GB Cast Steel Trunnion Ball Valve

Model schedule illustration

 

 

●Series code:The series code of our company is FY

●Special requirement code: K-Antisulphur type    D-Low temperature type    EX-Pole extending type    M-Ground burying type

●Valve type code: Q-Ball valve

●Driving manner code: 3-Worm wheel and screw trensmission    6-Air driving    7-Hydrodynamic driving

                                           8-Air-hydro operated    9-Electric driving    9e-Explosion electric driving

●Connecting type code: 1-The interior whorl joining    2-The other whorl joining    4-The flange joining

                                             6-To welding joining     7-To inserting joining      8-The caliper joining

●Design feature code:1-Direct floating type 4—Floating type three direct links of Model L 5—Floating type three direct links of Model T

                                        7-Direct regular type 8-Regular type Model T three direct links 9-Regular type Model L three direct links

●Sealing formation code: Y-Hard alloy      F-Strengthen the polytetrafluoroethylene (PTFE)      N-Nylon PPL-Counterpoint polyphenyl

●Pressure grade code: The 10 times of the nominal pressure MPa, pound grade io practical number

●Body material code: C-WCB     I-WC6、ZG1Cr5Mo     V-WC9、ZG20CrMoV     P-CF8、ZG1Cr18Ni9Ti

                                          R-CF8M、ZG1Cr18Ni12Mo2Ti      S-CF3      L-CF3M      F-LCB      N-LC3

 

 

Standards

GB Trunnion Ball Valve

Design and Manufacture: GB/T19672、GB/T12237

Face to Face Dimension: GB/T12221、GB/T19672

Flange Connection Dimension: JB/T79、GB/T9113、HG20592

Test and Inspection: JB/T9092

Fire-safe Design: JB/T6899

 

 

Design Features of  Trunnion Ball Valve

 

Urgent Grease Injection Device

 

According to customers' requirement the trunnion ball valve made by our company are provided with devices for urgent grease injection, which are on both the stem and seat for the trunnion ball valves of DN> 150mm (NPS6), and in the body cavity for the valve of DN<125mm. When the O ring of stem or the body seat ring is damaged due to accident, the medium leakage between body and stem can be prevented by injecting the sealing grease through the device.

 

 

Double-blockand Bleed Functions

 

In general, our company's trunnion ball valve features the front ball sealing design structure. Each seat of the ball valve can separately cut off the medium at both inlet and outlet of the valve to realize double-block functions. When the ball valve is close, body cavity and two of the body ends can be blocked with each other even if both the inlet and outlet are under pressure, when the medium left in the body cavity might be bled through the relief valve.

 

 

Blow-out proof stem

 

Blow-out proof structure is provited with for the stem. which is positioned by the up-end cap and screw, being guaranteed not to be blown-out by the medium even if at abnormal risen pressure in the cavity.

 

 

 

Fire Safe Design

 

With the valve heated in a fire application, the non-metal material parts such as seat sealing ring of PTFE, O ring for the stem and sealing gasket for body and bonnet, might be damaged due to high temperature. Our company's special design of auxiliary metal to metal or the graphite seal is provided for the trunnion ball valve to effectively prevent both internal and external leakage of the valve. As required by customers, our company's fire safe design for the trunnion ball valve meets the requirement API 607, API 6Fa, BS6755 and JB/T 6899.

 

 

 

 

Self-relief in the Body Cavity

 

As the liquid medium left in the body cavity gasifies due to increased temperature, the pressure in the body cavity becomes abnormally higher, when the medium itself in the cavity would propel the seat and self-relieves the pressure to ensure the safety of valve.

 

 

 

 

The Bi-sealing Design Structure, i.e.Seat Sealing In Front of the Ball and Seat Sealing Behind the Ball

 

According to some special working conditions andcustomers' requirement, our company is has provided the trunnion ball valve with the Bi-sealing design structure, i.e.seat sealing in front of the ball and seat sealing behind the ball, thus the reliable sealing of the valve is ensured because the valve can perform normally even if one of the effective sealing designs becomes lost due to the abnormal condition.

 

Regarding the seat in front of the ball, the piston effect formed by the area difference between D1 and D2, plus the pre-tightened force of a spring would cause the seat in front of the ball by the pressure difference of the medium before and after the valve to touch the ball closely to form the tightness, of which the sealing force will become bigger as the pressure difference gets higher.

 

Regarding the seat after the ball, the piston effect formed by the area difference between D2 and D3, plus the pretigh-tened force of a spring would cause the seat behind the ball to touch the ball closely to form the tightness, of which the sealing force willbecome bigger as the pressure difference gets higher.

 

 

 

 

Anti-static Design

 

The ball of the trunnion ball valve gets close contact with each other through the trunnion, adjusting cushion and down-end cap, the passage of static electricity thus forms together with the valve, which may lead the static electricity caused by sparks generated by friction between the ball and seat during on and off performance to the ground to prevent the posible risk of fire or explosion.

 

 

 

Mounting Pad Provided

 

Our company is has provided for trunnion ball valve with a mounting pad for fixing the actuators,such as worm gear, pneumatic, electric, hydraulic and pneumatic &hydraulic acturtors.

 

 

 

Model schedule illustration

 

Valve models compiled per JB/T308 *compilation method of valve model"

 

 

 

Operation Torque of Trunnion Ball Valve

 

The operation torque data of soft sealed trunnion ball valve in the following table are calculated based on normal temperature and clean medium. As selecting actuator, it is suggested that drive torque of actuator be more than 1.3 times the operation torque of ball valve at least. In case of high temperature and low temperature working conditions or unclean medium, it is possible that valve operation torque gets increased, which should be taken into full consideration as selecting actuators. Operation torque for metal to metal sealed trunnion ball valve is about 3~4 times that of soft sealed trunnion ball valve.

 

NPS	DN	Operation torque of soft sealed trunnion ball valve N.m
		Class150 PN20	Class300 PN50	Class600 PN110	Class900 PN150	Class1500 PN260	Class2500 PN420	PN16	PN25	PN40	PN63	PN100	PN160
1 ¹/₂	40	-	-	-	-	100	160	-	-	-	-	-	-
2	50	-	-	70	100	155	250	-	-	-	-	70	105
2 ¹/₂	65	-	-	120	170	265	420	-	-	-	-	120	180
3	80	-	-	280	320	500	800	-	-	-	-	230	340
4	100	110	200	340	480	750	1200	100	140	170	240	340	500
5	125	180	290	550	780	1200	1900	160	220	260	350	550	820
6	150	340	480	800	1100	1700	2700	300	380	450	600	800	1150
8	200	500	850	1700	2400	3700	5900	450	630	750	1300	1700	2500
10	250	830	1400	2800	4000	6200	9900	750	1050	1250	2000	2800	4200
12	300	1400	2400	4200	5900	9100	-	1250	1750	2100	2900	4200	6200
14	350	2200	3100	5800	8100	-	-	2000	2600	2800	3700	5800	-
16	400	2600	4800	7500	10500	-	-	2350	3200	4300	5800	7500	-
18	450	3700	6100	9500	-	-	-	3300	4600	5500	-	-	-
20	500	4800	7500	11500	-	-	-	4300	6000	6800	-	-	-
24	600	8200	12000	16500	-	-	-	7400	10000	11000	-	-	-
26	650	9600	15000	-	-	-	-	-	-	-	-	-	-
28	700	12000	19000	-	-	-	-	-	-	-	-	-	-
30	750	14000	22000	-	-	-	-	-	-	-	-	-	-
32	800	16000	28000	-	-	-	-	-	-	-	-	-	-
36	900	20000	35000	-	-	-	-	-	-	-	-	-	-

 

 

 

Technical specification

 

	Design reference	GB
	Design standard	GB/T 19672、GB/T 12237
	Structural length	GB/T 12221
	Flanged endsr	GB/T 9113、JB/T 79
	Butt-welding ends	GB/T 12224
	Test & inspection	JB/T 9092

 

Notes: The sizes of valve connecting flange and butt-welding terminas can be designed according to customer's requirement.

 

 

 

Major parts material form

 

	No.	Accessory name	Material
			GB
	1	The end covering	WCB
	2	Nut	35
	3	Bottom cover	WCB
	4	Gasket	PTFE,Graphite+stainless steel
	5	Screw	35CrMo
	6	Put the valve stem**	1Cr13
	7	O Ring	NBR
	8	Gasket	PTFE,Graphite+stainless steel
	9	Body	WCB
	10	Blowdown is filled in	25
	11	Spring	65Mn
	12	Seat*	25
	13	Sealing ring	PTFE
	14	O Ring	NBR
	15	Grease injection valve	Package
	16	Ball*	WCB+HCr
	17	Stem**	1Cr13
	18	Key	45
	19	Gasket	PTFE+stainless steel
	20	O Ring	NBR
	21	Packing case	25
	22	Screw	35CrMo
	23	Packing seat	1Cr13
	24	Packing	PTFE;Carbon fibre;Soft graphite
	25	Packing gland	WCB
	26	Yoke	Q235A
	27	Connection set	45

 

The material of this part about the anti-sulphur type valve is GB (1Cr18Ni9+Ni.P), ASTM(A182-304+Ni.P)

The material of this part about the anti-sulphur type valve is GB (1Cr18Ni9),ASTM(A276-321)

Major parts of the valve series and materials of sealing surface differ according to actual working condition and customer's special requirement.

 

 

 

Technical specification

 

	Design reference	GB
	Design standard	GB/T 19672、GB/T 12237
	Structural length	GB/T 12221
	Flanged endsr	GB/T 9113、JB/T 79
	Butt-welding ends	GB/T 12224
	Test & inspection	JB/T 9092

 

Notes: The sizes of valve connecting flange and butt-welding terminas can be designed according to customer's requirement.

 

 

 

Major parts material form

 

	No.	Accessory name	Material
			GB
	1	Spring	Inconel x-750
	2	Seat	25
	3	Sealing ring	PTFE
	4	O Ring	NBR
	5	Screw	35CrMo
	6	Gasket	PTFE & Graphite
	7	Put the valve stem*	1Cr13
	8	Gasket	PTFE & Graphite
	9	Bottom cover	25
	10	Valve body,end	25
	11	Gasket	PTFE & Graphite
	12	O Ring	NBR
	13	Ball*	A105+HCr
	14	Slip the bearing	PTFE
	15	Stem**	1Cr13
	16	Grease injection valve	Package
	17	Gasket	PTFE & stainless steel
	18	Packing case	25
	19	Press and cover	25
	20	O Ring	NBR
	21	Yoke	Q235A
	22	Key	45
	23	Connection set	45
	24	Driving	Package

 

The material of this part about the anti-sulphur type valve is GB (1Cr18Ni9+Ni.P),ASTM(A182-304+Ni.P)

The material of this part about the anti-sulphur type valve is GB (1Cr18Ni9),ASTM(A276-321)

Major parts of the valve series and materials of sealing surface differ according to actual working condition and customer's special requirement.

 

 

 

 

Main size of outside & weight

 

Model: (K)Q3(6、7、8、9)4(6)7F(Y、N、PPL)

 

Pressure	Nominal dimeter		Flange	Butt welding	Hand-operated		Worm gear worm			Air-operating and Fluid driving					Electric driving
	mm	in	L	L₁	M	M₀	B	B₀	Model	P	P₁	P₂	P₃	Model	H	H₁	H₀	Model
1.6MPa	50	2	179	216	107	230	-	-	-	270	174	89	181	AG09	-	-	-	-
	65	2 ¹/₂	191	241	125	400	-	-	-	380	248	148	257	AG13	-	-	-	-
	80	3	203	283	152	400	-	-	-	390	258	148	257	AG13	-	-	-	-
	100	4	229	305	178	650	-	-	-	480	322	287	287	AW13	-	-	-	-
	125	5	356	381	300	1050	-	-	-	555	395	287	287	AW13	-	-	-	-
	150	6	394	457	330	1050	-	-	-	665	457	378	378	AW17	554	337	200	SMC-04+H0BC
	200	8	457	521	-	-	400	600	B	805	595	378	378	AW17	600	382	200	SMC-04+H1BC
	250	10	533	559	-	-	495	600	B	840	630	378	378	AW17	652	435	200	SMC-04+H1BC
	300	12	610	635	-	-	580	800	C	975	728	530	530	AW20	761	480	280	SMC-03+H2BC
	350	14	686	762	-	-	625	800	C	1130	883	530	530	AW20	771	520	280	SMC-03+H2BC
	400	16	762	838	-	-	670	800	D	1460	1154	680	680	AW28	831	580	280	SMC-00+H3BC
	450	18	864	914	-	-	698	800	D	1530	1224	680	680	AW28	921	670	305	SMC-00+H3BC
	500	20	914	991	-	-	840|	800	D	1560	1294	680	680	AW28	943	770	305	SMC-0+H4BC
	600	24	1067	1143	-	-	1050	800	DA	1145	915	1455	1455	C1-355	1123	850	305	SMC-0+H4BC
	700	28	1245	1346	-	-	1100	800	DA	1160	930	1455	1455	C1-355	1218	945	400	SMC-1+H5BC
	800	32	1372	1524	-	-	1150	800	DB	1460	1100	1665	1665	C2-490	1328	1055	400	SMC-2+H6BC
	900	36	1524	1727	-	-	1230	800	DB	1540	1180	1665	1665	C2-490	1696	1130	460	SMC-2+H6BC
	1000	40	1753	1956	-	-	1320	800	DC	1630	1280	1960	1960	C3-600	1925	1240	460	SMC-3+H6BC

 

Pressure	Nominal dimeter		Flange	Butt welding	Hand-operated		Worm gear worm			Air-operating and Fluid driving					Electric driving
	mm	in	L	L₁	M	M₀	B	B₀	Model	P	P₁	P₂	P₃	Model	H	H₁	H₀	Model
2.5MPa 4.0MPa	50	2	216	216	107	230	-	-	-	270	210	148	181	AG13	-	-	-	-
	65	2 ¹/₂	241	241	125	400	-	-	-	380	250	148	257	AG13	-	-	-	-
	80	3	283	283	152	400	-	-	-	390	295	287	287	AW13	-	-	-	-
	100	4	305	305	178	650	-	-	-	455	325	287	287	AW13	-	-	-	-
	125	5	381	381	300	1050	-	-	-	580	390	378	378	AW17	-	-	-	-
	150	6	403	457	330	1050	-	-	-	595	390	378	378	AW17	554	337	200	SMC-04+H0BC
	200	8	502	521	-	-	400	600	B	595	530	378	378	AW17	600	382	200	SMC-04+H0BC
	250	10	568	559	-	-	495	600	B	736	700	530	530	AW20	652	435	200	SMC-04+H1BC
	300	12	648	635	-	-	580	800	C	945	750	530	530	AW20	761	480	280	SMC-04+H1BC
	350	14	762	762	-	-	625	800	C	995	885	680	680	AW28	771	520	280	SMC-03+H2BC
	400	16	838	838	-	-	670	800	D	1280	975	680	680	AW28	831	580	280	SMC-03+H2BC
	450	18	914	914	-	-	698	800	D	1480	1080	680	680	AW28	921	670	305	SMC-00+H3BC
	500	20	991	991	-	-	840	800	DA	1555	1155	1455	1455	C1-355	943	770	305	SMC-00+H3BC
	600	24	1143	1143	-	-	1050	800	DB	1380	930	1455	1455	C1-355	1123	850	305	SMC-0+H4BC
	700	28	1346	1346	-	-	1100	800	DC	1430	980	1665	1665	C2-490	1218	945	400	SMC-0+H4BC
	800	32	1524	1524	-	-	1150	800	DC	1750	1150	1665	1665	C2-490	1328	1055	400	SMC-1+H5BC
	900	36	1727	1727	-	-	1230	800	DD	1540	1180	1960	1960	C3-600	1696	1130	460	SMC-2+H6BC
	1000	40	2083	2083	-	-	1320	800	DD	1630	1280	1960	1960	C3-600	1925	1240	460	SMC-3+H6BC

 

Pressure	Nominal dimeter		Flange	Butt welding	Hand-operated		Worm gear worm			Air-operating and Fluid driving					Electric driving
	mm	in	L	L₁	M	M₀	B	B₀	Model	P	P₁	P₂	P₃	Model	H	H₁	H₀	Model
6.4MPa	50	2	292	292	110	230	-	-	-	270	210	150	257	AG13	-	-	-	-
	65	2 ¹/₂	330	330	155	400	-	-	-	-	-	-	-	-	-	-	-	-
	80	3	356	356	200	400	-	-	-	520	295	287	287	AW13	-	-	-	-
	100	4	406	406	-	-	235	600	B	640	325	287	287	AW13	-	-	-	-
	150	6	495	495	-	-	300	800	C	730	390	378	378	AW17	554	337	200	SMC-04+H1BC
	200	8	597	597	-	-	375	800	C	840	530	378	378	AW20	600	382	200	SMC-04+H1BC
	250	10	673	673	-	-	445	800	C	1015	700	530	530	AW20	652	480	200	SMC-03+H2BC
	300	12	762	762	-	-	515	800	D	1120	750	530	530	AW28	761	520	280	SMC-00+H3BC
	350	14	826	826	-	-	550	800	D	1225	885	680	680	AW28	771	594	280	SMC-00+H3BC
	400	16	902	902	-	-	615	800	DA	1480	1080	680	680	C1-355	831	632	280	SMC-0+H4BC
	450	18	978	978	-	-	750	800	DA	-	-	-	-	-	921	670	305	SMC-0+H4BC
	500	20	1054	1054	-	-	810	800	DB	1480	1080	680	680	C1-355	943	770	305	SMC-1+H5BC
	600	24	1232	1232	-	-	1050	800	DC	1365	915	1665	1665	C2-490	1123	850	305	SMC-3+H6BC
	700	28	1397	1397	-	-	1100	800	DD	1430	980	1665	1665	C2-490	1218	945	460	SMC-3+H7BC
	800	32	1651	1651	-	-	1180	800	DD	-	-	-	-	-	1328	1055	460	SMC-4+H7BC
	900	36	1880	1880	-	-	1275	800	DH	-	-	-	-	-	1815	1130	600	SMC-4+H7BC
	1000	40	2300	2300	-	-	1370	800	DH	-	-	-	-	-	1925	1240	600	SMC-5+H6BC

 

Pressure	Nominal dimeter		Flange	Butt welding	Hand-operated		Worm gear worm			Air-operating and Fluid driving					Electric driving
	mm	in	L	L₁	M	M₀	B	B₀	Model	P	P₁	P₂	P₃	Model	H	H₁	H₀	Model
10.0MPa	50	2	292	292	110	650	-	-	-	270	210	150	257	AG13	-	-	-	-
	65	2 ¹/₂	330	330	155	650	-	-	-	-	-	-	-	-	-	-	-	-
	80	3	356	356	200	650	-	-	-	520	295	287	287	AW13	-	-	-	-
	100	4	432	432	-	-	235	600	B	640	480	287	287	AW13	-	-	-	-
	150	6	559	559	-	-	300	800	C	730	520	378	378	AW17	600	382	200	SMC-04+H1BC
	200	8	660	660	-	-	375	800	C	840	595	530	530	AW20	652	480	200	SMC-03+H2BC
	250	10	787	787	-	-	445	800	D	1015	770	530	530	AW20	761	520	280	SMC-00+H3BC
	300	12	838	838	-	-	515	800	D	1120	810	680	680	AW28	771	594	280	SMC-00+H3BC
	350	14	889	889	-	-	550	800	DA	1225	1005	1445	1445	C1-355	831	632	280	SMC-0+H4BC
	400	16	991	991	-	-	615	800	DA	1375	1155	1445	1445	C1-355	921	670	305	SMC-0+H4BC
	450	18	1092	1092	-	-	750	800	DB	-	-	-	-	-	943	770	305	SMC-1+H5BC
	500	20	1194	1194	-	-	810	800	DC	1490	1210	1665	1665	C2-490	1123	850	305	SMC-3+H6BC
	600	24	1397	1397	-	-	1050	800	DD	1615	1335	1665	1665	C2-490	1218	945	400	SMC-3+HGBC
	700	28	1549	1549	-	-	1180	800	DH	1760	1410	1960	1960	C3-600	1328	1055	400	SMC-4+H7BC
	800	32	1778	1778	-	-	1250	800	DH	-	-	-	-	-	1458	1135	600	SMC-4+H7BC
	900	36	2083	2083	-	-	1315	800	DH	-	-	-	-	-	1855	1170	600	SMC-5+H7BC
	1000	40	2337	2337	-	-	1420	800	DH	-	-	-	-	-	1960	1285	600	SMC-5+H7BC

 

Pressure	Nominal dimeter		Flange	Butt welding	Hand-operated		Worm gear worm			Air-operating and Fluid driving					Electric driving
	mm	in	L	L₁	M	M₀	B	B₀	Model	P	P₁	P₂	P₃	Model	H	H₁	H₀	Model
16.0MPa	50	2	368	368	220	650	-	-	-	520	295	287	287	AW17	-	-	-	-
	65	2 ¹/₂	419	419	240	650	-	-	-	-	-	-	-	-	-	-	-	-
	80	3	381	381	260	650	-	-	-	730	520	378	378	AW17	-	-	-	-
	100	4	457	457	-	-	300	600	B	845	595	530	530	AW20	600	382	200	SMC-04+H1BC
	150	6	610	610	-	-	365	800	C	1015	770	530	530	AW20	761	520	280	SMC-00+H3BC
	200	8	737	737	-	-	395	800	C	1120	815	680	680	AW28	771	594	280	SMC-00+H3BC
	250	10	838	838	-	-	505	800	D	1225	1005	1445	1445	AW28	831	632	280	SMC-0+H4BC
	300	12	965	965	-	-	575	800	D	1375	1155	1445	1445	C1-355	921	670	305	SMC-0+H4BC
	350	14	1029	1029	-	-	675	800	DA	1490	1210	1665	1665	C1-355	943|	770	305	SMC-1+H5BC
	400	16	1130	1130	-	-	765	800	DB	1615	1335	1665	1665	C2-490	1123	850	305	SMC-3+H6BC
	450	18	1219	1219	-	-	870	800	DC	1760	1410	1960	1960	C2-490	1218	945	400	SMC-3+H6BC
	500	20	1321	1321	-	-	895	800	DD	1760	1410	1960	1960	C2-490	1328	1055	400	SMC-4+H7BC
	600	24	1549	1549	-	-	960	800	DH	1760	1410	1960	1960	C3-600	1458	1135	600	SMC-4+H7BC
	700	28	1780	1700	-	-	1210	800	DH	-	-	-	-	-	1904	1180	600	SMC-5+H7BC
	800	32	2050	1780	-	-	1290	1000	DJ	-	-	-	-	-	1984	1260	600	SMC-5+H7BC

 

Pressure	Nominal dimeter		Flange	Butt welding	Hand-operated		Worm gear worm			Air-operating and Fluid driving					Electric driving
	mm	in	L	L₁	M	M₀	B	B₀	Model	P	P₁	P₂	P₃	Model	H	H₁	H₀	Model
25.0MPa	50	2	368	368	220	650	220	600	A	520	295	287	287	AW17	-	-	-	-
	65	2 ¹/₂	419	419	245	650	245	600	A	730	520	378	378	AW17	-	-	-	-
	80	3	470	470	260	650	260	600	B	845	595	530	530	AW17	655	480	200	SMC-04+H1BC
	100	4	546	546	-	-	300	600	B	1015	770	530	530	AW20	765	520	280	SMC-04+H1BC
	150	6	705	705	-	-	365	800	C	1120	815	680	680	AW28	775	595	280	SMC-00+H3BC
	200	8	832	832	-	-	475	800	D	1125	1005	1445	1445	AW28	835	635	280	SMC-00+H3BC
	250	10	991	991	-	-	580	800	D	1375	1155	1445	1445	C1-355	925	670	305	SMC-0+H4BC
	300	12	1130	1130	-	-	700	800	DA	1490	1210	1665	1665	C1-355	945	770	305	SMC-0+H4BC
	350	14	1257	1257	-	-	765	800	DB	1615	1335	1665	1665	C2-490	1125	850	305	SMC-1+H5BC
	400	16	1384	1384	-	-	835	800	DC	1760	1410	1960	1960	C2-490	1220	945	400	SMC-3+H6BC

 

Note: The face to face dimension and connecting flange of a diameter reduced valve are per the non-reducing norms; the sizes of both valve height and actuator are reduced by one norm size.