Name:

Special Ball Valve for Gas

Category：

Ball valve

Remark:

Double blocking and discharging function: The fixed ball valve adopts the spring to preload the floating valve seat. When the valve is fully open or fully closed, the valve seat on the upstream and downstream sides block the fluid and the reed of the valve body cavity is drained through the discharge valve.

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Product Details

Product Description

1. Double blocking and discharging function: The fixed ball valve adopts the spring to preload the floating valve seat. When the valve is fully open or fully closed, the valve seat on the upstream and downstream sides block the fluid and the reed of the valve body cavity is drained through the discharge valve .

2. Automatic pressure relief function: the valve body cavity to stay the medium temperature rise caused abnormal boost, without going through the safety valve, and the valve seat function can automatically pressure relief, which to ensure the safety of the valve in the delivery of liquid medium Sex is very important.

3. Fire safety structure: the valve has a fire safety function, its design, manufacturing are to follow the API 607 and API 6FA specifications.

Product Range

Fixed ball valve for Class150 ~ Class1500, PN16 ~ PN100, JIS 10K ~ JIS 20K of the various pipe, temperature: -196 ~ 350 ℃, used to cut off or connect the media in the pipeline, the choice of different materials, can be They are widely used in petroleum refining, long-distance pipeline, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steel and other fields for transporting water, steam, oil products, nitric acid, acetic acid, oxidizing media and urea. Fixed ball valve drive for worm gear drive, manual, pneumatic or electric. Fixed ball valves generally use flange connection, but also can be welded connection.

Principle of natural gas

The closure of natural gas ball valve is a ball, the ball around the valve body for rotation to achieve open, close a valve. Ball valve is mainly used in the pipeline to cut off, distribute and change the flow direction of the medium.

Floating ball valve with a special design double bevel elastic ring, effectively reducing the friction between the ball and the seal, reducing the operating torque. When the medium pressure is small, the contact area of the seal ring and the sphere is small, so a larger seal pressure ratio ensures a reliable seal. When the media pressure is large, the contact area of the seal ring and the ductile iron also increases accordingly. Therefore, the ring can withstand greater thrust without damage, to ensure reliable sealing.

Characteristics of natural gas

Design Feature

1. The operation is labor-saving: the ball is supported by the upper and lower bearings to reduce the friction and eliminate the excessive sealing torque caused by the pressure of the inlet and the seal seat.

2. The sealing performance is reliable: PTFE single-material sealing ring embedded in the stainless steel valve seat, the metal valve seat with a spring to ensure that the end of the seal enough pre-tightening force, the valve sealing surface wear during use, under the spring Valves continue to ensure good sealing performance.

3. The fire structure: In order to prevent the emergence of sudden heat or fire, teflon seal ring burned, a larger leak, and to promote the fire, the ball and valve seat set between the fire seal ring, the seal burned, In the spring force, the valve seat ring quickly push the ball, the formation of metal and metal seals, play a certain degree of sealing effect. Fire test in line with APl6FA and APl607 standards.

4. Automatic pressure relief function: When the valve medium chamber stagnant abnormal increase in pressure exceeds the pre-spring force, the seat back from the ball, to achieve the effect of automatic relief pressure relief valve seat automatically complex

5. The drain pipe: the body is set up excretion holes up and down, can check the valve seat for leaks, at work, the valve is fully open or fully closed, the removal of the cavity pressure can be directly replaced filler; can discharge cavity Retention, reduce the media on the valve pollution.

Performance parameters

Work pressure（MPa）		1.6~25.0
Poper temperature（℃）		≤180
Suitable media		Natural gas, liquefied petroleum gas
Material	Body, bonnet	Carbon steel cast steel
	Ball, stem	/ Chrome nickel molybdenum stainless steel
	Sealing ring	Teflon
	Filler	Teflon

Main connection size

PN	DN	L	D	K	d	Y	b	Z-d0	Ws	Hs	Hw	Hd
1.6MPa	40	165	145	110	85	-	16	4-18	230	135	-	-
	50	203	160	125	100	-	16	4-18	260	150	-	-
	65	222	180	145	120	-	18	4-18	350	180	-	-
	80	241	195	160	135	-	20	8-18	500	195	-	-
	100	305	215	180	155	-	20	8-18	650	245	310	420
	125	356	245	210	185	-	22	8-18	800	270	330	440
	150	394	280	240	210	-	24	8-23	1000	295	390	470
	200	457	335	295	265	-	26	12-23	-	-	440	510
	250	533	405	355	320	-	30	12-25	-	-	490	560
	300	610	460	410	375	-	30	12-25	-	-	530	600
	350	686	520	470	435	-	34	16-25	-	-	620	670
	400	762	580	525	485	-	36	16-30	-	-	675	720
	450	864	640	585	545	-	40	20-30	-	-	740	790
	500	914	705	650	608	-	44	20-34	-	-	825	870
	600	1067	840	770	718	-	48	20-41	-	-	920	960
2.5MPa	40	190	145	110	85	-	18	4-18	230	135	-	-
	50	216	160	125	100	-	20	4-18	260	150	-	-
	65	241	180	145	120	-	22	8-18	350	180	-	-
	80	283	195	160	135	-	22	8-18	500	195	-	-
	100	305	230	190	160	-	24	8-23	650	245	310	420
	125	381	270	220	188	-	28	8-25	800	270	330	440
	150	403	300	250	218	-	30	8-25	1000	295	390	470
	200	502	360	310	278	-	34	12-25	-	-	440	510
	250	568	425	370	332	-	36	12-30	-	-	490	560
	300	648	485	430	390	-	40	16-30	-	-	530	600
	350	762	550	490	448	-	44	16-34	-	-	620	670
	400	838	610	550	505	-	48	16-34	-	-	675	720
	450	914	660	600	555	-	50	20-34	-	-	740	790
	500	991	730	660	610	-	52	20-41	-	-	825	870
	600	1143	840	770	718	-	56	20-41	-	-	920	960
4.0MPa	40	190	145	110	85	76	18	4-18	230	135	-	-
	50	216	160	125	100	88	20	4-18	260	150	-	-
	65	241	180	145	120	110	22	8-18	350	180	-	-
	80	283	195	160	135	121	22	8-18	500	195	-	-
	100	305	230	190	160	150	24	8-23	800	250	320	430
	125	381	270	220	188	176	28	8-25	1000	280	340	450
	150	403	300	250	218	204	30	8-25	1200	300	405	480
	200	502	375	320	282	260	38	12-30	-	-	450	530
	250	568	445	385	345	313	42	12-34	-	-	505	590
	300	648	510	450	408	364	46	16-34	-	-	545	620
	350	762	570	510	465	422	52	16-34	-	-	640	690
	400	838	655	585	535	474	58	16-41	-	-	690	740
	450	914	680	610	560	524	60	20-41	-	-	760	810
	500	991	755	670	612	576	62	20-48	-	-	850	900
6.4MPa	40	241	165	125	95	76	24	4-23	260	140	-	-
	50	292	175	135	105	88	26	4-23	260	160	-	-
	65	330	200	160	130	110	28	8-23	350	180	-	-
	80	356	210	170	140	121	30	8-23	500	220	-	-
	100	406	250	200	168	150	32	8-25	800	250	320	430
	125	450	295	240	202	176	36	8-30	1000	295	340	450
	150	495	340	280	240	204	38	8-34	1200	340	405	480
	200	597	405	345	300	260	44	12-34	-	-	450	530
	250	673	470	400	352	313	48	12-41	-	-	505	590
	300	762	530	460	412	364	54	16-41	-	-	545	620
	350	826	595	525	475	422	60	16-41	-	-	640	690
	400	902	670	585	525	474	66	16-48	-	-	690	740
	500	1054	800	705	640	576	70	20-54	-	-	760	810
10.0MPa	40	241	165	125	95	76	26	4-23	260	160	-	-
	50	292	195	145	112	88	28	4-25	350	180	-	-
	65	330	220	170	138	110	32	8-25	500	200	-	-
	80	356	230	180	148	121	34	8-25	800	240	310	410
	100	432	265	210	172	150	38	8-30	1000	270	340	450
	125	508	310	250	210	176	42	8-34	1200	320	360	505
	150	559	350	290	250	204	46	12-34	-	-	425	555
	200	660	430	360	312	260	54	12-41	-	-	470	625
	250	787	500	430	382	313	60	12-41	-	-	525	645
	300	838	585	500	442	364	70	16-48	-	-	565	715
	350	889	665	560	498	422	76	16-54	-	-	670	770
	400	991	715	620	558	474	80	16-54	-	-	720	840

Inquiry

If you have any enquiry about quotation or cooperation,please feel free to email us at info@cnlgvalve.com or use the following enquiry form. Our sales representative will contact you within 24 hours. Thank you for your interest in our products.

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Special Ball Valve for Gas

Ball valve

Product Details

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