Three eccentric multi-level metal hard seal butterfly valve series products, is a long life, energy-saving butterfly valve. Its structure adopts the three-dimensional core principle design, the valve seat adopts the multi-level structure of hard and soft sealing compatibility, advanced technology and exquisite processing. This product is composed of valve body, butterfly plate, multi-level valve seat, valve rod, transmission mechanism and other main components.

Three eccentric multi-layer metal hard seal butterfly appendix is widely used in metallurgy, electric power, petrochemical, air, gas, water supply and drainage pipelines with medium temperature ≤ 650 ℃ for regulating flow and cutting off fluid. Its sealing performance is reliable, which is the extension and development direction of universal butterfly valve to medium pressure and medium high temperature fields.

Because the design of this product is based on the principle of three-dimensional eccentricity, the space movement track of the sealing surface is idealized, and there is no friction and interference between the sealing surfaces. In addition, the optimized configuration of sealing materials ensures the sealing performance, corrosion resistance, high temperature resistance and wear resistance of the butterfly valve.
Its main features are as follows: 1. Small opening torque, convenient display and energy saving. 2. The three-dimensional braided core structure makes the butterfly root closer and tighter, and its sealing performance is reliable and there is no leakage. 3. High pressure resistance, corrosion resistance, wear resistance, long service life, etc.

Nominal diameter	DN(mm)	50-2000				50-500
Nominal pressure	PN(MPa)	0.6	1.0	1.6	2.5	4.0
Test pressurePs(MPa)	strength test	0.9	1.5	2.4	3.75	6.0
	Sealing test	0.66	1.1	1.76	2.75	4.4
	Airtight seal test	0.6	0.6	0.6	0.6	0.6
Leakage rate	Conform to the standard of conform GB / t13927
	Carbon steel: - 29 ℃ ~ 425 ℃ stainless steel: - 40 ℃ ~ 600 ℃
Applicable media	Air, water, steam, gas, oil and acid, alkali, salt with weak corrosive medium
Driving form

 

Design and manufacture	Flange connection	Structural length	Test and inspection
GB/T 12238	GB/T9113.1  GB/T9113.2  GB/T 9115.1  GB/T 9115.2  HG20592	GB/T 12221	GB/T 13927

 

 

Nominal diameter	DN(mm)	50-2000				50-500
Nominal pressure	PN(MPa)	0.6	1.0	1.6	2.5	4.0
Test pressurePs(MPa)	strength test	0.9	1.5	2.4	3.75	6.0
	Sealing test	0.66	1.1	1.76	2.75	4.4
	Airtight seal test	0.6	0.6	0.6	0.6	0.6
Leakage rate	<0.1 x DNmm3/s(in accordance with conform GB / t13927 standard)
Applicable temperature	Carbon steel: - 29 ℃ ~ 425 ℃ stainless steel: - 40 ℃ ~ 600 ℃
Applicable media	Air, water, steam, gas, oil and acid, alkali, salt with weak corrosive medium
Driving form	Worm gear drive, pneumatic drive, electric drive, hydraulic drive