed by the Company for its Successful Entry into the American Market
Qing Guan has launched a new line of heavy-duty slurry knife gate valves designed for high-pressure applications, mostly within the mining industry.
Through advanced products and process technology, our core business is to develop and produce valves, fire hydrants, and accessories for water and gas distribution, sewage treatment and fire protection. The Qingguan Valve is an international group and is created by the people’s efforts. Our basic strategy, such as innovation, keep our business simple, professional. Close […]
Jul
根据API 600、API 602、GB/T 12234的要求，闸阀是工业管道产品中使用最多的截止阀。适用于各类工业管道150~2500级。闸阀具有以下优点。 Big flow area, small fluid resistance; Simple construction, easy operation; A seat seal ring is replaceable welding or threaded seat; Seal surface can be surfacing 13 Cr, satellite, monel metal, etc, stand wear and tear and abrasion resistance; Low-pressure valve uses the bolted bonnet; the high-pressure gate valve uses the pressure […]
Jul
In this article, you will learn the different parts of valves. The valve is assembled product and consists of various parts. If you are working with valve, knowing of these parts is a must. Valve Body The valve body is the main pressure retaining part that also houses other valve parts, such as disk and […]
Jul
Introduction of valves A valve is a device that regulates, directs or controls the flow of a fluid by opening, closing, or partially obstructing various passageways. what valve functions: stopping and starting fluid flow. varying the amount of fluid flow. controlling the direction of the fluid flow. regulating the downstream system or process pressure. relieving […]
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