1. Overview of electric flange butterfly valve:

D941X Electric Flange Soft Seal Butterfly Valve is suitable for water supply and drainage and gas pipelines with temperature ≤120℃ and nominal pressure ≤1.6MPa for food, medicine, chemical industry, petroleum, electric power, light textile, papermaking and other water supply and drainage and gas pipelines.

 

The electric flanged butterfly valve is composed of an electric actuator and a flanged inch butterfly valve, which can be divided into switch control and intelligent adjustment (4-20ma analog signal control) according to the working mode and conditions. The actuator works, the rotating system drives the disc on and off in the 0-90 range. The structural performance of the electric flanged butterfly valve is better than that of the wafer inch butterfly valve. It is recommended to use the electric flanged butterfly valve under the conditions of high pressure resistance and diameter exceeding DN600.

Features of Electric Flange Soft Seal Butterfly Valve-Overview Description-Working Principle-Standard Design Standards-Dimensions

Valve basic parameters
product name:	Electric Flange Soft Seal Butterfly Valve
Product number:	D941X
Connection method:	Flange connection
Structural way:	Midline type structure
Drive mode:	Electric
Product caliber:	DN50-DN1800
Nominal pressure:	0.6-1.6MPA
Valve body material:	Carbon Steel, Ductile Iron

2. Performance characteristics of electric flange butterfly valve:

(1). The characteristics of flange butterfly valve can realize remote control;

(2). The power supply is the driving energy of the electric butterfly valve, with a wide range of power sources and wide coverage, saving human resources and improving work efficiency;

(3). A series of electric actuator options provide convenient operation and meet various control requirements, signal feedback, flow adjustment, explosion-proof and other functions,

(4). Ultra-small, mechanical self-locking, different seals can be replaced to adapt to different operating conditions.

(5). It is easy to install and maintain anywhere.

(6). The seal can be replaced, and the reliability has zero leakage to the two-way seal.

(7). The sealing material has the characteristics of anti-aging, anti-corrosion and long life.

3. Product parameters Electric flange butterfly valve working principle:

The electric flange butterfly valve uses an electric actuator to input a standard signal of 0-10ma, and the motor unit drives the angular torque of the gear, turbine and worm to rotate the disc. When the valve is fully opened, the thickness of the disc is the resistance of the medium flowing through the valve body, so the pressure drop through the valve is very small, so the flow control characteristics are very good. Electric flanged butterfly valves are available in two sill styles: elastic sill and metal sill. Elastomeric sealing valve that can be sealed on the valve body or attached around the disc. Metal-sealed valves generally outlast elastomeric-sealed valves, but are difficult to seal completely. Metal seals can accommodate higher operating temperatures, while elastomeric seals also suffer from temperature limitations. If flow control requires an electric flanged butterfly valve, the main thing is to choose the correct size and type of valve.

4. electric flange soft sealing butterfly valve executive standard

Design standard: GB/T12238-1989

Flange connection size: GB/T9113.1-2000; GB/T9115.1-2000;

Structure length: GB/12221-1989

Pressure test: GB/T13927-1992; JB/T9092-1999

5. Main technical parameters of electric butterfly valve

Nominal diameter	DN(mm)	50~2000
Nominal pressure	PN(MPa)	0.6	1.0	1.6
Test pressure Ps (MPa)	Strength test	0.9	1.5	2.4
	sealing test	0.66	1.1	1.76
	Air tightness test	0.6	0.6	0.6
Applicable media	Air, water, sewage, steam, gas, oil, etc.
drive mode	Manual, worm and worm gear drive, pneumatic drive, electric drive.

6. The material of the main parts of the flange soft sealing butterfly valve

Part Name	Material
valve body	Ductile iron+NBR/EPDM
Butterfly board	Ductile cast steel, cast steel, stainless steel and special materials
sealing ring	Ductile cast steel, cast steel, alloy steel, stainless steel
valve stem	2Cr13, stainless steel
packing	O-Ring, Flexible Graphite

7. Electric main connection and external dimensions

Nominal diameter		structure length	External Dimensions (Reference Value)				Connection size (standard value)				refer to weight
							0.6MPa
mm	inch	L	H	H0	A	B	D	D1	D2	n-d
50	2	108	63	306	180	200	140	110	88	4-14	13
65	21/2	112	70	321	180	200	160	130	108	4-14	14
80	3	114	83	346	180	200	190	150	124	4-18	15.5
100	4	127	105	387	180	200	210	170	144	4-18	19.5
125	5	140	115	411	180	200	240	200	174	8-18	25.5
150	6	140	137	447	270	280	265	225	199	8-18	28.5
200	8	152	164	572	270	280	320	280	254	8-18	48
250	10	250	206	646	270	280	375	335	309	12-18	69
300	12	270	230	738	380	420	440	395	363	12-22	91
350	14	290	248	761	380	420	490	445	413	12-22	110
400	16	310	289	877	450	470	540	495	463	16-22	140
450	18	330	320	938	480	490	595	550	518	16-22	180
500	20	350	343	993	480	490	645	600	568	20-22	215
600	24	390	413	1131	480	490	755	705	667	20-26	290
700	28	430	478	1476	640	660	860	810	772	24-26	560
800	32	470	525	1533	640	660	975	920	878	24-30	910