The traditional ball valve, whether floating or fixed, always contacts the valve seat with large switching torque and easy to damage the sealing surface. When the track ball wheel is opened and closed, the ball first deflects - δ angle and then rotates. During the whole process of opening and closing, the ball and the valve seat are separated, so the valve seat will not be scratched and the opening and closing torque is small.

GQ47H Working principle of orbit ball valve PN16 ～ PN40

①When the valve is in the full open position, turn the hand wheel clockwise. With the stem nut and the thrust bearing, the valve stem begins to drop and the ball begins to rotate.	②When the hand wheel is continuously rotated, the precise spiral curve groove track on the valve stem interacts with the guide pin embedded in it to drive the ball to rotate clockwise with the valve stem.	③When the valve is about to close, the valve stem drives the ball to rotate 90 ° without friction with the sealing surface of the valve seat.	④Continue to rotate the handwheel, and the valve stem that descends again will press the ball mechanically, so that the ball and the valve seat are in close contact, so as to achieve the sealing effect.
⑧Continue to turn the hand wheel, when the valve stem rises to the limit position, the ball has been reversed 90 ° with the valve stem, and the valve is in the full open position.	⑦When the valve is about to open, the precise spiral groove track on the valve stem interacts with the guide pin embedded in it, which drives the ball to rotate continuously in the counter clockwise direction without friction with the sealing surface of the valve seat.	⑥Continuous rotation of the handwheel and valve stem will drive the ball to tilt away from the valve seat while rising.	⑤When the valve is in the fully closed position, turn the handwheel counterclockwise. With the stem nut in conjunction with the thrust bearing, the stem begins to rise and the ball begins to rotate

1. Open and close without friction. The function of rail ball valve solves the problem of sealing affected by friction between sealing faces of traditional valves.
2. Top mounted structure. The valve installed on the pipeline can be directly inspected and maintained online. It can effectively reduce the shutdown of the device and reduce the production cost.
3. Single seat design. It eliminates the problem that the medium in the valve chamber affects the safety due to abnormal pressure rise.
4. Low torque design. The valve rod of special structure design can be opened and closed easily with a small hand wheel valve.
5. Wedge seal structure. The valve is sealed by the mechanical force provided by the valve stem to press the ball wedge onto the valve seat. The sealing performance of the valve is not affected by the change of pipeline pressure difference, and the sealing performance is reliably guaranteed under various working conditions.
6. Self cleaning structure of sealing surface. When the ball tilts away from the valve seat, the fluid in the pipeline will pass through the sealing surface of the ball evenly in 360 degrees. It not only eliminates the local scour of high-speed fluid on the valve seat, but also washes away the accumulation on the sealing surface to achieve the purpose of self-cleaning.

GQ47H Technical specification for orbit ball valve PN16 ～ PN40

design basis	GB	API
Structural length	JB/T 7745 GB/T 12221	ANSI B16.10
Connecting flange	GB/T 9113 JB/79 HG20592	ANSI B16.5
Butt welding end	GB/T 12224	MSS SP 44 ANSI B16.25
Inspection and test	JB/T 9092	SPI 598

 

GQ47H Material of main parts of rail type ball valve PN16 ～ PN40

Main models	Part name	texture of material
GQ47H	Valve body and cover	WCB	ZG1Cr5Mo	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
	sphere
	Stem	2Cr13	1Cr18Ni9Ti	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
	Sealing surface	Cemented carbide steel
	Guide pin	2Cr13 40CrMn
	Stem nut	Cast manganese brass
	Bolt	35		1Cr18Ni9Ti
	Nut	35 45
	filler	Flexible graphite ring PTFE
	shim	Flexible graphite wound gasket flexible graphite composite gasket
	handwheel	malleable iron

GQ47H Performance Specification for orbital ball valve PN16 ～ PN40

Pressure rating	Test pressure		Applicable environment
	Shell test	Sealing test
1.6	2.4	1.76	Inflammable, explosive It is easy to volatilize and polymerize Combination and highly toxic occasions
2.5	3.75	2.75
4.0	6.0	4.4
6.4	9.6	7.04
CLASS150	2.94	2.2
CLASS300	7.5	5.5
CLASS600	16.0	11.0
Applicable temperature	-190～≤550℃
Applicable media	Water, oil, natural gas and various soft media and suspensions
Driving mode	Water, oil, natural gas and various soft media and suspensions

 

GQ47H Main connecting dimensions of orbit ball valve PN16 ～ PN40(mm)

Pressure level	Main dimensions	Nominal diameter(mm)
		25	32	40	50	65	80	100	125	150	200	250	300	350	400	450	500
PN1.6MPa	L	100	180	200	230	290	310	350	400	480	600	730	850	980	1100	1200	1250
	H	240	260	307	360	410	483	512	543	581	617	672	723	758	791	828	870
	Kg	9.5	16	19	28	30	41	55	78	115	215	270	385	502	876	980	1240
PN2.5MPa	L	160	180	200	230	290	310	350	400	480	600	730	850	980	1100	1200	1250
	H	260	280	320	360	430	490	525	567	604	642	695	742	781	815	864	905
	Kg	9.5	16	19	28	30	45	59	82	121	230	289	402	540	913	1120	1280
PN4.0MPa	L	160	180	200	230	290	310	350	400	480	600	730	850	980	1100	1200	1250
	H	260	280	320	360	436	492	527	607	649	701	750	750	790	832	875	910
	Kg	10	17	20	25	32	45	59	82	115	2130	295	402	540	913	1124	348
PN6.4MPa	L	160	180	200	230	290	310	350	400	480	600	730	850	980	1100	-	-
	H	280	300	329	365	450	509	541	663	725	781	790	806	821	858	-	-
	Kg	10	17	20	25	32	52	68	106	168	281	355	498	689	1134	-	-
150Lb	L	127	140	165	178	190	203	229	356	394	457	533	910	686	762	964	914
300Lb	L	165	178	190	216	214	283	305	381	403	502	568	648	762	838	914	991
600Lb	L	216	229	241	292	330	356	432	508	559	660	787	838	889	991	1092	1194

 

1. Be careful in installation and construction, and do not hit the valve.
2. Before installation, the ball valve should be inspected to check the specification and model, and identify whether there is damage, especially for the valve stem. Turn it a few times to see if it is skewed, because Zui is prone to bump the stem during transportation. Also remove the debris in the valve.
3. When lifting the ball valve, the rope should not be tied to the hand wheel or the valve stem to avoid damage to these parts, but should be tied to the valve body.
4. The pipeline connected to the ball valve must be cleaned. Compressed air can be used to blow away iron oxide chips, mud and sand, welding slag and other impurities. These debris, not only easy to scratch the sealing surface of the ball valve, in which large particles of debris (such as welding slag), but also block the small valve, so that its failure.
5. The position of valve handle rotation should be reserved during installation. 6. The ball valve cannot be used as throttling. 7. The ball valve with transmission mechanism shall be installed vertically.