D371J-10The butterfly valve with worm gear pair clamp is a butterfly valve with valve stem rotating together as the opening and closing parts to realize the opening, closing and adjustment of the valve. The rubber lined butterfly valve is lined with rubber, and the valve plate is wrapped with rubber. In addition to cut-off and cut-off in pipeline, the sealing performance of butterfly valve has been taken as the main evaluation index in recent years, which is favored by the market. In addition, butterfly valve has the advantages of small size, light weight and simple structure. Compared with the gate valve with the same parameters, the average weight is reduced by 30 ~ 50%. The opening and closing process can be realized by rotating the butterfly plate by 90 degrees. Moreover, due to the similar medium force on both sides of the rotating shaft, the torque is opposite, and the opening and closing torque is small.

D371J-10Temperature resistance and suitable medium of main seal ring of worm gear double clip full lined rubber butterfly valve

Material code of sealing ring	Applicable temperature	Applicable media
NR	≤85℃	Applicable media
CR	≤85℃	Water, gas, acid and alkali
	≤100℃	Water, oil
EPDM	≤120℃	Water, steam, general acid and alkali
FKM	≤150℃	Water, steam, strong acid and alkali

Design and manufacture: gb12238 structure length: gb12221 (20 series) flange connection size: gb4216

D371J-10Material of main parts of worm gear double clip full lined rubber butterfly valve

1	valve body	Cast iron, ductile iron, carbon steel, stainless steel
2	Disc	Cast iron, ductile iron, carbon steel, stainless steel, carbon steel completely covered with rubber or fluoroplastics
3	Stem	Carbon steel nickel phosphorus, stainless steel
4	Seat sealing ring	NR, Cr, NBR, EPDM and FKM
	Handle	Aluminum alloy, carbon steel

Pressure rating: PN (MPA) 1.01.6
Test: lining layer: EDM
The test and inspection shall be in accordance with GB / t13927 standard
Nominal pressure: PN (MPA)
Valve body: PN × 1.5
Seal: PN × 1.1

D371J-10Main external connection dimensions of worm gear double clip full rubber lined butterfly valve(mm)
Nominal diameter DN	Nominal pressure MPa	working pressure MPa	L	D	D1	n-Φd	H1	H2	Do	H3	A	B	quality Kg
40	1.0	1.0	33	150	110	4-18	55	100	150	62	164	125	6
50			43	165	125	4-18	64	120	150	62	164	125	7
65			46	185	145	4-18	80	120	208	62	164	125	10
80			46	200	160	8-18	112	130	260	62	164	125	11
100			52	220	180	8-18	90	140	275	62	164	125	12
125			56	250	210	8-18	112	160	350	106	289	200	18
150			56	285	240	8-22	135	175	350	106	289	200	29
200			60	340	295	8-22	160	210	240	106	289	200	34.5
250		0.6	68	395	350	12-22	206	235	240	106	289	200	44
300			78	445	400	12-22	232	273	320	112	370	253	64.5
350			78	505	450	16-22	263	310	320	112	370	253	75.5
400			102	565	515	16-26	295	340	400	270	562	280	156
450			114	615	565	20-26	327	370	400	270	562	280	171.5
500			127	670	620	20-26	358	399	400	270	562	280	206.5

500			127	670	620	20-26	358	399	400	270	562	280	206.5
550		0.4	140	730	675	20-30	384	430	400	270	562	280	215
600			154	780	725	20-30	474	460	500	270	562	280	283
700			165	895	840	24-30	486	510	500	125	503	443	426
800			190	1015	950	24-33	591	672	500	200	513	531	550
900			203	1115	1050	28-33			500	200	513	531	1070
1000			216	1230	1160	28-36	721	800	550	273	713	815	1296