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Rotary ball valve

Product Overview

The main function of Rotary ball valve is that it can not only seal well under forward pressure, but also seal well when reverse pressure or reverse pressure is greater than positive pressure. When the positive pressure is applied, the medium pressure pushes the valve plate forward, and the sealing surface of the valve plate is close to the sealing surface of the valve seat to transmit pressure, and push the valve seat to the valve body step to make it well sealed. When the reverse pressure acts, the medium pressure pushes the valve plate to move backward, and the medium pressure pushes the valve seat to move backward at the same time. The sealing surface of the valve seat is close to the sealing surface of the valve plate to transmit pressure to make it well sealed.

Structural characteristics

1. The inclined elliptical butterfly plate radial dynamic balance sealing system is adopted, the force on both sides of the valve inlet and outlet is approximately balanced, the opening torque of the valve is small, the positive and reverse sealing performance is reliable, and the bidirectional pressure bearing capacity is 100%;
2. The sealing surface of the valve is made of integral metal sealing ring, which is machined with high precision. The sealing cross-section is elliptical, which forms a sealing pair with the metal sealing surface of the valve seat. When the valve is opened and closed, the sealing surface of butterfly plate contacts or disengages instantaneously along the 360 ° circle, which can quickly and accurately realize the opening or closing action;
3. Three eccentric structure is adopted, that is, an angle eccentricity is added on the basis of double eccentric butterfly valve.

Execution standard

Design specification: GB/T 12238, JB/T8527
Flange connection: GB/T 9113, JB/T79, HG20592
Structure length: GB/T12221
Tests and inspection: GB/T13927

Performance parameter

Product specification: DN50~2230mm
Pressure class: PN1.0~ 2.5mpa
Applicable medium: air, water, steam, gas, oil, acid, alkali, salt with weakly corrosive medium, etc
Applicable temperature: Carbon steel: -29℃~425℃ Stainless steel: -40℃~600℃
Driving mode: worm drive, pneumatic drive, electric drive, hydraulic drive
Main material: cast steel, stainless steel, chromium-molybdenum steel, alloy steel, duplex steel

Product Dimensions

PN1.0MPa

DN	L	D	D1	D2	H1	N-φd	E			H
DN	L	D	D1	D2	H1	N-φd	Manual	Pneumatic	Electric	Manual	Pneumatic	Electric
50	108	165	125	99	112	4-18	200	245	255	350	625	530
65	112	185	145	118	115	4-18	200	245	255	370	625	530
80	114	200	160	132	120	8-18	200	245	255	380	645	565
100	127	220	180	156	138	8-18	200	355	255	420	675	600
125	140	250	210	184	164	8-18	200	355	255	460	715	640
150	140	285	240	211	175	8-22	280	355	315	555	800	705
200	152	340	295	266	200	8-22	425	250	315	760	850	775
250	165	395	350	319	230	12-22	425	250	315	830	925	945
300	178	445	400	370	260	12-22	560	450	315	895	1035	1070
350	190	505	460	429	300	16-22	560	450	315	950	1070	1140
400	216	565	515	480	340	16-26	580	450	315	1190	1190	1210
450	222	615	565	530	350	20-26	580	650	714	1255	1250	1335
500	229	670	620	582	380	20-26	580	650	714	1305	1290	1415
600	267	780	725	682	450	20-30	660	850	810	1340	1455	1605
700	292	895	840	794	480	24-30	550	850	810	1520	1585	1844
800	318	1015	950	901	530	24-33	550	1250	810	1710	1700	2040
900	330	1115	1050	1001	580	28-33	550	1250	863	1810	1965	2255
1000	410	1230	1160	1112	650	28-36	750	1250	863	1960	2015	2380
1200	470	1455	1380	1328	760	32-39	925	1250	863	2250	2250	2640
1400	530	1675	1590	1530	850	36-42	925	1250	1055	2434	2250	2866
1600	600	1915	1820	1750	1030	40-48	925	1250	1055	2780	2750	3156
1800	670	2115	2020	1950	1230	44-48	980	1250	1183	3020	2950	3421
2000	760	2325	2230	2150	1350	48-48	980	1500	1286	3270	3350	3685

PN1.6MPa

DN	L	D	D1	D2	H1	n-φd	E			H
DN	L	D	D1	D2	H1	n-φd	Manual	Pneumatic	Electric	Manual	Pneumatic	Electric
50	108	165	125	99	112	4-18	200	245	255	350	625	530
65	112	185	145	118	115	4-18	200	245	255	370	625	530
80	114	200	160	132	120	8-18	200	245	255	380	645	565
100	127	220	180	156	138	8-18	200	355	255	420	675	600
125	140	250	210	184	164	8-18	200	355	255	460	715	640
150	140	285	240	211	175	8-22	280	355	315	555	800	705
200	152	340	295	266	200	12-22	425	250	315	760	850	775
250	165	405	355	319	230	12-26	425	250	315	830	925	945
300	178	460	410	370	260	12-26	560	450	315	895	1035	1070
350	190	520	470	429	300	16-26	560	450	315	950	1070	1140
400	216	580	525	480	340	16-30	580	450	315	1190	1190	1210
450	222	640	585	548	350	20-30	580	650	714	1255	1250	1335
500	229	715	650	609	380	20-33	580	650	714	1305	1290	1415
600	267	840	770	720	450	20-36	660	850	810	1340	1455	1605
700	292	910	840	794	480	24-36	550	850	810	1520	1585	1844
800	318	1025	950	901	530	24-39	550	1250	810	1710	1700	2040
900	330	1125	1050	1001	580	28-39	550	1250	863	1810	1965	2255
1000	410	1255	1170	1112	650	28-42	750	1250	863	1960	2015	2380
1200	470	1485	1390	1328	760	32-48	925	1250	863	2250	2250	2640
1400	53	1685	1590	1530	850	36-48	925	1250	1055	2434	2250	2866
1600	600	1930	1820	1750	1030	40-55	925	1250	1055	2780	2750	3156
1800	670	2130	2020	1950	1230	44-55	980	1250	1183	3020	2950	3421
2000	760	2345	2230	2150	1350	48-60	980	1500	1286	3270	3350	3685

PN2.5MPa

DN	L	D	D1	D2	H1	N-φD	E			H
DN	L	D	D1	D2	H1	N-φD	Manual	Pneumatic	Electric	Manual	Pneumatic	Electric
50	108	165	125	99	112	4-18	200	245	255	350	625	530
65	112	185	145	118	115	8-18	200	245	255	370	625	530
80	114	200	160	132	120	8-18	200	245	255	380	645	565
100	127	235	190	156	138	8-22	200	355	255	420	675	600
125	140	270	220	184	164	8-26	200	355	255	460	715	640
150	140	300	250	211	175	8-26	280	355	315	555	800	705
200	152	360	310	274	200	12-26	425	250	315	760	850	775
250	165	425	370	330	230	12-26	425	250	315	830	925	945
300	178	485	430	389	260	16-30	560	450	315	895	1035	1070
350	190	555	490	448	300	16-33	560	450	315	950	1070	1140
400	216	620	550	503	340	16-36	580	450	315	1190	1190	1210
450	222	670	600	548	350	20-36	580	650	714	1255	1250	1335
500	229	730	660	609	380	20-36	580	650	714	1305	1290	1415
600	267	845	770	720	450	20-39	660	850	810	1340	1455	1605
700	292	960	875	820	480	24-42	550	850	810	1520	1585	1844
800	318	1085	990	928	530	24-48	550	1250	810	1710	1700	2040
900	330	1185	1090	1028	580	28-48	550	1250	863	1810	1965	2255
1000	410	1320	1210	1140	650	28-55	750	1250	863	1960	2015	2380
1200	470	1530	1420	1350	760	32-55	925	1250	863	2250	2250	2640
1400	530	1755	1640	1560	850	36-60	925	1250	1055	2434	2550	2866
1600	600	1975	1860	1780	1030	40-60	925	1250	1055	2780	2750	3156
1800	670	2195	2070	1985	1230	44-68	980	1250	1183	3020	2950	3421
2000	760	2425	2300	2210	1350	48-68	980	1500	1286	3270	3350	3685

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