API 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

API Trunnion Ball Valve

Design and Manufacture: API 6D、ASME B16.34(BS5351)、API608、MSS-SP-72

Face to Face Dimension: ASME B16.10、API 6D

Flange Connection Dimension: ASME B16.5

BW Connection Dimension: ASME B16.25

Test and Inspection: API 598、API 6D

Fire-safe Design: API 607

 

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	-	-	-	-	-	-	-	-	-	-

 

 

 

Typical Drawing of Trunnion Ball Valve and Parts Composition

 

 

 

 

Parts and Material List

 

Parts No.	Parts name	Materials
		WCB/A105+HCr(ENP)	WCB/304	WCB/316	CF8	CF8M
1	Body	ASTM A216WCB	ASTM A216WCB	ASTM A216WCB	ASTM A351 CF8	ASTM A351 CF8M
2	Nut	ASTM A1942H	ASTM A1942H	ASTM A1942H	ASTM A1942H	ASTM A1942H
3	Bolting	ASTM A193 B7	ASTM A193 B7	ASTM A193 B7	ASTM A193 B7	ASTM A193 B7
4	O ring	Viton	Viton	Viton	Viton	Viton
5	Stem bearing	Metal backed PTFE	Metal backed PTFE	Metal backed PTFE	Metal backed PTFE	Metal backed PTFE
6	Gasket	ASTM A182 F6a	ASTM A182 F304	ASTM A182 F316	ASTM A182 F304	ASTM A182 F316
7	Stem	ASTM A182 F6a	ASTM A182 F304	ASTM A182 F316	ASTM A182 F304	ASTM A182 F316
8	Key	Carbon steel	Carbon steel	Carbon steel	Stainless steel	Stainless steel
9	Key	Carbon steel	Carbon steel	Carbon steel	Stainless steel	Stainless steel
10	O ring	Viton	Viton	Viton	Viton	Viton
11	Gasket	PTFE	PTFE	PTFE	PTFE	PTFE
12	Cover	ASTM A105	ASTM A105	ASTM A105	ASTM A182 F304	ASTM A182 F316
13	Capscrew	ASTM A193 B7	ASTM A193 B7	ASTM A193 B7	ASTM A193 B8	ASTM A193 B8M
14	O ring	Viton	Viton	Viton	Viton	Viton
15	Gear	Carbon steel	Carbon steel	Carbon steel	Carbon steel	Carbon steel
16	Ball	A105+HCr(ENP)	ASTMA182 F304	ASTM A182 F316	ASTM A182 F304	ASTM A182 F316
17	Seat	Reinforced PTFE	Reinforced PTFE	Reinforced PTFE	Reinforced PTFE	Reinforced PTFE
18	O ring	Viton	Viton	Viton	Viton	Viton
19	Seat retainer	ASTM A105	ASTM A105	ASTM A105	ASTM A182 F304	ASTMA182 F316
20	Spring	SS304 or Inconel 750	SS304 or Inconel 750	SS316 or Inconel 750	SS304 or Inconel 750	SS316 or Inconel 750
21	Gasket	Viton or PTFE or Graphite	Viton or PTFE or Graphite	Viton or PTFE or Graphite	Viton or PTFEor Graphite	Viton or PTFE or Graphite
22	Body bolting	ASTM A193 B7	ASTM A193 B7	ASTM A193 B7	ASTM A193 B8	ASTM A193 B8M
23	Body nut	ASTM A194 2H	ASTM A194 2H	ASTM A194 2H	ASTM A194 8	ASTM A194 8M
24	Closure	ASTM A216 WCB	ASTM A216 WCB	ASTM A216 WCB	ASTM A351 CF8	ASTM A351 CF8M
25	Lower trunnion	ASTM A182 F6a	ASTM A182 F304	ASTM A182 F316	ASTM A182 F304	ASTM A182 F316
26	O ring	Viton	Viton	Viton	Viton	Viton
27	Gasket	ASTM A182 F6a	ASTM A182 F304	ASTM A182 F316	ASTM A182 F304	ASTM A182 F316
28	Lower cover	ASTM A105	ASTM A105	ASTM A105	ASTM A182 F304	ASTM A182 F316
29	Capscrew	ASTM A193 B7	ASTM A193 B7	ASTM A193 B7	ASTM A193 B8	ASTM A193 B8M

 

Note: The chart above only lists out some common composition of steel ball valve parts. We may provide other different parts material composition according to the customer's request or the actual valve working condition.

 

 

 

 

 

 

Main size of outside & weight

 

Pressure stage	Size		Dimensions (mm)												Weight (kg)
	DN	NPS	L		d	D	D₁	D₂	b	f	Z-Φdo	H	H₁	W
			RF	BW
Class 150 PN20	100	4	229	305	102	229	190.5	157	24	1.6	8-19	330	135	300	60
	125	5	356	381	127	254	216	186	24	1.6	8-22	360	165	300	80
	150	6	394	457	152	279	241.5	216	25.5	1.6	8-22	392	193	300	101
	200	8	457	521	203	343	298.5	270	29	1.6	8-22	492	240	300	166
	250	10	533	559	254	406	362	324	31	1.6	12-25	548	293	300	283
	300	12	610	635	305	483	432	381	32	1.6	12-25	688	340	400	463
	350	14	686	762	337	533	476	413	35	1.6	12-29	722	372	400	622
	400	16	762	838	387	597	540	470	37	1.6	16-29	722	415	400	900
	450	18	864	914	438	635	578	533	40	1.6	19-32	804	462	500	1150
	500	20	914	991	489	699	635	584	43	1.6	20-32	952	511	600	1360
	600	24	1067	1143	591	813	749.5	692	48	1.6	20-35	1154	601	750	2514
	650	26	1143	1245	633	786	744.5	711	40	1.6	36-22	1300	700	750	3200
	700	28	1245	1346	684	837	795.5	762	43	1.6	40-22	1550	780	750	4000
	750	30	1295	1397	735	887	846	813	43	1.6	44-22	1650	830	750	4800
	800	32	1372	1524	779	941	900	864	44	1.6	48-22	1740	870	750	5800
	900	36	1524	1727	874	1057	1009.5	972	51	1.6	44-26	1950	970	750	8000
Class 300 PN50	100	4	305	305	102	254	200	157	32	1.6	8-22	340	140	300	70
	125	5	381	381	127	279	235	186	35	1.6	8-22	370	170	300	95
	150	6	403	457	152	318	270	216	37	1.6	12-22	402	192	300	128
	200	8	502	521	203	381	330	270	41.5	1.6	12-25	498	246	300	234
	250	10	568	559	254	445	387.5	324	48	1.6	16-29	655	303	400	403
	300	12	648	635	305	521	451	381	51	1.6	16-32	658	348	400	602
	350	14	762	762	337	584	514.5	413	54	1.6	20-32	686	378	400	803
	400	16	838	838	387	648	571.5	470	58	1.6	20-35	880	429	600	1273
	450	18	914	914	438	711	628.5	533	61	1.6	24-35	1050	518	750	1450
	500	20	991	991	489	775	686	584	64	1.6	24-35	1110	540	750	1700
	600	24	1143	1143	591	914	813	692	70	1.6	24-41	1400	650	750	3100
	650	26	1245	1245	633	867	803.5	737	87	1.6	32-35.5	1500	750	750	4500
	700	28	1346	1346	684	921	857	787	87	1.6	36-35.5	1600	800	750	6000
	750	30	1397	1397	735	991	921	845	92	1.6	36-39	1720	860	750	7500
	800	32	1524	1524	779	1054	978	902	102	1.6	32-42	1800	900	750	9000
	900	36	1727	1727	874	1172	1089	1010	102	1.6	32-45	2200	1020	600	12000

 

Pressure stage	Size		Dimensions (mm)													Weight (kg)
	DN	NPS	L			d	D	D₁	D₂	b	f	Z-Φdo	H	H₁	W
			RF	RTJ	BW
Class 600 PN110	50	2	292	295	292	49	165	127	92	26	6.4	8-19	240	94	300	32
	65	2 ¹/₂	330	333	330	62	190	149	105	29	6.4	8-22	290	115	300	47
	80	3	356	359	356	74	210	168	127	32	6.4	8-22	340	136	300	68
	100	4	432	435	432	100	273	216	157	38	6.4	8-25	358	152	300	106
	125	5	508	511	508	127	330	266.5	186	45	6.4	8-29	400	180	300	170
	150	6	559	562	559	150	356	292	216	48	6.4	12-29	445	209	400	241
	200	8	660	664	660	201	419	349	270	56	6.4	12-32	498	263	400	444
	250	10	787	791	787	252	508	432	324	64	6.4	16-35	653	312	400	668
	300	12	838	841	838	303	559	489	381	67	6.4	20-35	665	354	500	1050
	350	14	889	892	889	334	603	527	413	70	6.4	20-38	738	389	600	1317
	400	16	991	994	991	385	686	603	470	77	6.4	20-41	920	440	750	1800
	450	18	1092	1095	1092	436	743	654	533	83	6.4	20-44	1100	530	750	2400
	500	20	1194	1200	1194	487	813	724	584	89	6.4	24-44	1200	560	750	3000
	600	24	1397	1407	1397	538	940	838	692	102	6.4	24-52	1480	670	750	5400
Class 900 PN150	50	2	368	371	368	49	216	165.1	92	38.5	6.4	8-26	250	98	300	45
	65	2 ¹/₂	419	422	419	62	244	190.5	105	41.5	6.4	8-29	300	120	300	55
	80	3	381	384	381	74	241	190.5	127	38.5	6.4	8-26	345	140	300	94
	100	4	457	460	457	100	292	234.9	157	44.5	6.4	8-32	415	162	300	141
	125	5	559	562	559	125	349	279.4	186	51	6.4	8-35	446	188	300	230
	150	6	610	613	610	150	381	317.5	216	56	6.4	12-32	477	213	400	325
	200	8	737	740	737	201	470	393.7	270	63.5	6.4	12-39	520	270	400	580
	250	10	838	841	838	252	545	469.9	324	70	6.4	16-39	628	322	400	850
	300	12	965	968	965	305	610	533.4	381	79.5	6.4	20-39	680	360	500	1330
	350	14	1029	1038	1029	322	640	558.8	413	86	6.4	20-42	750	400	600	1660
	400	16	1130	1140	1130	373	705	615.9	470	89	6.4	20-45	940	460	750	2280
Class 1500 PN260	40	1 ¹/₂	305	305	305	38	178	123.8	73	32	6.4	4-29	280	100	300	44
	50	2	368	371	368	49	216	165.1	92	38.5	6.4	8-26	320	113	300	67
	65	2 ¹/₂	419	422	419	62	244	190.5	105	41.5	6.4	8-29	340	125	300	80
	80	3	470	473	470	74	267	203.2	127	48	6.4	8-32	385	138	300	130
	100	4	546	549	546	100	311	241.3	157	54	6.4	8-35	415	171	300	192
	125	5	673	676	673	120	375	292.1	186	73.5	6.4	8-42	480	200	400	335
	150	6	705	711	705	144	394	317.5	216	83	6.4	12-39	580	222	400	475
	200	8	832	841	832	192	483	393.7	270	92	6.4	12-45	584	280	400	820
	250	10	991	1000	991	239	585	482.6	324	108	6.4	12-51	650	340	500	1320
	300	12	1130	1146	1130	287	675	571.5	381	124	6.4	16-54	700	370	600	2050
Class 2500 PN420	40	1 ¹/₂	384	387	384	38	203	146	73	44.5	6.4	4-32	290	105	300	72
	50	2	451	454	451	42	235	171.4	92	51	6.4	8-29	320	120	300	104
	65	2 ¹/₂	508	514	508	52	267	196.8	105	57.5	6.4	8-32	350	130	300	140
	80	3	578	584	578	62	305	228.6	127	67	6.4	8-35	400	150	300	202
	100	4	673	683	673	87	356	273	157	76.5	6.4	85-42	425	180	400	305
	125	5	794	807	794	100	419	323.8	186	92.5	6.4	8-48	500	210	400	530
	150	6	914	927	914	131	483	368.3	216	108	6.4	8-54	590	230	500	760
	200	8	1022	1038	1022	179	550	438.1	270	127	6.4	12-54	610	290	500	1200
	250	10	1270	1292	1270	223	675	539.7	324	165.5	6.4	12-67	660	350	600	2080

 

Notes: 1. RF indicates rased flange, RFJ means ring joint flange,and BW is butt welding ends conneciton.

2.Flange dimensions of the above table for valves of NPS<24 conforms to ASME B16.5.

3.For valve of NPS >26, the flange dimensions of above table conforms to B series of ASME B16.47 and API 605. As required by customers, flange dimensions may also conform to A series of ASME B16.47 and MSS-SP-44.

 

 

 

 

Forged Steel Trunnion Ball Valve

 

Our company manufactures in general trunnion ball valve of casted steel valve body. However, if required by customers, forged steel valve body is also available, of which the flange dimensions and face to face dimensions are the same as that of cast steel trunnion ball valve.

 

 

 

Ball Valve with Reduced Bore

 

Except for full bore ball valves, our company manufactures also the ball valve with reduced bore to meet different requirement of customers, which not only lowers the cost and pricing, but also satisfies the special requirement of customers.

 

 

 

Main size of outside & weight

 

Size		Pressure stage
		Class 150, PN20				Class 300, PN50				Class 600, PN10
DN	NPS	Dimensions (mm)
		L	d	d₁	H	L	d	d₁	H	L		d	d₁	H
										RF	RJ
125	5	356	102	127	330	381	102	127	340	508	511	102	127	358
150	6	394	152	152	330	403	127	152	340	559	562	127	152	358
200	8	457	203	203	392	502	152	203	402	660	664	152	200	445
250	10	533	254	254	492	568	203	254	498	787	791	200	248	498
300	12	610	305	305	548	648	254	305	655	838	841	248	298	653
350	14	686	305	337	688	762	305	337	658	889	892	298	327	665
400	16	762	337	387	688	838	337	387	658	991	994	327	375	665
450	18	864	387	438	722	914	387	438	686	1092	1095	375	419	738
500	20	914	438	489	750	991	438	489	880	1194	1200	419	464	920
600	24	1067	540	591	952	1143	540	591	110	1397	1407	511	559	1200
650	26	1143	589	633	1050	1245	589	633	1250	-	-	-	-	-
700	28	1245	633	684	1154	1346	633	684	1400	-	-	-	-	-
750	30	1295	684	735	1300	1397	684	735	1500	-	-	-	-	-
800	32	1372	735	779	1550	1524	735	779	1600	-	-	-	-	-
900	36	1524	830	874	1740	1727	830	874	1800	-	-	-	-	-

 

Size		Class 900, PN50					Class 1500, PN260					Class 2500, PN420
DN	NPS	L		d	d₁	H	L		d	d₁	H	L		d	d₁	H
		RF	RJ				RF	RJ				RF	RJ
65	2 ¹/₂	419	422	47	57	250	419	422	47	57	320	508	514	42	52	320
80	3	381	384	57	73	300	470	473	57	70	340	578	584	52	62	350
100	4	457	460	73	98	345	546	549	70	92	385	673	683	62	87	400
125	5	559	562	98	121	415	673	576	92	111	415	794	807	87	100	425
150	6	610	613	21	146	415	705	711	100	144	480	914	927	87	131	500
200	8	737	740	146	190	477	832	841	144	192	580	1022	1038	131	179	590
250	10	838	841	190	234	520	991	1000	192	239	584	1270	1292	179	223	610
300	12	965	968	234	282	628	1130	1146	239	287	650	1422	1445	223	265	660
350	14	1029	1038	303	-	680	-	-	-	-	-	-	-	-	-	-
400	16	1130	1140	322	-	680	-	-	-	-	-	-	-	-	-	-

 

Note: Flange dimensions of ball valve with reduced bore are the same as that of full bore ball valve.