Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

Q641H/F Pneumatic Control Ball Valve
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Phone：+86（577）6730 7899
Mobile：+86 195 1816 9569
Fax：+86（577）6738 7099
Email：Lucas@kaiweixi.com
Address：No. 1, Linxia Road, Oubei Street, Yongjia County, Wenzhou City, Zhejiang Province,china
Website：https://www.kaiweixi.com

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Q641H/F Pneumatic Control Ball Valve

Model：Q641F-16P/Q641F-25P/Q641F-40P/Q641F-64P/Q641H-16C/Q641H-25C/Q641H-40C/Q641H-64C
Specification：DN25~350
Temperature：-40-450℃
Medium：Gas, Liquid, Fibrous media, Solid particles

Pressure：PN16、PN25、PN40、PN64
Connection method：Flanged
Driving method：Pneumatic
Material：Carbon Steel (WCB), Cast Steel, Stainless Steel (CF8/CF8M)

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Q641H/F Pneumatic Control Ball ValveOverview

Q641H/F pneumatic regulating ball valve is an industrial automation execution unit consisting of a high-performance pneumatic piston actuator and a rotary ball valve (O-port or V-port). The valve receives air supply signals from the control system. Through an electro-pneumatic positioner, standard 4-20mA signals are converted into pneumatic power to drive the ball core to rotate between 0-90 degrees, achieving precise proportional regulation or shut-off of medium flow, pressure, and temperature. In the model designation, H represents a metal hard-seal structure for high temperature, high pressure, and abrasive conditions; F represents a resilient soft-seal structure (such as PTFE) for bubble-tight shut-off at ambient temperatures. This series is widely used in automated networks for petroleum, chemical, power, paper, and water treatment due to its minimal flow resistance, high rangeability, and rapid action.

Product Image of Q641H/F Pneumatic Control Ball Valve

Q641H/F Pneumatic Control Ball ValveCharacteristic

1.Precise flow regulation:When utilizing a V-port ball design, it offers an approximate equal percentage flow characteristic with a wide regulation range and high precision. The shearing force between the V-edge and seat effectively cuts through fibers and particles, preventing jamming.
2.High flow capacity and low resistance:When fully open, the flow path is smooth and unobstructed, with a flow resistance coefficient near zero. This high performance meets high-flow needs while significantly reducing pumping energy consumption.
3.Dual sealing structures:H-type hard seals utilize high-hardness alloy overlay for erosion and wear resistance; F-type soft seals use a floating seat design with automatic compensation to ensure reliable bi-directional zero leakage.
4.Powerful pneumatic drive:Equipped with double-acting or single-acting pneumatic piston actuators, providing high torque and sensitive response. Fail-safe configurations can be set to move the valve to a safe position (fully open or closed) upon air supply loss.
5.Intrinsically safe and explosion-proof:Driven by compressed air, it eliminates spark risks, providing natural safety for hazardous areas such as petrochemical and natural gas facilities.
6.Compact and lightweight layout:The integrated design ensures smaller dimensions and weight than comparable butterfly or cage valves, reducing installation space requirements and mechanical loads on the pipeline.
7.Material and condition adaptability:Bodies are available in carbon steel or stainless steel (304/316L). Internals can be hardened based on media characteristics to handle various corrosive or non-corrosive fluids across wide temperature ranges.
8.Modular maintenance:Actuator-to-body connection complies with ISO 5211 for high interchangeability. Wearing parts like seal rings and packing are modularly designed for quick replacement without removing the entire valve body.

Q641H/F Pneumatic Control Ball Valvestructure principle

Structural Drawing of Q641H/F Pneumatic Control Ball Valve

List of Component Names and Materials

No.	Component	Material C	Material P
1	Right valve body	A216-WCB	A351-CF8
2	Nut	A194-2H	A276-304
3	Gasket	PTFE, Graphite Metal Composite Pad
4	Screw	A193-B7	A276-304
5	Body	A216-WCB	A351-CF8
6	Seat	PTFE, Nylon, PPL, Hard Alloy
7	Ball	A182-F304	A182-F304
8	Stem	A276-410	A276-410
9	Gasket	A276-304	A276-304
10	Packing	PTFE, Flexible Graphite
11	Bushing	PTFE Composite Bearings
12	Gland	A216-WCB	A351-CF8
13	Screw	A194-2H	A276-304
14	Screw	A194-2H	A276-304
15	Connecting Yoke	A351-CF8	A351-CF8
16	Screw	A194-2H	A276-304
17	Connecting Set	A351-CF8	A351-CF8
18	Pneumatic Device	AT Series, AW Series
19	Location Indicator	Plastic

Q641H/F Pneumatic Control Ball Valvetechnology parameter

Performance Specification Sheet

Performance Specification Sheet
Nominal Pressure	1.6	2.5	4.0	6.4	MPa
Strength test pressure	2.4	3.8	6.0	9.6
Sealing test pressure	1.76	2.8	4.4	7.04
Applicable Temperature	-40-450				℃

Q641H/F Pneumatic Control Ball Valvestandard size

Standard requirements for external dimensions

1.Design & Manufacture： GB12237-89, AP1608, API6D,JP175-48, BS5351, DIN3357.

2.Flange Dimensions：JB/T74~90 ( JB74~90) 、GB9112-9131, HGJ44 -76, SH3406, ANSIB16.5.JISB2212 -2214, NFE29-211, DIN2543.

3.Face-to-Face Dimensions：GB12221-89, ANSIB16.10,JISB2002. NFE29-305, DIN3202.JB/T9092, AP1598.

Outline Drawing of Q641H/F Pneumatic Control Ball Valve

Outline dimension table（Unit：mm）

Nominal Diameter	L	L1	H	H1	D	D1	D2	D3	C	f	n-Φd
25	62	159	260	87	115	85	65	38	16	2	4-Φ14
32	105	159	267	87	140	100	76	42	18	3	4-Φ18
40	114	211	292	87	150	110	84	50	18	3	4-Φ18
50	124	248	292	97	165	125	99	60	20	3	4-Φ18
65	145	269	327	112	185	145	118	75	20	3	4-Φ18
80	165	315	359	112	200	160	132	94	20	3	8-Φ18
100	194	345	359	122	220	180	156	110	22	3	8-Φ18
125	213	409	399	142	250	210	184	135	22	3	8-Φ18
150	229	438	461	165	285	240	211	165	24	3	8-Φ22
200	243	550	509	195	340	295	266	210	24	3	12-Φ22
250	297	633	603	237	405	355	319	260	26	3	12-Φ26
300	334	730	790	287	460	410	370	310	284	4	12-Φ26
350	414	1180	828	338	520	470	429	360	30	4	16-Φ26

Articles related to technology research and development

Dynamic balance electric control valve Patent

The utility model provides a dynamically balanced electric regulating valve, which includes a valve body, a valve cover, a valve rod, a valve core installed inside the valve body and connected to the valve rod, and an actuator installed on the valve cover and connected to the top end of the valve rod. The valve body is internally provided with a water inlet chamber, a valve cavity, and a water outlet chamber in order towards the direction of medium flow. The valve core is in the shape of a bucket with its opening facing downwards. The valve core is located inside the valve cavity and is used for connecting or cutting off between the water inlet chamber and the valve cavity. The top of the valve core is provided with a through port for medium circulation. Above the through port, there is a filter cover detachably connected to the valve core. The valve rod is provided with a step, and the outside of the step is covered with an elastic sleeve that fits it. The top of the filter cover is provided with a fixing hole that fits the elastic sleeve. This utility model can filter the medium, is simple to install, time-saving, labor-saving, and can reduce the medium pressure inside the valve body, extending the service life of the valve core.
1. A dynamic balance electric regulating valve, comprising a valve body, a valve cover, a valve rod, a valve core installed inside the valve body and connected to the valve rod, and an actuator installed on the valve cover and connected to the top end of the valve rod. Its characteristic lies in that the valve body is sequentially provided with an inlet chamber, a valve cavity, and an outlet chamber in the direction of medium flow. The valve core is in the shape of a bucket with an opening facing downwards. The valve core is located inside the valve cavity and is used for connecting or cutting off between the inlet chamber and the valve cavity. The top of the valve core is provided with a port for medium circulation. Above the port, there is a filter cover detachably connected to the valve core. The valve rod is provided with a step, and the outside of the step is covered with an elastic sleeve that fits it. The top of the filter cover is provided with a fixing hole that fits the elastic sleeve.
2. A dynamic balance electric regulating valve according to claim 1, characterized in that the bottom of the valve body is provided with a downward-opening groove, which is connected to the valve cavity through a through hole. A bottom cover connected to the valve body is arranged below the groove, and a pressure relief mechanism is arranged inside the groove. The pressure relief mechanism comprises a force-receiving member, a pressure plate connected to the force-receiving member, and a first spring arranged below the pressure plate and abutting against the bottom cover. The force-receiving member comprises a flow diversion block protruding from the through hole and a connecting rod connected to the flow diversion block, and the connecting rod passes through the pressure plate and is locked and fixed by a nut.
3. A dynamic balance electric regulating valve according to claim 2, characterized in that the top end of the pressure plate is pressed against the top wall of the groove, the bottom of the pressure plate is provided with a boss, and the top end of the first spring is sleeved on the boss.
4. A dynamic balance electric control valve according to claim 1, characterized in that the valve rod is arranged through the valve cover, a sealing cover threadedly connected to the valve cover is sleeved on the valve rod, a convex ring abutting against the valve cover is arranged on the outer circumferential wall of the sealing cover, a nut cover threadedly connected to the sealing cover is arranged at the connection between the sealing cover and the valve rod, an installation groove is arranged at the connection between the nut cover and the valve rod, a plurality of O-rings adapted to the valve rod are stacked in the installation groove, and a packing gland threadedly connected to the installation groove is arranged above the O-rings.
5. A dynamic balance electric control valve according to claim 4, characterized in that a second spring is arranged between the packing gland and the O-ring.
6. A dynamic balance electric control valve according to claim 5, characterized in that a sealing ring adapted to the valve rod is arranged inside the nut cover below the installation groove.
7. A dynamic balance electric control valve according to claim 6, characterized in that the bottom of the sealing cover is provided with a thrust ring that is threadedly connected to the sealing cover and abuts against the bottom end of the valve cover.
8. A dynamic balance electric regulating valve according to claim 1, characterized in that the top surface of the elastic sleeve is higher than the top surface of the filter cover.
9. A dynamic balance electric control valve according to claim 8, characterized in that the filter cover is connected to the valve core through threads.

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Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

Q641H/F Pneumatic Control Ball Valve

More Pneumatic Control Valve>>

More control valve>>

More valve>>

Q641H/F Pneumatic Control Ball Valve