cast iron Butterfly Valve wafer butterfly valve price butterfly valve
Casting method : Investment casting
Body material ductile iron, disc ductile iron, shaft to stainless steel.
Manual operation to BS 5155 and BS EN 593, double flanged, resilient seal and metal seated tight shut off design and of the eccentric disc type supported from two shafts placed in self lubricating bearing bushes.
Clockwise closing direction, angle 0 to 90 degrees, sealing ring made of EPDM rubber and will be attached to the disc by a retaining ring.
Equipped with an inversible and proportional worm gear operator, with open / close indicator, enclosure IP67.
Valves with a by-pass pipe or valve have a flow optimised double eccentric disc.
Hand wheel to fitted with a ball knob.
Fill material of valve shaft: As the pipe network of elastic valve seat seal is usually not open and close frequently, for filling in a few years of inactivity, the stuffing is not aging, long-term effects remain sealed.
Mode of operation of the elastic valve seat seal
Direction of open and close:should be clockwise.
1.This product ,ten year warranty.
2.we have certification of ISO,and according to the rules of ANSI,we can get the ANSI certification.
3.If the product function to describe any questions,call us anytime, we will have professionals to answer your questions.
4.Any products you want,our professional term and research staff will satisfied all your request .All the products can be customied.
our test for product
The installation environment, we simulate the real measurement on the pipeline under different pressure and medium environment, testing our valve working condition
Hebei Tongli automatic Control Valve manufacturing Co., Ltd.which was founded in 1995, . The company is a professional manufacturer engaged in the research, production, and sales, through development and innovation for 20 years, research, production and sales of professional committed to the valve.
The company has passed the certification of ISO9001:2000 quality system, the two time the license of special equipment, the people's Republic of China occupational health and safety management system certification,environmental management system certification.