How to select flanged soft sealed gate valves
In the Jinbin workshop, another batch of flange soft-sealed gate valves is ready for shipment, including concealed stem flange soft-sealed gate valve and exposed stem flange gate valve, with sizes of DN80 and DN100, and made of cast iron QT450. As pipeline engineering procurement and operation and maintenance personnel, choosing the right flange soft-sealed gate valve can not only eliminate leakage risks but also extend service life and reduce operation and maintenance costs. When purchasing, there is no need to blindly compare prices. Focus on the key points: matching working conditions, high-quality materials, standard manufacturing processes, and reliable after-sales service. Do not blindly pursue low prices. Only by balancing quality and cost performance can you select a reliable and durable flanged gate valve.
(picture：Non-Rising Stem Flange Soft-Sealing Gate Valve Dn100、Rising Stem Flange Soft-Sealing Gate Valve Dn80)
First, match the working condition parameters. Prioritize checking the pipe pressure and diameter. For general water supply and drainage and fire protection systems, 1.0/1.6 MPa is usually sufficient. However, in high-temperature and high-pressure scenarios, the pressure resistance level must be upgraded. At the same time, clearly identify the type of medium. Different sealing materials are suitable for clear water and sewage to prevent material corrosion and rapid aging.
Secondly, pay attention to the quality of the valve body and the seal. The water gate valve body should preferably be made of ductile iron, which is strong and resistant to deformation. Avoid thin-shell inferior castings. The soft seal is the core. It is recommended to choose EPDM or NBR integral molded sealing parts, which have good elasticity and strong sealing performance, can achieve zero leakage, and prevent dripping, leaking and seepage problems.
Furthermore, pay attention to the structure and craftsmanship. Prefer the concealed stem structure, which takes up less space and is less prone to dust accumulation and rust. The flange end face should be flat and free of defects, with precisely aligned bolt holes for easy on-site installation and connection. The seal gate valve stem should be smooth without any sticking, allowing for easy opening and closing, and it should not get stuck even after long-term use.
Finally, pay attention to qualifications and after-sales service. Ask for material reports and inspection certificates, and refuse products without any information. Prioritize manufacturers with complete after-sales service, clear quality guarantees, and quick responses. Any problems in the future can be solved promptly. Jinbin Valve has been producing high-quality valves for 20 years(Gate Valve Manufacturer), with quality guaranteed. If you have any related needs, please contact us below. You will receive a reply within 24 hours!
