PTFE Seated butterfly valve

• Features and performance
• 1.With the elastic seat and fixed spherical surface seal structure,thus form a better tightness for the seal part by the medium pressure and the valve can achieve the bi-directional tightness with zero leakage.
• 2.The eccentric structure significantly reducing the friction of the seal faces and torque force.
• 3.V type axial contact packing realizes a Grade A corrosion resistant seal.
• 4.The resist compression shaft with a good stability.
• 5.Small in volume and light in weigh
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• High Performance Bi-direction HPBV Seated butterfly valve
• Structure & features
• Comparison between new and old structures
• Butterfly valve is an ideal blockage device used in conduits and is the main stream in the industry.Butterfly valves can operate quickly to its working positions with arotation of only 90 degree. It is simple in structure,light and economical in material, easy to handle and easy to realize remote control.However,the traditional butterfly valves are limited in their applications because they can only work at a normal temperature and a pressure below PN1.0MPa due to their non-optimal structure and seal material.The traditional butterfly valves achieve thier sealing by excessively pressing the disc edge onto the internal elastic rubber of PTFE seat ring, but their frictional torque force is large and seal faces can easily get fatigue, wear or crack resulting a sooner leakage, shorter life and narrower application range(See Figurel for Details).
• Our new valve can work well under a pressure of PN1.0~4.0MPa and at a temperture of -29~150^.C .The more the pressure on the Disc, the better the sealing (same as that in a check valve). The seal material of the seat ring is PTFE or TFE,which has a small frictional coefficient(oniy0.07) with the metal disc's convex face and has eliminated the problems regarding temperature, corrosion and ageing,bringing an increased working pressure,a longer service life and a borader application range (See Figure 1 for details).
•  
• Easy Operation by Eccentric Structure
• The double eccentric structure is made up of valve body,stem and disc.By shifting from a rotation to a translation motion when closing,the seat of the disc brought to a full contact with the seal,achieving a perfect sealing.The disc convex face moves away from the seat face quickly and completey when opening,significantly reducing the friction of the seal faces and the torque force (See Figure 2 for details).
•  
• Bi-directional zero leakage
• The valve with elastic seat and fixed spherical surface seal structure,thus form a better tightness for the seal part by the medium pressure and the valve can achieve the bi-directional tighthess with zero leakage.
•  
• Direction
• Standards
• Designing & manufacturing are according to the regulations of API 609.
• Flange is subject to ANSI 16.5.
• Face-to-face dimension is by the regulation of Enterprise standards and API 609..
• Pressure test is according to API 598.
• *Please contact us for items made according to other standards.
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• Coding system
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•  
• Specification

  Nominal pressure	PN	ANSI
  	0.6-10.0MPa	150LB-300LB
  Shell Test	1.5PN
  Seal Test (Water)	1.1PN
  Seal Test(air)	0.6MPa
  Body Material	Carbon steel C	CrNiTi P CrNiTi R
  Working Temp	-29~150 .C	-29~150 .C
  Suitable Medium	Water .Steam.Gas.Qil	Acid.Alkali corrosive.Medium

•  
• 150LB Discharge parameter diagram

  Nominal Dia DN	mm	100	125	150	200	250	300
  	in	4	5	6	8	10	12
  Discharge parameter Cv		410	655	1060	2230	3330	5120

• Nominal Dia DN	mm	350	400	450	500	600
  	in	14	16	18	20	24
  Discharge paramter Cv		5840	8080	10540	14060	21680

•  
• 300LB Discharge parameter diagram

  Nominal Dia DN	mm	100	125	150	200	250	300
  	in	4	5	6	8	10	12
  Discharge parameter Cv		410	655	1060	1820	3160	4780

• Nominal Dia DN	mm	350	400	450	500	600
  	in	14	16	18	20	24
  Disharge parameter Cv		5220	6950	9350	11350	18550

• Cv is recorded when the both sides of valve pressure are according to the IPSI standard.
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• Main overall and Connecting dimensions
• 
• GSD71F-10 GSD7T1F-10

  DN	L	D1	D2	4-Φ	N-M	H	H1	D0	Weight
  40	33	110	84	Φ18	4-M16	65	140	180	5
  50	46	125	99	Φ18	4-M16	70	150	200	6
  65	48	145	118	Φ18	4-M16	85	165	200	7
  80	48	160	132	Φ18	8-M16	95	175	260	8
  100	54	180	156	Φ18	8-M16	110	200	260	12
  125	57	210	184	Φ18	8-M16	125	225	300	18
  150	57	240	211	Φ22	8-M20	145	240	350	20
  200	64	295	266	Φ22	12-M20	200	270	400	31

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• GSD71F-16 GSD7T1F-16

  DN	L	D1	D2	4-Φ	N-M	H	H1	D0	Weight
  40	33	110	84	Φ18	4-M16	65	140	180	5
  50	46	125	99	Φ18	4-M16	70	150	200	6
  65	48	145	118	Φ18	4-M16	85	165	200	7
  80	48	160	132	Φ18	8-M16	95	175	260	8
  100	54	180	156	Φ18	8-M16	110	200	260	12
  125	57	210	184	Φ18	8-M16	125	225	300	18
  150	57	240	211	Φ22	8-M20	145	240	350	20
  200	64	295	266	Φ22	8-M20	200	270	400	31

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• High Performance Bi-direction HPBV Seated butterfly valve
• GSD71F-25 GSD7T1F-25

  DN	L	D1	D2	4-Φ	N-M	H	H1	D0	Weight
  40	33	110	84	Φ18	4-M16	65	140	180	5
  50	46	125	99	Φ18	4-M16	70	150	200	6
  65	48	145	118	Φ18	8-M16	85	165	200	7
  80	48	160	132	Φ18	8-M16	95	175	260	8
  100	54	190	156	Φ22	8-M20	110	200	260	12
  125	57	220	184	Φ26	8-M16	125	225	300	18
  150	57	250	211	Φ26	8-M24	145	240	350	20
  200	64	310	274	Φ26	12-M24	200	270	400	31

•  
• GSD71F-40 GSD7T1F-40

  DN	L	D1	D2	4-Φ	N-M	H	H1	D0	Weight
  40	33	110	84	Φ18	4-M16	65	140	180	5
  50	46	125	99	Φ18	4-M16	70	150	200	6
  65	49	145	118	Φ18	8-M16	85	165	200	7
  80	49	160	132	Φ18	8-M16	95	175	260	8
  100	54	190	156	Φ22	8-M20	110	200	260	12
  125	59	220	184	Φ26	8-M24	125	225	300	18

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• GSD71F-150Lb GSD7T1F-150Lb

  DN	L	D1	D2	4-Φ	N-M	H	H1	D0	Weight
  40	33	98.4	73.0	5/8	4-1/2	65	140	180	5
  50	46	120.7	92.1	3/4	4-5/8	70	150	200	6
  65	48	139.7	104.8	3/4	4-5/8	85	165	200	7
  80	48	152.4	127.0	3/4	4-5/8	95	175	260	8
  100	54	190.5	157.2	3/4	8-5/8	110	200	260	12
  125	57	215.9	185.7	7/8	8-3/4	125	225	300	18
  150	57	241.3	215.9	7/8	8-3/4	145	240	350	20
  200	64	298.5	269.9	7/8	8-3/4	200	270	400	31

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• GSD71F-300Lb GSD7T1F-300Lb

  DN	L	D1	D2	4-Φ	N-M	H	H1	D0	Weight
  40	33	114.5	73.0	7/8	4-3/4	65	140	180	5
  50	43	127.0	92.1	3/4	8-5/8	70	150	200	6
  65	46	149.2	104.8	7/8	8-3/4	85	165	200	7
  80	48	168.3	127.0	7/8	8-3/4	95	175	260	8
  100	54	200.0	157.2	7/8	8-3/4	110	200	260	12
  125	59	235.0	185.7	7/8	8-3/4	125	225	300	18
  150	59	269.9	215.9	7/8	12-3/4	145	240	350	20

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• Main overall and Connecting dimensions
• 
• High Performance Bi-direnction HPBV Seated butterfly valve
• GSD371F-10 GSD37T1F-10

  DN	L	D1	D2	4-Φ	N-M	H	H1	A	B	D0	Weight
  250	71	350	319	Φ22	12-M20	215	315	66	325	305	52
  300	81	400	370	Φ22	12-M20	255	360	78	315	305	74
  350	92	460	429	Φ22	16-M20	285	420	120	281	406	135
  400	102	515	480	Φ26	16-M24	315	430	120	281	406	193
  450	114	565	530	M24	20-M24	381	505	120	281	406	235
  500	127	620	582	M24	20-M24	420	550	120	281	406	300
  600	154	725	682	M27	20-M27	489	630	120	281	406	467
  700	165	840	794	M27	24-M27	502	765	166	327	300	650
  800	190	950	901	M30	24-M30	565	880	216	502	400	950
  900	203	1050	1001	M30	28-M30	600	882	216	502	400	1239
  1000	216	1160	1112	M33	28-M33	700	982	216	502	400	1789

•  
• GSD371F-16 GSD37T1F-16

  DN	L	D1	D2	4-Φ	N-M	H	H1	A	B	D0	Weight
  250	71	355	319	Φ26	12-M24	215	315	66	325	305	52
  300	81	410	370	Φ26	12-M24	255	360	78	315	305	74
  350	92	470	429	Φ26	16-M24	285	420	120	281	406	135
  400	102	525	480	Φ30	16-M27	315	430	120	281	406	193
  450	114	585	530	M27	20-M27	381	505	120	281	406	235
  500	127	650	582	M30	20-M30	420	550	120	281	406	300
  600	154	770	682	M33	20-M33	489	630	120	281	406	467
  700	165	840	794	M33	24-M33	502	765	166	327	300	650
  800	190	950	901	M36	24-M36	565	880	216	502	400	950
  900	203	1050	1001	M36	28-M36	600	882	216	502	400	1239
  1000	216	1170	1112	M39	28-M39	700	982	216	502	400	1789

•  
• High Performance Bi-direction HPBV Seated butterfly valve
• GSD371F-25 GSD37T1F-25

  DN	L	D1	D2	4-Φ	N-M	H	H1	A	B	D0	Weight
  250	71	370	330	Φ30	12-M27	215	315	66	325	305	52
  300	81	430	389	Φ30	16-M27	255	360	78	315	305	74
  350	92	490	448	Φ33	16-M30	285	420	120	281	406	135
  400	102	550	503	Φ36	16-M33	315	430	120	281	406	193
  450	114	600	548	M33	20-M33	381	505	120	281	406	235
  500	127	660	609	M33	20-M33	420	550	120	281	406	300
  600	154	770	720	M36	20-M36	489	630	120	281	406	467
  700	165	875	820	M39	24-M39	502	765	166	327	300	650
  800	190	990	928	M45	24-M45	565	880	216	502	400	950
  900	203	1090	1028	M45	28-M45	600	882	216	502	400	1239
  1000	216	1210	1140	M52	28-M52	700	982	216	502	400	1789

•  
• GSD371F-40 GSD37T1G-40

  DN	L	D1	D2	4-Φ	N-M	H	H1	A	B	D0	Weight
  150	59	250	211	Φ18	8-M24	175	285	66	325	305	30
  200	73	320	284	Φ30	12-M27	210	295	66	325	305	41
  250	83	385	345	Φ33	12-M30	240	350	78	315	305	52
  300	92	450	409	Φ33	16-M30	275	410	120	381	406	74
  350	117	510	465	Φ36	16-M33	351	470	120	281	406	105
  400	133	585	535	Φ39	16-M36	390	515	120	281	406	163
  450	149	610	560	M36	20-M36	426	560	120	281	406	205
  500	159	670	615	M39	20-M39	465	645	120	281	406	270
  600	181	795	735	M45	20-M45	549	700	120	281	406	437

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• GSD371F-150Lb GSD37T1F-150Lb

  DN	L	D1	D2	4-Φ	N-M	H	H1	A	B	D0	Weight
  250	71	362.0	323.8	1	12-7/8	215	315	66	325	305	52
  300	81	431.8	381.0	1	12-7/8	255	360	78	315	305	74
  350	92	476.3	412.8	1 1/8	12-1	285	420	120	281	406	135
  400	102	539.8	469.9	1 1/8	16-1	315	430	120	281	406	193
  450	114	577.9	533.4	1 1/4	16-1 1/8	381	505	120	281	406	235
  500	127	635.0	584.2	1 1/4	20-1 1/8	420	550	120	281	406	300
  600	154	749.5	692.2	1 3/8	20-1 1/4	489	630	120	281	406	467
  700	165	795.3	762.0	7/8	40-3/4	502	765	166	327	300	650
  800	190	900.2	863.6	7/8	48-3/4	565	880	216	502	400	950
  900	203	1009.7	971.6	1	44-7/8	600	882	216	502	400	1239
  1000	216	1120.6	1079.5	1 1/8	44-1	700	982	216	502	400	1789

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• GSD371F-300Lb GSD37T1F-300Lb

  DN	L	D1	4-Φ	N-M	H	H1	A	B	D0	Weight
  150	59	269.9	7/8	12-3/4	175	285	66	325	305	30
  200	73	330.2	1	12-7/8	210	295	66	325	305	41
  250	83	387.4	1 1/8	16-1	240	350	78	315	305	52
  300	92	450.8	1 1/4	16-1 1/8	275	410	120	381	406	74
  350	117	514.4	1 1/4	20-1 1/8	351	470	120	281	406	105
  400	133	571.5	1 3/8	20-1 1/4	390	515	120	281	406	163
  450	149	628.6	1 3/8	24-1 1/4	426	560	120	281	406	205
  500	159	685.8	1 3/8	24-1 1/4	465	645	120	281	406	270
  600	181	812.8	1 5/8	24-1 1/2	549	700	120	281	406	437

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• Main overall and Connecting dimensions
•  
• 
• High Performance Bi-direction HPBV Seated butterfly valve
• GSD071F-150Lb GSD07T1F-150Lb

  IN	L	K	4-Φ	N-M	H1	H2	H3	D	D1	N-Φ	C	Q	D0	f	Torpue
  2"	46	120.5	3/4	4-5/8	22	127	70	90	70	4-Φ9	11×11	14	--	2	32
  2.5"	48	139.5	3/4	4-5/8	22	127	85	90	70	4-Φ9	11×11	14	--	2	36
  3"	48	152.5	3/4	4-5/8	22	140	95	90	70	4-Φ9	14×14	16	--	2	43
  4"	54	190.5	3/4	8-5/8	22	155	110	90	70	4-Φ9	14×14	16	--	2	64
  5"	57	216	7/8	8-3/4	22	180	125	90	70	4-Φ9	14×14	18	--	2	95
  6"	57	241.5	7/8	8-3/4	22	191	145	90	70	4-Φ9	14×14	18	--	2	139
  8"	64	298.5	7/8	8-3/4	30	220	200	125	102	4-Φ12	19×19	24	--	2	239
  10"	71	362	1	12-7/8	40	255	215	150	125	4-Φ14	22×22	28	--	2	350
  12"	81	432	1	12-7/8	45	295	255	175	140	4-Φ18	27×27	36	--	2	523
  14"	92	476	1 1/8	12-1	45	324	285	175	140	4-Φ18	27×27	36	--	2	934
  16"	102	540	1 1/8	16-1	45	355	315	210	165	4-Φ20	27×27	36	--	2	1196
  18"	114	578	1 1/4	16-1 1/8	45	380	381	210	165	4-Φ20	36×36	48	--	2	1565
  20"	127	635	M1 1/8	20-1 1/8	60	440	420	300	245	8-Φ18	36×36	48	--	2	2119
  24"	154	749.5	M1 1/4	20-1 1/8	60	510	489	300	245	8-Φ18	46×46	60	--	2	3281

•  
• GSD071F-300Lb GSD07T1F-300Lb

  IN	L	K	4-Φ	N-M	H1	H2	H3	D	D1	N-Φ	C	Q	D0	f	Torpue
  2"			3/4	8-5/8	22	134	65	125	102	4-Φ12	11×11	16	--	2	49
  2.5"			7/8	8-3/4	22	135	70	125	102	4-Φ12	11×11	16	--	2	54
  3"			7/8	8-3/4	22	150	85	125	102	4-Φ12	14×14	16	--	2	68
  4"			7/8	8-3/4	22	170	95	150	125	4-Φ14	14×14	16	--	2	121
  5"			7/8	8-3/4	22	195	110	150	125	4-Φ14	14×14	18	--	2	212
  6"			7/8	12-3/4	22	215	175	150	125	4-Φ14	14×14	18	--	2	305
  8"			1	12-7/8	40	240	210	150	125	4-Φ14	22×22	28	--	2	609
  10"			1 1/8	16-1	45	275	240	150	125	4-Φ14	27×27	36	--	2	973
  12"			1 1/4	16-1 1/8	45	318	275	300	254	8-Φ18	36×36	48	--	2	1327
  14"			M1 1/8	20-1 1/8	60	380	351	210	165	4-Φ16	46×46	50	--	2	2240
  16"			M1 1/4	20-1 1/4	60	410	390	252	220	8-Φ16	46×46	55	--	2	2670
  18"			M1 1/4	24-1 1/4	70	450	426	330	290	8-Φ20	55×55	70	--	2	3422
  20"			M1 1/4	24-1 1/4	70	490	465	330	290	8-Φ20	55×55	90	--	2	4635
  24"			M1 1/2	24-1 1/2	70	550	549	330	290	8-Φ20	55×55	110	--	2	6250

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