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 shellThe 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 seatPre-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 structureWhen 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 structureWhen 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 StructureAccording 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 StructureWhile 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 releaseWhen 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 DeviceA 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 StructureThe 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.

Executive Standard

Design Basis	GB series
Design standards	GB/T12237
Flange connection structure length	GB/T12221
Structural length (welded)	GB/T15188.1
Connecting flange	GB/T9113 JB/T79 Hg20592
Butt welding end	GB/T12224
Test and Inspection	GB/T9092

Material Of Main Parts

NO	Part Name	Material
		GB	ASTM
1	Valve body	WCB	A2116-WCB
2	Spring	60Si2aMn	AISI 9260
3	Sealing ring	PTFE	PTFE
4	Gasket	PTFE	PTFE
5	Blow off nut	25	A105
6	"0" type seal	Rubber	Rubber
7	Bottom cover	25	A105
8	Screw	35	A193-B7
9	Fixed shaft	1Cr13	A276-410
10	Plain bearing	PTFE&	PTFE&
11	Sphere	1C18Ni9Ti	SS304
12	Cap	WCB	A216-WCB
13	Valve seat	25	A105
14	Stem	1Cr33	A276-410
15	Stud	35CrMoA	A193-B7
16	Nut	35	A194-2H
17	Sleeve	25	A105
18	Filler	PTFE	PTFE
19	Bracket	WCB	A216-WCB
20	Packing gland	WCB	A2116-WCB
21	Key	45	AISI C 1045

Optional Features

Explosion-proof function	Protection grade: equivalent to IP65 (or IP67), explosion-proof mark: ExdⅡBT4
Adjustment function	Input and output 4-20mA, 0-5V.DC, 0-10V.DC
Manual function	Can be equipped with manual device, valve opening and closing function
Relevant temperature	Ambient temperature: -25～+70℃, Ambient humidity: ≤95%

Main External Connection Dimensions(PN1.6MPa)

DN		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		165	180	190	216	241	283	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
Electric	H2	-	-	-	-	-	-	-	-	554	600	652	760	770	830	-	940	940	1115
	L1	-	-	-	-	-	-	-	-	235	235	235	259	400	400	-	410	410	410

 

(PN2.5MPa)

DN		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		165	180	190	216	241	283	305	381	403	502	568	648	762	838	914	991	1143	1346
H		50	55	80	102	114	127	152	184	219	273	360	395	430	470	550	580	700	800
Electric	H2	-	-	-	-	-	-	-	-	235	235	400	400	410	410	-	420	690	690
	L1	-	-	-	-	-	-	-	-	74	350	350	420	420	400	-	400	410	650

 

(PN4.0MPa)

DN		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		165	180	190	216	241	283	305	381	403	502	568	648	762	838	914	991	1143	1346
H		50	55	80	102	114	127	152	184	219	273	360	395	430	470	550	580	700	800
Electric	H2	-	-	-	-	-	-	-	-	235	235	400	400	410	410	-	420	690	690
	L1	-	-	-	-	-	-	-	-	74	350	350	420	420	400	-	400	410	650

 

(PN6.4MPa)

DN		50	65	80	100	150	200	250	300	350	400	500	600	700
d1		50	65	80	100	150	200	250	300	337	387	489	591	686
L		292	330	356	406	495	597	673	762	826	902	1054	1232	1397
H		114	124	133	159	250	294	395	445	500	530	660	800	900
Electric	H2	-	-	-	-	554	574	731	771	867	802	979	1085	1148
	L1	-	-	-	-	235	235	400	400	410	410	420	690	690