D341J-16 worm gear flange type half lined rubber butterfly valve is suitable for regulating flow and intercepting medium on water supply and drainage and gas pipelines of food, medicine, chemical industry, petroleum, electric power, light textile, papermaking, etc. with temperature ≤ 85 ℃ and nominal pressure ≤ 1.6Mpa. Its main features are: novel and reasonable design, unique structure, light weight, quick opening and closing. Small operating torque, convenient operation, labor saving and dexterous. It can be installed in any position and easy to maintain. The sealing element can be replaced, the sealing performance is reliable, and the two-way sealing is zero leakage. The sealing material has the characteristics of aging resistance, corrosion resistance and long service life.

D341J-16Main technical parameters of worm flange type half lined rubber butterfly valve

Nominal diameter	DN（mm）	50～2000
Nominal pressure	PN（MPa）	0.6	1.0	1.6
Test pressure	strength test	0.9	1.5	2.4
	Sealing test	0.66	1.1	1.76
	Airtight seal test	0.6	0.6	0.6
Applicable media	Air, water, sewage, steam, gas, oil, etc.
Driving form	Manual, worm gear drive, pneumatic drive, electric drive.

1. The design is novel, reasonable, unique in structure, light in weight and quick in opening and closing.
2. Small operating torque, convenient operation, labor saving and dexterous.
3. It can be installed in any position and easy to maintain.
4. The sealing element can be replaced, the sealing performance is reliable, and the two-way sealing is zero leakage.
5. The sealing material has the characteristics of aging resistance, corrosion resistance and long service life.

D341J-16Main technical parameters of worm flange type half lined rubber butterfly valve

Nominal diameter	DN（mm）	50～2000
Nominal pressure	PN（MPa）	0.6	1.0	1.6
Test pressure	strength test	0.9	1.5	2.4
	Sealing test	0.66	1.1	1.76
	Airtight seal test	0.6	0.6	0.6
Applicable media	Air, water, sewage, steam, gas, oil, etc.
Driving form	Manual, worm gear drive, pneumatic drive, electric drive.

D341J-16Selection of sealing material and applicable temperature of worm gear flange type half lined rubber butterfly valve

Material variety	Chloroprene rubber	Butadiene rubber	Ethylene propylene rubber	teflon	silicon rubber	Fluororubber
Code name	X或or J	XA或or JA	XB或or JB	XC、JC或or F	XD或or JD	XE或or JE
High temperature resistance to Zui	82℃	93℃	150℃	232℃	250℃	204℃
Resistance to low temperature of Zui	-40℃	-40℃	-40℃	-268℃	-70℃	-23℃
Applicable operating temperature	≤65℃	≤80℃	≤120℃	≤200℃	≤200℃	​≤180℃

Design standard: GB / t2238-1989
Flange connection size: GB / t9113.1-2000; GB / t9115.1-2000; jb78
Structural length: GB / t12221-1989
Pressure test: GB / t13927-1992; JB / t9092-1999

D341J-16Main external connection dimensions of worm gear flange type semi rubber lined butterfly valve(mm)

nominal Diameter	length	Dimensions				Connection size
						0.6MPa				1.0MPa				1.6MPa
mm	L	H	H0	A	B	D	D1	D2	n-d	D	D1	D2	n-d	D	D1	D2	n-d
50	108	63	306	180	200	140	110	88	4-14	165	125	99	4-18	165	125	99	4-18
65	112	70	321	180	200	160	130	108	4-14	185	145	118	4-18	185	145	118	4-18
80	114	83	346	180	200	190	150	124	4-18	200	160	132	8-18	200	160	132	8-18
100	127	105	387	180	200	210	170	144	4-18	220	180	156	8-18	220	180	156	8-18
125	140	115	411	180	200	240	200	174	8-18	250	210	184	8-18	250	210	184	8-18
150	140	137	447	270	280	265	225	199	8-18	285	240	211	8-22	285	240	211	8-22
200	152	164	572	270	280	320	280	254	8-18	340	295	266	8-22	340	295	266	12-22
250	250	206	646	270	280	375	335	309	12-18	395	350	319	12-22	405	355	319	12-26
300	270	230	738	380	420	440	395	363	12-22	445	400	370	12-22	460	410	370	12-26
350	290	248	761	380	420	490	445	413	12-22	505	460	429	16-22	520	470	429	16-26
400	310	289	877	450	470	540	495	463	16-22	565	515	480	16-26	580	525	480	16-30
450	330	320	938	480	490	595	550	518	16-22	615	565	530	20-26	640	585	548	20-30
500	350	343	993	480	490	645	600	568	20-22	670	620	582	20-26	715	650	609	20-33
600	390	413	1131	480	490	755	705	667	20-26	780	725	682	20-30	840	770	720	20-36
700	430	478	1476	640	660	860	810	772	24-26	895	840	794	24-30	910	840	794	24-36
800	470	525	1533	640	660	975	920	878	24-30	1015	950	901	24-33	1025	950	901	24-39
900	510	585	1655	750	860	1075	1020	978	24-30	1115	1050	1001	28-33	1125	1050	1001	28-39
1000	550	640	1765	850	900	1175	1120	1078	28-30	1230	1160	1112	28-36	1255	1170	1112	28-42
1200	630	755	1995	850	900	1405	1340	1295	32-33	1455	1380	1328	32-39	1485	1390	1328	32-48

 

Butterfly valve has the advantages of simple structure, small volume, light weight, and less components. It can be made up of several key parts. It is very convenient to open the butterfly valve. You only need to select the switch to 90 degrees. The butterfly valve controls the fluid very well. It can increase or decrease the flow at any time. The valve has certain resistance when transporting any fluid The resistance of butterfly valve mainly comes from its own, such as the thickness of butterfly valve body. If you want to reduce the resistance to fluid, you only need to reduce its thickness.
The elastic seal has the limitation of temperature.
Butterfly valve has a wide range of application. If it is used to control the flow, it needs to choose different types and valve body size, because the butterfly valve itself is more suitable for some larger diameter valves. Butterfly valve is not only widely used in petroleum, gas, chemical industry, water treatment and other general industries, but also used in the cooling water system of thermal power station.
1. During installation, the disc should be stopped in the closed position.
2. The opening position should be determined by the rotation angle of butterfly plate.
3. For butterfly valve with bypass valve, the bypass valve should be opened before opening.
4. The installation shall be carried out according to the manufacturer's installation instructions, and the heavy butterfly valve shall be provided with a firm foundation.