D371X Type a double clip worm wheel butterfly valve pn6-pn16 is suitable for regulating flow and intercepting medium on water supply and drainage and gas pipelines of medicine, chemical industry, petroleum, electric power, light textile, papermaking, etc., and the applicable temperature is less than or equal to 80 ℃.

1、结构简单紧凑、小型轻便，容易拆装及维修，并可在任意位置安装； 2、90 度回转，启闭迅速； 3、流量特性趋于直线，调节性能好； 4、选择不同零部件材质，可适用于多种介质；

D371X Performance parameters of pn6 ～ PN16 type a type of double clip worm gear butterfly valve

model

D371X-6	D371X-10	D371X-16Q
working pressure（MPa）		0.6	1.0	1.6
Applicable temperature（℃）		-20～80
Applicable media		All kinds of organic solvents and water
Material Science	valve body	Gray cast iron		Ductile iron
	Valve plate	Gray cast iron		Gray cast iron
	Stem	stainless steel		stainless steel
	Sealing surface	NBR、EPDM		Fluororubber
	filler	V-shaped combined seal ring, flexible graphite

D371X Connecting dimensions of pn6 ～ PN16 of type a type a double clip worm gear butterfly valve(mm)

Nominal diameter	L	0.6MPa		1.0MPa		1.6MPa		H	H1
		D1	Z-d	D1	Z-d	D1	Z-d
50	43	110	4-14	120	4-23	120	4-23	160	80
65	46	130	4-14	136	4-26.5	136	4-26.5	175	88
80	46	150	4-18	160	4-18	160	4-18	180	96
100	52	170	4-18	185	4-24.5	185	4-24.5	200	115
125	56	200	4-18	215	4-23	210	4-23	213	128
150	56	225	4-18	238	4-25	238	4-25	225	140
200	60	280	4-18	295	4-25	295	4-25	260	175
250	68	335	4-18	357	4-29	357	4-29	290	202
300	78	395	4-23	407	4-29	407	4-29	330	242
350	78	445	4-23	467	4-30	467	4-30	360	266
400	102	495	4-23	515	4-26	525	4-26	390	298
450	114	550	4-23	565	4-26	585	4-26	410	315
500	127	600	4-23	620	4-26	650	4-26	430	348
600	154	705	4-25	725	4-30	770	4-30	490	400
700	165	810	4-25	840	4-30	840	4-30	550	520
800	190	920	4-30	950	4-34	950	4-34	610	591
900	203	1020	4-27	1050	4-30	1050	4-30	680	660
1000	216	1120	4-30	1160	4-30	1170	4-30	730	670
1200	254	1340	4-45	1380	4-45	1390	4-45	835	780
1400	270	1560	4-45	1590	4-45	1590	4-45	960	895
1600	318	1760	4-52	1820	4-52	1820	4-52	1200	1020

 

1. Before installation, check whether the specification, pressure, temperature and corrosion resistance of butterfly valve meet the use requirements. Check whether the parts are damaged or loose.
2. The butterfly valve can be installed on the pipeline at any angle and should be closed; when welding the pipe flange, the valve sealing port should be blocked with a plate to prevent particles and sundries from damaging the sealing surface. After welding, take down the valve, clean the valve sealing surface and pipe cavity, and then install the fixed valve.
3. Please pay attention to the pressure bearing direction when the valve is closed.
4. Before installation, the sealing surface (sealing surface at both ends, sealing surface of butterfly plate and sealing surface of valve seat) shall be thoroughly cleaned to remove dust and dirt.
5. Before installation, the butterfly valve should be air tested, and the opening and closing position should be flexible, and the opening and closing position should be consistent with the position indicated by the pointer.
6. Manual operation, clockwise is off, counter clockwise is on, pointer indication is in place, it is not allowed to open and close the valve with additional force.
7. During the pressure test of the valve, it is not allowed to use single flange for installation and pressure test, but double flange installation and pressure test must be adopted. The test pressure shall comply with GB / T13927-92.
8. The bolts shall be tightened symmetrically and alternately instead of separately.
9. The limit screw has been adjusted before delivery, so it is not allowed to adjust it easily. Please refer to the manual for electric drive device.
10. When the electric butterfly valve leaves the factory, the opening and closing stroke of the control mechanism has been adjusted. In order to prevent the wrong direction when the power supply is connected, the user should first manually open it to the half open position before connecting the power for the first time, and then press the inching switch to check that the direction of the indicator wheel is consistent with the opening direction of the valve.
11. If the valve is found to be open and closed abnormally, the cause shall be found out for repair and elimination, so as to prevent the valve from being damaged due to opening and closing by means of applying force.