Trunnion Ball Valve

Design and manufacturing: GB/T 12237
The structural length: GB/T12221
Connection forms: HG/T20592-20605 GB/T9112-9124
Inspection and test: GB/T13927
Caliber: DN50~DN1500 2″~60″
Pressure temperature level: GB/T12224
Drive mode: Manual, worm gear, pneumatic, electric
Pressure: PN1.6MPa~PN42.0MPa Class150~Class2500

Product Overview

A trunnion ball valve is a quarter-turn valve designed for efficient flow control in pipelines. Unlike floating ball valves, it features a fixed ball supported by trunnions at both ends, ensuring stability under high-pressure conditions. This design allows for precise operation with lower torque requirements, making it suitable for large-scale and high-pressure applications. The valve’s construction includes spring-loaded seats that maintain a tight seal across a range of pressures, enhancing reliability and performance. Trunnion ball valves are commonly used in industries such as oil and gas, petrochemicals, and power generation, where dependable shut-off and flow control are critical.

Product Features

Resistance to Sulfide Stress Cracking (SSC):
Trunnion ball valve wetted parts are selected in accordance with NACE MR0175 standards, including surface treatment, to ensure suitability for sour service environments.

Seal Material:
Sealing elements use alloy or metal materials, providing excellent sealing performance under high-temperature and high-pressure conditions.

Packing Ejection Prevention Design:
A blowout-proof packing box structure is adopted to prevent abnormal pressure buildup in the valve cavity from causing stem ejection. The inverted sealing structure ensures reliable packing tightness.

Wide Range of Applications:
Suitable for pipelines in chemical, petroleum, natural gas, refining, and steel industries handling corrosive or critical media.

Specification Parameters

◇Implementation of standards

1、Design and manufacture: GB/T 12237-1989; API 608

2、Inspection and test: GB/T 13927-1992; API 598

3、Flange connection: JB/T 79.1~4-1994; ASME/ANSI B 16.5

4、Structure length: GB/T 12221-1989; GB/T 15188.1-1994;
ASME/ANSIB 16.10

◇PerformanceSpecifications

Test Pressure Specifications (Unit: MPa)

Nominal Pressure (PN)	Max Working Pressure	Shell Test Pressure	Seal Test Pressure (Gas)	Seal Test Pressure (Water)	High Pressure Seal Test
1.6	1.6	2.4	0.6	1.6	1.76
2.5	2.5	3.8	0.6	2.5	2.75
4.0	4.0	6.0	0.6	4.0	4.4
6.4	6.4	9.6	0.6	6.0	7.1
10.0	10.0	15.0	0.6	10.0	11.0
16.0	16.0	24.0	0.6	16.0	17.6
20.0	20.0	30.0	0.6	20.0	22.0
25.0	25.0	37.5	0.6	25.0	27.5
Class 150	2.0	3.0	0.6	2.0	2.2
Class 300	5.0	7.5	0.6	5.0	5.5
Class 600	10.0	15.0	0.6	10.0	11.0
Class 900	15.0	22.5	0.6	15.0	16.5
Class 1500	25.0	37.5	0.6	25.0	27.5

Terms of Use

Shell Material	Seat Material	Applicable Medium	Applicable Temperature
Carbon Steel (C-type)	PTFE	Water, steam, oil, etc.	≤150°C
Stainless Steel	PTFE	Water, steam, oil, etc.	≤425°C
Chrome-Ti-type (Ni-Ti steel)	PTFE	Nitric acid	≤150°C
Chrome-Ni-Mo-Ti stainless steel	PTFE	Acetic acid	≤200°C
Cr–Mo Steel I–V	Hard alloy	Steam, oil, high-temp. gas, etc.	≤550°C

◆ Main Components Material

Component	Standard	Material
Body, Bonnet, Packing Box	GB	25	1Cr18Ni9Ti	0Cr18Ni12Mo2Ti	15Cr1Mo1V
Body, Bonnet, Packing Box	ASTM	1025	304	316	F22a
Ball	GB	2Cr13 / Special surface treatment	1Cr18Ni9Ti / Special surface treatment	0Cr18Ni12Mo2Ti / Special surface treatment	25Cr2Mo1V / Special surface treatment
Ball	ASTM	420	304 + HF	316 + HF	F22a + HF
Stem, Fixed Axis	GB	2Cr13	1Cr18Ni9Ti	0Cr18Ni12Mo2Ti	25Cr2Mo1V
Stem, Fixed Axis	ASTM	420	304	316	F22a
Seat	GB	PTFE / 2Cr13	PTFE / 1Cr18Ni9Ti	PTFE / 0Cr18Ni12Mo2Ti	PTFE / 25Cr2Mo1V
Seat	ASTM	PTFE / 420	PTFE / 304	PTFE / 316	PTFE / F22a
Packing	GB	PTFE / Flexible Graphite	PTFE / Flexible Graphite	PTFE / Flexible Graphite	PTFE / Flexible Graphite
Packing	ASTM	PTFE / Flexible Graphite	PTFE / Flexible Graphite	PTFE / Flexible Graphite	PTFE / Flexible Graphite
Bolt	GB	35	0Cr18Ni9	0Cr18Ni9	15Cr1Mo1V
Bolt	ASTM	A193 B7	A320–B8	A320–B8	A193 B16
Nut	GB	45	1Cr13	1Cr13	20CrMo
Nut	ASTM	A194 2H	A194–8	A194–8	A194–4

Table: Main Connection Dimensions (Unit: mm)

PN	DN	L	D	K	d	Y	b	Z–Φd	Ws	Hs	Hw	Hd
1.6MPa	40	165	150	110	85	–	16	4–Φ18	230	135	–	–
	50	203	165	125	100	–	16	4–Φ18	260	150	–	–
	65	222	185	145	120	–	18	4–Φ18	350	180	–	–
	80	241	200	160	135	–	20	8–Φ18	500	195	–	–
	100	305	220	180	155	–	20	8–Φ18	650	245	310	420
	125	356	250	210	185	–	22	8–Φ18	800	270	330	440
	150	394	285	240	210	–	24	8–Φ23	1000	295	390	470
	200	457	340	295	265	–	26	12–Φ23	–	–	440	510
	250	533	405	355	320	–	30	12–Φ25	–	–	490	560
	300	610	460	410	375	–	30	12–Φ25	–	–	530	600
	350	686	520	470	435	–	34	16–Φ25	–	–	620	670
	400	762	580	525	485	–	36	16–Φ30	–	–	675	720
	450	864	640	585	545	–	40	20–Φ30	–	–	740	790
	500	914	715	650	608	–	44	20–Φ34	–	–	825	870
	600	1067	840	770	718	–	48	20–Φ41	–	–	920	960

PN	DN	L	D	K	d	Y	b	Z–Φd	Ws	Hs	Hw	Hd
2.5MPa	40	190	150	110	85	–	18	4–Φ18	230	135	–	–
	50	216	165	125	100	–	20	4–Φ18	260	150	–	–
	65	241	185	145	120	–	22	8–Φ18	350	180	–	–
	80	283	200	160	135	–	22	8–Φ18	500	195	–	–
	100	305	230	190	160	–	24	8–Φ23	650	245	310	420
	125	381	270	220	188	–	28	8–Φ25	800	270	330	440
	150	403	300	250	218	–	30	8–Φ25	1000	295	390	470
	200	502	360	310	278	–	34	12–Φ25	–	–	440	510
	250	568	425	370	332	–	36	12–Φ30	–	–	490	560
	300	648	485	430	390	–	40	16–Φ30	–	–	530	600
	350	762	555	490	448	–	44	16–Φ34	–	–	620	670
	400	838	620	550	505	–	48	16–Φ34	–	–	675	720
	450	914	670	600	555	–	50	20–Φ34	–	–	740	790
	500	991	730	660	610	–	52	20–Φ41	–	–	825	870
	600	1143	845	770	718	–	56	20–Φ41	–	–	920	960

(PN)	(DN)	L	D	K	d	Y	b	z–Φd	Ws	Hs	Hw	Hd
4.0MPa	40	190	150	110	85	76	18	4–Φ18	230	135	–	–
	50	216	165	125	100	88	20	4–Φ18	260	150	–	–
	65	241	185	145	120	110	22	8–Φ18	350	180	–	–
	80	283	200	160	135	121	22	8–Φ18	500	195	–	–
	100	305	235	190	160	150	24	8–Φ23	800	250	320	430
	125	381	270	220	188	176	28	8–Φ25	1000	280	340	450
	150	403	300	250	218	204	30	8–Φ25	1200	300	405	480
	200	502	375	320	282	260	38	12–Φ30	–	–	450	530
	250	568	450	385	345	313	42	12–Φ34	–	–	505	590
	300	648	515	450	408	364	46	16–Φ34	–	–	545	620
	350	762	580	510	465	422	52	16–Φ34	–	–	640	690
	400	838	660	585	535	474	58	16–Φ41	–	–	690	740
	450	914	685	610	560	524	60	20–Φ41	–	–	760	810
	500	991	755	670	612	576	62	20–Φ48	–	–	850	900

PN	DN	L	D	K	d	Y	b	z–Φd	Ws	Hs	Hw	Hd
6.4MPa	40	241	170	125	95	76	24	4–Φ23	260	140	–	–
	50	292	180	135	105	88	26	4–Φ23	–	160	–	–
	65	330	205	160	130	110	28	8–Φ23	350	180	–	–
	80	356	215	170	140	121	30	8–Φ23	500	220	–	–
	100	406	250	200	168	150	32	8–Φ25	800	250	320	430
	125	400	295	240	202	176	36	8–Φ30	1000	295	340	450
	150	495	345	280	240	204	38	8–Φ34	1200	340	405	480
	200	597	405	345	300	260	44	12–Φ34	–	–	450	530
	250	673	470	400	352	313	48	12–Φ41	–	–	505	590
	300	762	530	460	412	364	54	16–Φ41	–	–	545	620
	350	826	600	525	475	422	60	16–Φ41	–	–	640	690
	400	902	670	585	525	474	66	16–Φ48	–	–	690	740
	500	1054	800	705	640	576	70	20–Φ54	–	–	760	810

PN	DN	L	D	K	d	Y	b	z–Φd	Ws	Hs	Hw	Hd
PN 10.0MPa	40	241	170	125	95	76	26	4–Φ23	260	160	–	–
	50	292	195	145	112	88	28	4–Φ25	350	180	–	–
	65	330	230	170	138	110	32	8–Φ25	500	200	–	–
	80	356	230	180	148	121	34	8–Φ25	800	240	310	410
	100	457	280	210	172	150	38	8–Φ30	1000	270	340	450
	125	508	315	250	210	176	42	8–Φ34	1200	320	360	505
	150	559	355	290	250	204	46	12–Φ34	–	–	425	555
	200	660	430	360	312	260	54	12–Φ41	–	–	470	625
	250	838	505	400	382	313	60	12–Φ41	–	–	525	645
	300	838	585	500	442	364	70	16–Φ48	–	–	565	715
	350	889	655	560	498	422	76	16–Φ54	–	–	670	770
	400	991	715	620	558	474	80	16–Φ54	–	–	720	840

PN	DN	L	D	K	d	Y	b	z–Φd	Ws	Hs	Hw	Hd
16.0MPa	40	305	175	125	92	76	32	4–Φ27	350	160	–	–
	50	368	215	165	132	88	36	8–Φ25	500	180	–	–
	65	419	245	190	152	110	44	8–Φ30	800	200	–	–
	80	381	260	200	160	121	46	8–Φ30	1000	240	310	410
	100	457	300	240	200	150	48	8–Φ34	1200	270	340	450
	125	559	355	285	238	175	60	8–Φ41	–	–	360	505
	150	610	390	318	270	204	66	12–Φ41	–	–	425	560
	200	737	480	400	345	260	78	12–Φ48	–	–	530	630
	250	838	580	485	425	313	88	16–Φ54	–	–	570	720
	300	965	665	570	510	364	100	16–Φ54	–	–	680	780

PN	DN	L	D	K	d	Y	b	z–Φd	Ws	Hs	Hw	Hd
20.0MPa	40	305	170	124	90	56	34	4–Φ27	500	180	–	–
	50	368	210	160	128	70	40	8–Φ25	650	200	–	–
	65	419	260	200	165	97	48	8–Φ30	800	220	–	–
	80	470	290	230	190	116	54	8–Φ34	1000	260	320	420
	100	546	360	292	245	138	66	8–Φ41	1200	290	360	470
	125	673	385	318	271	170	76	12–Φ41	–	–	380	530
	150	705	440	360	305	190	82	12–Φ48	–	–	440	580
	200	832	550	440	380	245	92	12–Φ54	–	–	550	650

PN	DN	L	D	K	d	Y	b	z–Φd	Ws	Hs	Hw	Hd
25.0MPa	40	368	185	125	92	68.28	32	4–Φ29.5	500	180	–	–
	50	368	215	165	124	95.25	38.5	8–Φ29.5	650	200	–	–
	65	419	240	190.5	137	107.95	41.5	8–Φ29.5	800	220	–	–
	80	470	265	203	168	136.52	48	8–Φ32.5	1000	260	320	420
	100	546	310	241.5	194	161.92	54	8–Φ35	1200	290	360	470
	125	673	375	292	229	193.68	73.5	8–Φ42	–	–	380	530
	150	705	395	317.5	248	211.12	83	12–Φ39	–	–	430	580
	200	832	485	393.5	318	269.88	92	12–Φ45	–	–	550	650

Main Connection Dimensions (Class 150)

PN	DN	L	D	K	d	Y	b	z–Φd	Ws	Hs	Hw	Hd
Class 150	1 1/2”	165	127	98.5	73	–	15	4–Φ15	230	135	–	–
	2”	178	152	120.5	92	–	16	4–Φ19	260	150	–	–
	2 1/2”	190	178	139.5	105	–	18	4–Φ19	350	180	–	–
	3”	203	190	152.5	127	–	19	4–Φ19	500	195	–	–
	4”	229	229	190.5	157	–	24	8–Φ19	650	245	310	420
	5”	356	254	216	186	–	24	8–Φ22	800	270	330	440
	6”	394	279	241.5	216	–	26	8–Φ22	1000	295	390	470
	8”	457	343	298.5	270	–	29	8–Φ22	–	–	440	510
	10”	533	406	362	324	–	31	12–Φ25	–	–	490	560
	12”	610	483	432	381	–	32	12–Φ25	–	–	530	600
	14”	686	533	476	413	–	35	12–Φ29	–	–	620	670
	16”	762	597	540	470	–	37	16–Φ29	–	–	675	720
	18”	864	635	578	533	–	40	16–Φ32	–	–	740	790
	20”	914	699	635	584	–	43	20–Φ32	–	–	825	870
	24”	1067	813	749.5	692	–	48	20–Φ35	–	–	920	960

PN	DN	L	D	K	d	Y	b	z–Φd	Ws	Hs	Hw	Hd
Class 300	1 1/2”	190	156	114.5	73	–	21	4–Φ22	230	135	–	–
	2”	216	165	127	92	–	23	8–Φ19	260	150	–	–
	2 1/2”	241	190	149	105	–	26	8–Φ22	350	180	–	–
	3”	283	210	168.5	127	–	29	8–Φ22	500	195	–	–
	4”	305	254	200	157	–	32	8–Φ22	800	250	320	430
	5”	356	279	235	186	–	35	8–Φ22	1000	280	340	450
	6”	403	318	270	216	–	37	12–Φ22	1200	300	405	480
	8”	502	381	330	270	–	42	12–Φ25	–	–	450	530
	10”	568	445	387.5	324	–	48	16–Φ29	–	–	505	590
	12”	648	521	451	381	–	51	16–Φ32	–	–	545	620
	14”	762	584	514.5	413	–	54	20–Φ32	–	–	640	690
	16”	838	648	571.5	470	–	58	20–Φ35	–	–	690	740
	18”	914	711	628.5	533	–	61	24–Φ35	–	–	760	810
	20”	991	775	686	584	–	64	24–Φ35	–	–	850	900

PN	DN	L	D	K	d	Y	b	z–Φd	Ws	Hs	Hw	Hd
Class 600	1 1/2”	241	156	114.5	90	68.263	23	4–Φ22	260	160	–	–
	2”	292	165	127	108	82.550	26	8–Φ19	350	180	–	–
	2 1/2”	330	190	149	127	101.600	29	8–Φ22	500	200	–	–
	3”	356	216	168	146	123.825	32	8–Φ22	800	240	310	410
	4”	432	273	216	175	149.225	38	8–Φ25	1000	270	340	450
	5”	508	330	266.5	210	180.975	45	8–Φ29	1200	320	360	505
	6”	559	356	292	241	211.138	48	12–Φ29	–	–	425	555
	8”	660	419	349	302	269.876	56	12–Φ32	–	–	470	625
	10”	787	508	432	356	323.851	64	16–Φ35	–	–	525	645
	12”	838	559	489	413	381.001	67	20–Φ35	–	–	565	715
	14”	889	603	527	457	419.101	70	20–Φ38	–	–	670	770
	16”	991	686	603	508	469.901	77	20–Φ41	–	–	720	840
	18”	1092	743	654	575	533.401	83	20–Φ44	–	–	780	920
	20”	1194	813	724	635	584.201	89	24–Φ45	–	–	850	995

PN	DN	L	D	K	d	Y	b	z–Φd	Ws	Hs	Hw	Hd
Class 900	1 1/2”	305	178	123.8	73	32.0	29	4–Φ29	350	160	–	–
	2”	368	216	165.1	92	–	38.5	8–Φ26	500	180	–	–
	2 1/2”	394	244	190.5	105	–	41.5	8–Φ29	800	200	–	–
	3”	381	241	190.5	156	123.82	38.5	8–Φ26	1000	240	310	410
	4”	457	292	234.9	181	149.22	44.5	8–Φ32	1200	270	340	450
	5”	559	349	279.4	216	180.98	51.0	8–Φ35	–	–	360	505
	6”	610	381	317.5	241	211.12	56.0	12–Φ32	–	–	425	560
	8”	737	470	393.7	308	269.88	63.5	12–Φ39	–	–	530	630
	10”	838	545	469.9	362	323.85	70.0	16–Φ39	–	–	570	720
	12”	965	610	533.4	419	381.00	79.5	20–Φ39	–	–	680	780
	14”	1029	640	558.8	467	419.10	85.0	20–Φ45	–	–	800	905
	16”	1130	705	615.9	524	469.90	89.0	20–Φ45	–	–	910	1010

PN	DN	L	D	K	d	Y	b	z–Φd	Ws	Hs	Hw	Hd
Class 1500	1 1/2”	305	178	123.8	92	68.28	32.0	4–Φ29	500	180	–	–
	2”	368	216	165.1	124	95.25	38.5	8–Φ26	650	200	–	–
	2 1/2”	419	244	190.5	137	107.95	41.5	8–Φ29	800	220	–	–
	3”	470	267	203.2	168	136.52	48.0	8–Φ35	1000	260	320	420
	4”	546	311	241.3	194	161.92	54.0	8–Φ35	1200	290	360	470
	5”	673	292	292.1	229	193.68	73.0	8–Φ42	–	–	380	530
	6”	705	394	317.5	248	211.12	83.0	12–Φ39	–	–	440	580
	8”	832	483	393.7	318	269.88	92.9	16–Φ45	–	–	550	650

Specification Applications

Oil & Gas Pipelines – Mainline isolation for crude oil, natural gas, and refined products in high-pressure and large-diameter pipeline systems.
Upstream, Midstream & Downstream Facilities – Used in wellheads, manifolds, compressor stations, and processing units requiring low operating torque and reliable sealing.
Petrochemical & Refining Plants – Suitable for high-pressure, high-temperature hydrocarbon and chemical process lines.
LNG & Gas Processing – Ideal for gas isolation, including low-temperature and high-pressure LNG applications when properly specified.
Power Generation Systems – Applied in thermal and combined-cycle power plants for safe and stable flow isolation.
Offshore & Subsea Installations – Preferred for offshore platforms and subsea pipelines due to ball support design and long-term operational stability.

Valve Actuation

Process Optimization

Precision Engineering

Pipeline Solutions

Industrial Valves

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