Dbb Ball Valve (DOUBLE BLOCK&BLEED VALVE) (GADBBQ47N)

• Material: CS/Ss
• Connection Form: Flange
• Driving Mode: Manual
• Nominal Pressure: ANSI CLASS 150-900
• Channel: Straight Through Type
• Structure: Fixed Ball Valve
• Model NO.: GADBBQ47N
• Type: Fixed Ball Valve
• Function: Blow-Down Valve
• Temperature: Low Temperature
• Application: Industrial Usage
• Main Feature: Double Block and Bleed
• Main Structure: 2 Floating Ball Valves and 1 Needle Valve
• Transport Package: Plywood Case
• Specification: CE, SGS, TUV
• Trademark: GOOLE, OEM
• Origin: Wenzhou, Zhejiang, China
• HS Code: 8481804090
• Production Capacity: 10, 000PCS/Year

Product Description

Flanged Trunnion DBB Ball Valve
Double Block and Bleed Ball Valve main parameter
Nominal diameter : 4"-24" , 100mm-600mm
Nominal pressure : 1500LB-2500LB , 1.6Mpa-32Mpa
Connection type : Flange
Material :CS,SS
Driving means : worm gear , electric , pneumatic .
 
Flanged Trunnion DBB Ball Valve
Double Block and Bleed Ball Valve Technical standard
Design and manufacture : API 6D
Structural Length : ASME B16.10
Flange connection : ASME B16.5
Test and Check : AIP 598
 
Flanged Trunnion DBB Ball Valve
Double Block and Bleed Ball Valve features
1. Double Block and Bleed Ball Valves, Which is the ideal equipment in cutting off medium, are widely used in hydraulic system pipeline of power, petrochemical , metallurgy , marine , petroleum , natural gas , coal gas , pharmaceutical and other industries.
2. Double Block and Bleed Ball Valve is also called DBB ball valve , DBB ball valve is a new kind of valve, it has completely double balls to cut off medium, discharge pressure and loot , Designed for reducing weight and saving space, Simplified installation procedure ,Reduce pressure in a pipeline system, Convenient instrument cleaning and maintenance . it is not only sealing reliable, and also saving the cost of manufacturing.
 
Flanged Trunnion DBB Ball Valve
DBB Ball Valve  

Specifications
1.Anti-fire safe design.Anti-static device 
2.Free leakage of body Sealed construction 
3.Double block&bleed. 
4.Extension stem.
 
1.Bow-out proof stem

For the purpose of preventing the stem from flying off  resulting in abnormal rising of the inner pressure of valve,shoulder is fixed at the lower part of the stem.In addition,in order to prevent leakage resulting from burnout of packing set of the stem in a fire,thrust bearing is set at the contact position of the shoulder at lower part of the stem and valve body.Thus an inverse seal seat is formed which will prevent leakage and avoid accident.
 
2.Anti-fire safe design
 
When the trunnion ball valve be used normally,its sealed by seat and ball surface,seat retainer sealed by O-ring and body,this is soft sealed and reliable sealing.When the seat and O-ring are burnt,the seat retainer and body will be sealed by expanded graphite.Thus act anti-fire safe purpose.
 
3.Anti-static device
 
In order to prevent friction among ball,stem and PTFE that generates static electricity which may light the combustibles and explosives that cause an accident,in this ball valve,static-conduction spring is set between the stem and the ball,the stem and the body.Thus static electricity is conducted to ground and system safety is secured.
 
4.Free leakage of body Sealed construction
 
The connective position of valve body and bonnet is double sealed by gasket and O-ring,on this base,such factors as fire,high temperature,shock and uneven opening or closing of the torque all can't induce external leakage.
 
5.Low torque in operation
 
The self-lubricated bearings are installed at the friction of stem,resulting in wear resistance,fiexibility of operation and low torque.
 
6. Double block&bleed(DBB)
 
When ball is full open or close position,the transmitter substance in center cavity of body can be released by drainage and emptying devices.In addition,the over loaded pressure in the center cavity of valve can be  released to low pressure end by self relief seat.
 
7.Emergency sealing
 
Compound injection holes are designed and compound injection valves are installed at locations of stem/cap and body support of side valve.When sealing of stem or seat is damaged to induce leakage,the compound can be used to do the second time sealing.A concealed check valve is installed in side of each compound injection valve to prevent compound from out flowing due to the action of transmitter substance.The top of the compound injection valve is the connector for fast connection with compound injection gun.
 
8.Extension stem
 
For the underground installed valve,the stem can be lengthened and for the convenience of operation the corresponding compound injection nozzle and drainage valve can be extended to the top of valve.
 
9.Automatic body cavity relief
 
When the body pressure going up un-normally as the unstable factor,the trunnion ball valve downstream seat will be pushed by un-normally pressure,and the release theunnormal pressure automatically,it doesn't damage to the sealing of upstream seat.
 
10.Various driving types
 
The top pad of valve designed according to ISO 5211,which is convenient for connection and exchange of various drivers.The common driving types are manual,electrical,pneumatic and pneumatic/hydraulic.

Product parameter
 

Main material	WCB, WCC, LCB, CF8, CF8M, CF3, CF3M, CN7M, CF8C, 4A, A105, LF2, F304, F316, F304L, F316L, F321, F51, ect.
Pressure rating	Class 150 to Class 2500 (PN2.5 to PN 420)
Standards applied	API. ASME, ANSI, NACE, CE/ EN, DIN, JIS, BS, ISO, TS, GB, etc.
Operative temperature	-196 °C to 980 °C ( -320.8 °F to 1796 °F)
Optional operation	Manual, Gear, Electric, Pneumatic, Hydraulic.

TRUNNION BALL VALVE Class 150Lb

DN		2	2 1/2	3	4	5	6	8	10	12	14	16	18	20	24	28	32	36	40
d1		51	64	76	102	127	152	203	254	305	337	387	438	489	591	686	781	876	978
L	RF	178	191	203	229	356	394	457	533	610	686	762	864	914	1067	1245	1372	1524	1753
	BW	216	241	283	305	381	457	521	559	635	762	838	914	991	1143	1346	1524	1727	1880
H		102	114	127	152	184	219	273	360	395	430	470	550	580	700	800	950	1100	1200
	H1	107	125	152	178	300	330	398	495	580	625	670	698	840	1050	1100	1150	1247	1374
	E	-	-	-	-	-	-	116	116	171	171	257	257	257	150	83	83	123	123
	F	-	-	-	-	-	-	350	350	420	420	400	400	400	410	650	650	735	735
	W	230	400	400	650	1050	150	600	600	800	800	800	800	800	800	800	800	800	00
	Wt(Kg)	12	16	22	35	58	74	205	322	460	576	864	1280	1600	3540	4500	5940	7540	9320
	H2	-	-	-	-	-	554	600	652	760	770	830	-	940	1020	1115	-	-	-
	L1	-	-	-	-	-	235	235	235	259	400	400	-	410	410	410	-	-	-
	H3	274	379	389	479	552	666	736	926	159	1127	1393	1468	1538	1370	1450	-	-	-
	L2	270	405	405	576	576	776	776	776	1060	1060	1360	1360	1360	2840	2840	-	-	-

TRUNNION BALL VALVE  Class 300Lb

DN		2	21/2	3	4	5	6	8	10	12	14	16	18	20	24	28	32	36	40
d1		51	64	76	102	127	152	203	254	305	337	387	438	489	591	686	781	876	978
L	RF	216	241	283	305	381	403	502	568	648	762	838	914	991	1143	1346	1524	1727	1880
	BW	216	241	283	305	381	457	521	559	635	762	838	914	991	1143	1346	1524	1727	1880
H		102	114	127	152	184	219	273	360	395	430	470	550	580	700	800	950	1100	1200
	H1	107	125	152	178	300	330	398	495	580	625	670	698	840	1050	1100	1150	1247	1374
	E	-	-	-	-	-	-	116	116	171	171	257	257	257	150	83	83	123	123
	F	-	-	-	-	-	-	350	350	420	420	400	400	400	410	650	650	735	735
	W	230	400	400	650	1050	1050	600	600	800	800	800	800	800	800	800	800	800	800
	Wt(Kg)	15	24	30	55	87	118	255	370	533	640	1030	1524	2100	4200	5300	7860	8684	10300
	H2	-	-	-	-	-	235	235	400	400	410	410	-	420	690	690	-	-	-
	L1	-	-	-	-	-	74	350	350	420	420	400	-	400	410	650	-	-	-
	H3	340	379	452	479	646	666	814	1002	1059	1150	1205	1250	1295	1390	1470	-	-	-
	L2	405	405	574	574	756	756	1060	1060	1060	1360	1360	2840	2840	3300	3300	-	-	-

TRUNNION BALL VALVE  Class 400Lb

DN		2	2 1/2	3	4	6	8	10	12	14	16	20	24	28
d1		51	64	76	102	152	203	254	305	337	387	489	591	686
L	RF	292	330	356	406	495	597	673	762	826	902	1054	1232	1397
	BW	295	333	359	410	498	600	676	765	829	905	1060	1241	1410
H		114	124	133	159	250	294	395	445	500	530	660	800	900
650735	H1	108	155	197	235	300	374	445	512	550	615	810	1010	1180
	E	116	116	116	116	116	171	171	257	257	257	150	83	123
	F	350	350	350	350	350	420	420	400	400	400	410	650	735
	W	600	600	600	600	600	800	800	800	800	800	800	800	800
	Wt(Kg)	23	35	49	91	192	355	640	880	1100	1540	2800	530	5700
	H2	-	-	-	-	554	574	931	771	867	805	979	1085	1147
	L1	-	-	-	-	235	235	400	400	410	410	420	690	690
	H3	340	-	-	576	666	895	1002	1059	1160	1250	1320	1470	1520
	L2	405	-	-	479	756	1060	1060	1360	1360	2840	2840	3300	3300

TRUNNION BALL VALVE Class 600Lb

DN		2	2 1/2	3	4	6	8	10	12	14	16	20	24	28
d1		51	64	76	102	152	203	254	305	337	387	489	591	686
L	RF	292	330	356	432	559	660	787	838	889	991	1194	1397	1549
	BW	295	333	359	435	562	664	791	841	892	994	1200	1407	1562
H		114	124	133	159	250	294	395	445	500	530	660	800	900
	H1	108	155	197	235	300	374	445	512	550	615	810	1010	1180
	E	116	116	116	116	116	171	171	257	257	257	150	83	123
	F	350	350	350	350	350	420	420	400	400	400	410	650	735
	W	600	600	600	600	600	800	800	800	800	800	800	800	800
	Wt(Kg)	35	38	55	102	232	390	710	960	1700	1970	3250	5800	6700
	H2	-	-	-	-	569	658	694	765	825	917	998	1098	1185
	L1	-	-	-	-	235	259	400	410	410	420	690	690	690
	H3	340	-	-	479	666	895	1002	1059	1160	1250	1320	1470	1520
	L2	405	-	-	576	756	1060	1060	1360	1360	2840	2840	3300	3300

TRUNNION BALL VALVE  Class 900Lb

DN		2	2 1/2	3	4	6	8	10	12	14	16	18	20	24
d1		51	64	76	102	152	203	254	305	327	375	426	473	572
L	RF	368	419	381	457	610	737	838	965	1029	1130	1219	1321	1549
	BW	371	422	384	460	613	740	841	968	1038	1140	1232	1334	1568
H		217	241	259	297	360	322	420	470	510	600	700	720	810
	H1	126	158	191	216	270	394	502	572	675	762	866	894	965
	E	116	116	116	116	171	171	257	257	150	150	180	180	220
	F	350	350	350	350	420	420	400	400	410	410	650	650	735
	W	600	600	600	600	800	800	800	800	800	800	800	800	800
	Wt(Kg)	50	60	80	125	270