In case of pigging requirement, API 6D swing check valve can be manually operated to fix the opening position of valve clack, so as to achieve the pigging objective. Large check valves are designed with hydraulic damping cylinder to prevent the valve clack from bumping the valve seat, damaging the valve or causing pipeline vibration due to fast closing. Suitable for medium backflow prevention in pipeline or device SS+ graphite or metallic seal or pressure self-sealing is adopted between valve body and bonnet for reliable sealing. The sealing faces of valve seat and valve clack are build-up welded with hard alloy to improve the erosion resistance and extend the service life of valve.
#Bs 1868 swing check valve manual
The valve clack can be automatically opened and closed with the medium force, movement weight can be increased to facilitate fast closing of valve clack, hydraulic cylinder can be increased to facilitate slow closing of valve clack to prevent vibration of pipeline, and pigging can be performed through manual opening and locking the valve clack at the opening position.įor application in fields such as electric power industry, petroleum refining, petrochemical engineering, offshore oil, tap water engineering in urban construction, chemical engineering, etc.
196℃~593℃(the range of service temperature may vary for different materials) ZHEJIANG LONGGONG VALVE TECHNOLOGY CO.Technical parameters and characteristics: Product type We believe this cooperation will be a long- term relationship for our high quality, competitive price and good after-sale service.Ĩ How can I check your factory situation w hile it's difficult for me to come to China? No, we will build business with you with even 1PC. We are a factory specialized in manufacturing valves and ftting over 10 years.We have our own stainless steel foundry in Fujian province.ģ Do you have a minimum quantity of the products? ZHEJIANG LONGGONG VALVE TECHNOLOGY CO.,LTD Regarding the details, we can discuss if you want to know more about it. If possible, We can also send you the sample for checking. Shell wall thickness and general valve design Bolted Bonnet Pressure Seal Through Conduit BS/ISO 10434 (Gate valve) BS 1873 (Globe valve) API 600 BS 1868 (Check valve) ASME B 16. Then our quality inspectors will test products one by one to make sure every valve or ftting we sell is qualified and release the test mill certificate. Valve Trim Materials API 600 and BS 1873/1868 specify the following valve components as the valve trim: Items American Std. We have photos and videos on our website and facebook, It shows every step of the manufacturing.ĩ How can you guarantee the quality of products?įirstly, we have the numerical control device to manufacture products accurately. T/T 30% down payment, balance to be paid before shipment.Ĩ How can I check your factory situation w hile it's difficult for me to come to China? If we have the products in stock, it will be about one week. Yes, we can totally produce products according to your special request, even manufacture it base on your drawing. You can contact us for particular answer.
We believe this cooperation will be a long- term relationship for our high quality, competitive price and good after-sale service.Ĥ Are samples available to be sent with free?
And for now, our valves and fttings haveīeen exported to especially in North America, South America, South Asia, Europe and Middle East.ģ Do you have a minimum quantity of the products?
We hope to make business with companies from all over the world. We are a factory specialized in manufacturing valves and ftting over 10 years.We have our own stainless steel foundry in Fujian province.Īnd we have got ISO9001&TS certificate of Manufacturing and processing of valves and fttings.Ģ Where are the main markets for your products? Offshore /Oil /Gas /Chemical /Petrochemical Pulp /Paper /Water /Wastewater /Marine Material: WCB, WC6, WC9, LCB,CF8, CF3, CF8M, CF3M, CN7M, Monel and Hast.