Municipal Water Supply PN16 Cast 304 SS Flanged Hard Seal Triple Offset Butterfly Valve DN250

Product Features

In the actual operation of industrial process branch lines and medium-sized municipal pipeline networks, the media often exhibit both corrosive and abrasive properties—ordinary 304 soft-seal butterfly valves are prone to puncturing and aging when exposed to impurities, while carbon steel hard-seal butterfly valves lack sufficient corrosion resistance, making it difficult to balance long-term corrosion protection with wear and abrasion resistance. This flanged worm-gear-driven triple-eccentric butterfly valve features a valve body and disc constructed entirely of 304 stainless steel as a corrosion-resistant base material, with the seat sealing surface overlaid with high-hardness Stellite cobalt-based alloy. Precisely engineered to meet the PN16 nominal pressure and DN250 standard bore specifications, it provides a long-term fluid control solution for medium- and low-pressure applications that is “corrosion-resistant without rusting and wear-resistant without leakage.

Product Advantages

● he hard-seal pair structure, featuring Stellite alloy overlaid on the valve seat, differs from ordinary embedded seals. The sealing layer is metallurgically bonded to the 304 base material, ensuring it will not loosen or peel off even under long-term thermal cycling, significantly enhancing structural reliability.
● The valve features an integrated flanged body design, with both end flanges cast as a single piece from the same material as the valve body. This ensures high machining precision and excellent flatness at the end faces; when paired with sealing gaskets, the load is distributed evenly around the entire circumference, further ensuring reliable sealing performance.
● The valve employs a classic triple-eccentric three-dimensional rotary design. Through the triple misalignment of the shaft center, valve body center, and sealing cone angle, the sealing surface of the butterfly disc remains free from contact or scraping with the valve seat throughout the entire opening and closing rotation, making precise conical contact only at the instant of full closure.

Design Standards

Product detail

Application

Chemical and Petrochemical Industries,Power Generation, Water Treatment and Environmental Protection,Metallurgy and Shipbuilding.

About Us

Zhejiang Yugong Fluid Technology Co., Ltd. is a comprehensive high-tech enterprise integrating production and sales. The company manufactures and operates professional butterfly valves made of stainless steel, carbon steel, titanium and other materials. Founded in 2012, the company is located in Yongjiao Oubei, the "hometown of pumps and valves in China", covering an area of 4,000 square meters and has more than 80 employees. Aiming high and forging ahead, the company looks forward to working hand in hand with new partners and walking all the way!

Our Workshop

F&Q

Customer Service

1. Before signing an official contract with our customer we will help to analyze and provide professional solution based on customer project information and come out with optimum solution.
2. Your inquiry related to our products or price will be replied in 24hrs.
3. Keep informing our customer production process and help arrange quality checking in the factory if necessary.
4. one-year warranty toproducts.