Air Flow Control Pneumatic Ventilation Butterfly Valve

• Customization: Available
• Media: Gas
• Driving Mode: Electric
• Structure: Double-Eccentric Sealing
• Seal Form: Supercharging Pressured Sealed
• Valve Stem: Normal
• Work Pressure: Low Pressure (Pn<1.6mpa)
• Working Temperature: Medium Temperature (120°C<T<450°C)
• Material of Seal Surface: Soft Sealed
• Valve Body: Casting
• Standard: DIN
• Application: Industrial Usage
• Leakage Rate: Max3%
• Electric Actuator: Dkj/Zx
• Material: Carbon Steel / Stainless Steel
• Pressure: 10000PA
• Transport Package: Wooden Case
• Specification: Diameter 150-2000
• Trademark: JY
• Origin: China
• HS Code: 8481804090
• Production Capacity: 100sets/Year

Product Description

Air Flow Control Pneumatic Ventilation Butterfly Valve 

Butterfly valve is a simple structure of the regulating valve, but also can be used for low-pressure pipeline switch control.Ventilation butterfly valve is a non-sealed butterfly valve, widely used in building materials, metallurgy, mining, electricity and other production process medium temperature ≤ 300 °C nominal pressure of 0.1Mpa pipeline, to connect, open and close or adjust the amount of medium.
Structural features:
1. It is designed and manufactured with a new type of structure welded with a midline disc plate and a short structure steel plate. It has a compact structure, light weight, easy installation, small flow resistance, large circulation, avoiding the influence of high temperature expansion, and easy operation.
2. There are no connecting rods, bolts, etc., reliable operation and long service life. Can be installed in multiple stations, free from media flow

Classification:
As per the driver
(1) Electric butterfly valve
(2) Pneumatic butterfly valve
(3) Hydraulic butterfly valve
(4) Electro-hydraulic butterfly valve
As per structure
(1) Center seal butterfly valve
(2) Single eccentric seal butterfly valve
(3) Double eccentric seal butterfly valve
(4) Three eccentric seal butterfly valve
As per material
(1) Soft seal butterfly valve
a. The sealing pair consists of a non-metallic soft material and a non-metallic soft material.
b. The sealing pair consists of a metallic hard material and a non-metallic soft material.
(2) Metal hard seal butterfly valve. The sealing pair consists of a metal hard material and a metal hard material.
As per Sealed
(1) Forced seal butterfly valve
a. Flexible seal butterfly valve. Sealing ratio pressure when the valve is closed, the valve plate squeezing the valve seat, the elasticity of the valve seat or the valve plate
b. External torque sealing butterfly valve. The torque applied to the valve shaft generates sealing ratio
(2) Pressure sealing butterfly valve. The pressure of the spring member-sealing member on the valve seat or valve plate generates sealing ratio pressure
(3) Automatic sealing butterfly valve. The medium pressure automatically generates the seal pressure.
According to work pressure
(1) Vacuum butterfly valve. The working pressure is lower than the butterfly valve of the standard atmosphere.
(2) Low pressure butterfly valve. Nominal pressure PN <1.6MPa butterfly valve.
(3) Medium pressure butterfly valve. Nominal pressure PN is 2.5--6.4MPa butterfly valve.
(4) High pressure disc valve. Nominal pressure PN is a 1.0 to 80.0 Maps butterfly valve.
(5) Ultra-high pressure butterfly valve. Nominal pressure butterfly valve with PN >100MPa.
As per operating temperature
(1) High temperature butterfly valve. t>450 °C butterfly valve
(2) Medium temperature valve. The butterfly valve of 120 C<t<450 C
(3) Normal temperature butterfly valve. A 40C<t<; 120C butterfly valve
(4) Low temperature butterfly valve. A 100<t<-40C butterfly valve
(5) Ultra-low temperature butterfly valve. t<a 100 C butterfly valve

DN	Flange Dia.	Bolt     Size	L	L1	L2	N-Фd	Flange thickness
300	405	370	120	716	220	8-12	10
350	455	420	140	786	240	8-14	10
400	505	470	140	924	270	12-18	10
450	570	530	160	999	295	12-18	10
500	620	580	160	1079	325	12-18	10
600	720	680	180	1140	380	16-18	12
700	820	780	180	1240	430	16-18	12
800	920	880	200	1350	490	16-18	12
900	1040	990	200	1450	540	16-18	14
1000	1140	1090	220	1550	590	20-18	14
1100	1240	1190	220	1800	640	20-18	14
1200	1340	1290	240	1900	690	20-18	14
1300	1440	1390	240	2020	760	20-18	16
1400	1540	1490	260	2120	810	24-18	16
1500	1640	1590	260	2220	860	24-18	16
1600	1740	1690	280	2390	980	24-18	16
1700	1840	1790	280	2590	1030	28-22	16
1800	1940	1890	300	2709	1096	28-22	16
1900	2040	1990	300	2826	1146	32-22	16
2000	2150	2090	320	2926	1196	32-26	16
2200	2360	2300	340	3126	1296	36-26	16
2400	2560	2500	360	3326	1396	36-26	18
2600	2760	2700	380	3526	1496	40-26	18
2800	2960	2900	400	3726	1596	40-26	18
3000	3190	3110	400	4098	1698	44-30	18
3200	3390	3310	440	4338	1798	44-30	20
3400	3590	3510	440	4578	1898	48-30	20
3600	3790	3710	480	4780	1998	48-30	20
3800	4000	3910	480	5000	2098	52-30	22
4000	4210	4120	520	5200	2210	52-30	22