API Cast steel Trunnion Type Ball Valve-Ball valve series-球阀厂家-固定式球阀厂家-上海冠环阀门制造有限公司

Product Design Features

Serial floating ball valves are mainly applied to natural gas,oil products,chemical engineering,metallurgy,city building,environment protection,pharmacy and food industries, among which the anti-sulphur series are used for long delivery pipes of natural gas that contains hydrogen sulphide medium,a lot of impurity and corrosive substances.

The main structure features include

1.Construction of the shell

The valve bush of the stationary ball valve can be designed to three types:casting construction, forging construction, and full welding construction,according to user's demand or different working condition.And the ball valve of the full welding construction is mainly applied to underground operation.

2.The unique sealed structure of valve seat

Pre-ball sealed structure,post-ball sealed structure or pre-post-ball double sealed structures are available for choosing to different pressure,medium properties,and sealing requirements of the fixed ball valves.

3.Automatic pressure-relieving structure

When an abnormal rising of pressure appear in the hollow cavity,the single sealed-structure takes on the function of automatic pressure relieving,whiie the double-sealed structure can finish the job through a attached pressure-reliving device to the valve body.

4.Emergent repairman for the sealed structure

When leak was caused by damage on the valve seat or valve stick,the sealed grease injected through the grease feeding valve can seal the valve at once.

5.Fire-resistant Structure

According to the operating condition and user's requirement,ball valve can be designed with a fire-resistant structure up to the fire resistant standards of API607,API 6FA and JB/T6899.Once the soft seal ring is burnt out on fire,the structure can avoid serious leaking of the medium and prevent the fire from scaling up.

6.Anti-static Structure

While operating the valve,the friction between the sphere and the base will produce static charges accumulating on the sphere.To avoid static sparkle,the fire-resistant device is designed to derive the accumulated static sparkle,charges from the sphere.

7.Jam and release

When the valve is close,the valve seats will stop the effluence,and the precipitate in the can be released through the releasing device.

8.Locking Device

A locking structure is designed on the full-open and full-close spots of manual ball valves to avoid abnormal open-and-close produced by miss-operation or unpredictable circuit vibration.On production lines of petroleum and chemicals of flammable mediums,and during the course of outdoor piping,the design is especially advantageous and practical.

9.Full Drift Diameter Structure and Retractive Diameter Structure

The two structure series are produced to meet different requirement of users,The passage inside diameter of full diameter ball valves is the same as that of valve pipe,which is convenient for pipe cleaning.The weight of retractive diameter ball valves is relatively lighter,but the fluid resistance is just 1/7 that of stop valves with the same caliber.Therefore,the application prospects of retractive diameter series is much better.

Main external connection dimensions PN16

DN(mm)		25	32	40	50	65	80	100	125	150	200	250	300	350	400	450	500	600	700
d1		25	32	40	50	65	80	100	125	150	200	250	300	337	387	438	489	591	686
L		140	165	165	203	222	241	305	356	394	457	533	610	686	762	864	914	1067	1245
H		50	55	80	102	114	127	152	184	219	273	360	395	430	470	550	580	700	800
Manual	H1	75	85	95	107	125	152	178	300	330	398	495	580	625	670	698	840	1050	1100
	E	-	-	-		-	-	-	-	-	116	116	171	171	257	257	257	150	83
	F	-	-	-		-	-	-	-	-	350	350	400	420	400	420	400	410	650
	W	160	160	230	230	400	400	650	1050	1050	600	600	800	800	800	800	800	800	800
	WT(kg)	4.5	5.7	7.0	12	16	22	35	58	74	205	322	460	576	864	1280	1600	1600	4500
Electric	H2	-	-	-		-	-	-	-	554	600	652	760	770	830	-	940	940	1115
Electric	L1	-	-	-		-	-	-	-	235	235	235	259	400	400	-	410	410	410
Pneumatic	H3	215	240	264	274	379	389	479	552	666	736	926	1059	1127	1393	1468	1538	1538	1450
Pneumatic	L2	200	270	270	270	405	405	576	576	776	776	776	1060	1060	1360	1360	1360	1360	2840