Home Product Butterfly Valve Series

Product Classification

Control Valve Series Ball Valve Series Butterfly Valve Series Gate Valve Series Globe Valve Series Check Valve Series Water Control Valve Series Filter Series Steam Trap Series

Three-segment Eccentric Butterfly Valve (Pneumatic)

Technical Specifications

Pressure range: PN10 - PN160 CLASS150Lb ~ 1500Lb
Nominal diameter: DN 50 - DN 3000 NPS 2" - 120"
Main materials: carbon steel, stainless steel, duplex stainless steel, alloy steel, nickel alloy steel
Connection type: Clamp type
Working temperature: -29℃ to 350℃
Operation method: Pneumatic device
Design standards: GB/T12238, JB/T8527, API 609

Sales Hotline：

0086-21-59110018

Product Details

Product structural characteristics

The three eccentric butterfly valve changes the positive cone angle to a slanted cone angle. This reduces the eccentricity between the valve stem and the valve body center, and consequently reduces the opening torque. It is widely used in industrial pipelines such as metallurgy, power, petrochemicals, water supply and drainage, and municipal construction, for regulating flow and controlling fluid.

Its main structural features are

1. The butterfly plate and the sealing surface have no friction during opening and closing, and it is a forced seal.
2. Can be installed at any position;
3. Zero-leakage structural design;
4. You can choose between metal and non-metal, as well as metal and metal sealing methods.
5. Customers can choose from one-way valves and two-way valves.
6. Optional dynamic load type packing;
7. Optional low-leakage packing to meet the requirements of ISO 15848;
8. The valve stem can be designed to be longer.
9. We can design low-temperature valves or ultra-low temperature valves according to customer requirements.

Main connection dimensions

DN	Main dimensions			Flange dimensions and bolt specifications
	Main dimensions			1.0MPa		1.6MPa		2.5MPa
	L	H	H1	D1	4-ФM	D1	4-ФM	D1	4-ФM
50	43	350	112	125	Ф18	125	Ф18	125	Ф18
65	46	370	115	145	Ф18	145	Ф18	145	Ф18
80	49	380	120	160	Ф18	160	Ф18	160	Ф18
100	56	420	138	180	Ф18	180	Ф18	190	Ф23
125	64	460	164	210	Ф18	210	Ф18	220	Ф27
150	70	555	175	240	Ф23	240	Ф23	250	Ф27
200	71	605	208	295	M20	295	M20	310	M24
250	76	680	243	350	M20	355	M24	370	M27
300	83	800	283	400	M20	410	M24	430	M27
350	92	835	310	460	M20	470	M24	490	M30
400	102	915	340	515	M24	525	M27	550	M33
450	114	960	380	565	M24	585	M27	600	M33
500	127	1020	410	620	M24	650	M30	660	M33
600	154	1225	470	725	M27	770	M33	770	M36
700	165	1355	550	840	M27	840	M33	875	M39
800	190	1470	640	950	M30	950	M36	990	M45
900	203	1545	710	1050	M30	1050	M36	1090	M45
1000	216	1795	770	1160	M33	1170	M39	1210	M52
1200	254	1965	890	1380	M36	1390	M45	1420	M52