V-Port Control Ball Valve

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V-Port Control Ball Valve

Pressure Range: PN1.6~6.4MPa, ANSI150LB~600LB
Nominal Diameter: DN15~DN400
Connection Mode: RF/RJ/FF/LG, Flange PN16 convex surface, PN40, 64 concave convex surface
Body Material: LCB, WCB, CF8, CF8M, CF3, CF3M
Flow Characteristics: ON-OFF
Valve Core Movement: Close the valve clockwise
Seat Form: Soft seat, metal seat (seal cover hardening)
Suitable Temperature: Soft seat: -20~+250°C; Metal seat: -60~+450°C
Leakage Level: Soft seat: ANSI VI; Metal seat: ANSI IV
Design Standard: GB/T 12237, ASME B16.34

Product Overview

V-port control ball valve is a kind of ball valve. It shuts down a half-sphere with a V opening. The V-shaped opening has a sharp edge, and during the process of rotating the sphere, wiping occurs between the closed position and the media, which generates a strong cutting force. The sphere of the V-shaped opening port forms a fan-shaped area, and with the valve seat, it can change the port area.

In the process of rotary forming, it allows for medium precision adjustment. It is a type of regulator with an angle of rotation, similar to the common ball valve sealing. This design combines regulation and switch functions. Equipped with pneumatic or electric actuators, it is widely used in industrial process control systems.

Model Compilation Method

| Z | SH | QV | Y – 16 | K | 25 |

Product	Z								Actuator class
Actuator		SH							Pneumatic piston type
Actuator		DR							Electric
Spool Type			QV						Ball Valve
Spool Type			Do						Three position ball valves at both ends
Supplementary structure(multiple combinations)				Y					Hard Seal
				J					Jacket insulation type
				D					Low temperature type
Nominal pressure					16				1.6MPa
					40				4.0MPa
					64				6.4MPa
					100				10.0MPa
Machine action mode						K			Gas open
						B			Gas closed type
						KD			Double acting gas opening
Nominal diameter							25		For example, said
Nominal diameter							100		For example, said
Body material								C	WCB
								P	CF8
								M	CF8M
								L	CF3M

Example 1: ZDRQY-16K 25C refers to a “QV” type electric hard seal cutting ball valve with a nominal pressure of PN1.6 MPa. It operates with an electric open mechanism and has a nominal diameter of DN25. The body material is WCB.

Example 2: ZSHQY-16KD 100P refers to a pneumatic piston type “QV” sealing cut-off ball valve with a nominal pressure of PN1.6 MPa. It operates with a gas-open double-acting mechanism and has a nominal diameter of DN100. The body material is CF8.

Product Features

Body: The use of a one-piece valve body design, both the dual and flange v-port control ball valve bodies are the overall side structure. The structure is rigid, making it less likely to deform or leak.

Stem: The outer circle adopts fine grinding technology, reducing the friction coefficient between the packing. The valve stem and core use a spline connection, ensuring good neutrality, large bearing torque, and effective elimination of gaps between the valve stem and core. This improves the valve regulation precision.

Self-Lubricating Bearing: The upper and lower stem is fixed with self-lubrication, providing high rotary precision, good rotational stability, and smoother valve operation.

Sealing Seat Cover: The side-mounted sealing seat cover design simplifies valve maintenance and makes it more convenient.

V-Type Valve Core: Designed with a special V-shaped incision, this core provides approximately the same percentage of flow characteristics. The incision between the ball and seat offers a shear effect, enabling it to cut and scrape fiber media, high-viscosity fluids, and solid particles, allowing smooth flow through the valve. The V-ball undergoes surface hardening, grinding, and polishing for wear resistance.

Seat: The preload with a waveform spring ensures the seal seat is always in close contact with the valve core. This design enhances sealing performance and allows for automatic compensation over long-term use, reducing seal wear.

Soft and Metal Seal Seats: Soft seal seats and metal seal seats are interchangeable to suit different working conditions.

Valve Seat Replacement: The valve seat replacement process is simple and convenient.

Small Flow Rate Accurate Control: Through the processing of a small diameter valve core with a special V-shaped opening, small Cv values can be accurately controlled.

Specification Parameters

Main Parts Material

Part No.	Part Name	Material	Part No.	Part Name	Material
1	Body	WCB, CF8, CF8M, CF3, CF3M	12	Self-Lubricating Bearing	Composite Materials
2	Spool	CF8, CF8M (Hard Chrome Plating / Supersonic Spray)	13	Packing	PTFE
3	Back Stem	17-4PH, SS316	14	Packing Gland	CF8
4	Cylindrical Pin	SS304, SS316	15	O-Rings	Fluorine Rubber
5	Front Stem	17-4PH, SS316	16	Sealing Ring	SS304, SS316 (Hard Chrome / Supersonic Spray)
6	Spline	17-4PH, SS316	17	Seal Seat Spring	SS316
7	Flat Key	SS304, 45#	18	Seal Seat Cover	Q235, SS304, SS316
8	Back Gland	CF8, CF8M	19	Hexagon Socket Screw	SS304
9	O-Rings	Fluorine Rubber	20	Hexagon Screws	SS304
10	Adjusting Pad	PTFE	21	Double Screw	SS304
11	Self-Lubricating Bearing	Composite Materials	22	Hexagon Screws	SS304

Maximum Allowable Seat Leakage

Soft Seal Seat: 0.6 MPa compressed air, no leakage.

Hard Sealed Seat: 1.Made according to customer’s requirements. 2.Sealed according to GB/T4312V class without special requirements, the specific leakage amount is determined accordingly.

Specifications	Max. Allowable Leakage of Hard Seal
DN25 (1″)	0.15 mL/min
DN32 (1 1/4″)	0.18 mL/min
DN40 (1 1/2″)	0.24 mL/min
DN50 (2″)	0.30 mL/min
DN65 (2 1/2″)	0.39 mL/min
DN80 (3″)	0.48 mL/min
DN100 (4″)	0.60 mL/min
DN125 (5″)	0.75 mL/min
DN150 (6″)	0.90 mL/min
DN200 (8″)	1.20 mL/min
DN250 (10″)	1.50 mL/min
DN300 (12″)	1.80 mL/min
DN350 (14″)	2.10 mL/min
DN400 (16″)	2.40 mL/min
DN450 (18″)	2.60 mL/min
DN500 (20″)	3.00 mL/min

Flow Characteristic

The inherent flow characteristics of the V-type regulator are approximately equal percentage characteristics, as demonstrated in the following figure.

CV Value Table of Standard Products

Specifications	Cv Value
DN25 (1″)	36
DN32 (1 1/4″)	56
DN40 (1 1/2″)	94
DN50 (2″)	152
DN65 (2 1/2″)	262
DN80 (3″)	358
DN100 (4″)	540
DN125 (5″)	90
DN150 (6″)	1424
DN200 (8″)	2176
DN250 (10″)	3532
DN300 (12″)	5732
DN350 (14″)	8245
DN400 (16″)	10651
DN450 (18″)	12878
DN500 (20″)	16343

Main External Connection Dimensions

DN	A	B	b1	f	C	T	Y	L	Φd	h	S	K	M	Z
25	102	115	16	2	38	81	73	75	16	35	75	/	2-M10	5
32	102	140	18	2	45	86	78	75	16	35	75	/	2-M10	5
40	114	150	18	2	50	90	80	75	16	35	75	/	2-M10	5
50	124	165	20	2	62	93	90	75	16	35	75	/	2-M10	5
65	145	185	20	2	73	108	105	75	16	35	75	/	2-M10	5
80	165	200	20	2	90	123	118	75	20	35	90	28	4-M10	6
100	194	220	22	2	115	138	130	75	20	35	90	28	4-M10	6
125	194	250	22	2	134	148	145	80	25	40	90	28	4-M10	8
150	229	285	24	2	164	170	170	94	30	50	110	40	4-M12	8
200	243	340	24	2	206	200	201	94	30	50	110	40	4-M12	8
250	297	405	26	2	260	240	237	98	40	60	135	40	4-M16	12
300	338	460	28	2	316	286	282	98	40	60	135	40	4-M16	12
350	400	520	30	2	372	330	337	125	50	60	140	64	4-M16	14
400	400	580	32	2	420	367	372	172	60	80	170	80	4-M20	18
450	520	640	40	2	470	422	432	172	70	90	190	90	4-M24	20
500	600	715	44	2	516	490	498	180	80	100	190	90	4-M24	22

Specification Applications

The v-port control ball valve is widely used in industrial process control systems requiring precise flow regulation. Its unique V-shaped core design ensures accurate control, even in applications involving high-viscosity fluids, fiber media, or fluids containing solid particles. The valve is ideal for industries such as chemical processing, petroleum, power generation, pulp and paper, and wastewater treatment. It provides excellent sealing performance, smooth operation, and is suitable for both throttling and on-off applications. The valve’s high durability and efficiency make it perfect for systems requiring long-term reliability and minimal maintenance.

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