Pneumatic V Notch Segmented V-ball Control Valve

Pneumatic V Notch Segmented V-ball Control Valve

V-ball control valveis a kind of ball valve.Pneumatic V notch segmented ball valvehas the same sealing performance as a normal ball valve, and it has both regulating and on off functions.The disc of V-ball control valve is a hemisphere with a V-shaped notch and there is a sharp edge on the V-shaped notch.

During the rotation of the ball,there is a wiping action between the closing discs, which has a strong cutting force to the medium.There forms a sectoral area between the v-shaped notch of the ball and the valve seat flow passage.The cross-sectional area of the flow channel can be changed during the rotation process to form a precise control of the medium.

Features of Pneumatic V Notch Segmented V-ball Control Valve:

1. Valve body:Our v-ball control valve adopts one-piece segmented valve body design. Both the wafer-type and flange-type V-shaped ball valve body are integral side-mounted structure, which has strong structural rigidity and is not easy to cause deformation and leakage;

2. Valve stem:It adopts the fine grinding technology to process the outer circle,and the friction coefficient between the stem and the packing is small.The valve stem and the valve ball are splined, which has good neutrality and large bearing torque.The spline connection effectively eliminates the matching clearance between the valve stem and the valve ball,and improves the control accuracy of the pneumatic segmented V notch ball valve.

3. Self-lubricating bearing:upp的er and lower valve stems are self-lubricating and fixed.It has high rotation precision and good rotation stability, which makes the v-ball control valve run more smoothly.

4. Sealing seat cover:side-mounted sealing seat cover design makes valve maintenance more convenient.

5.V-notch valve ball:it is designed to a V-shaped notch with a special shape, so that the valve has a similar percentage of flow characteristics. There is a shearing action between the spherical surface with the V notch and the valve seat, which can cut and scrape the high viscosity medium containing fiber and solid particles, so that it can pass through the valve smoothly.After hardening treatment,grinding and polishing,the pneumatic v notch ball valve is smooth and wear-resistiant.

6. Valve Seat:pre-tightened with wave spring, the sealing seat is always in close contact with the valve ball,and the sealing performance is good, which can play automatic compensation role in the seal during long-term use.

7. Low flow precise control:through the processing for the special V-shaped opening of the small-diameter valve ball, precise control of small Cv value can be realized.

Main Parts Materials of Pneumatic V Notch Segmented V-ball Control Valve:

No.	Parts Name	Q’ty(pc)	Material
1	Valve Body	1	WCB,CF8,CF8M,CF3,CF3M
2	Valve Ball	1	CF8,CF8M+chrome plating or HVOF spraying
3	Lower Stem	1	17-4PH,SS316
4	Round Pin	2	SS304, SS316
5	Upper Stem	1	17-4PH,SS316
6	Spline	1	17-4PH,SS316
7	Flat Key	1	SS304,45#
8	Lower Gland	1	CF8,CF8M
9	O-ring	1	Fluororubber
10	Gasket	1	PTFE
11	Self-lubricating Bearing	1	Composite Material
12	Self-lubricating Bearing	1	Composite Material
13	Packing	1 set	PTFE
14	Packing Gland	1	CF8
15	O-ring	1	Fluororubber
16	Seal Ring	1	SS304, SS316+chrome plating or HVOF spraying
17	Seal Seat Spring	1	SS316
18	Seal Seat Cover	1	Q235,SS304,SS316
19	Soket Head Cap Screw		SS304
20	Hex Head Screw	4	SS304
21	Double Head Screw	2	SS304
22	Hex Head Screw	2	SS304

Application of All Kinds of Valve Seat Structures—V-ball Control Valve:

Metal Seal Seat A & E
Valve Seat	304/316+Stellite
Spring	17-7PH/316
O-ring	fluororubber
Packing	PTFE
Spherical Surface Hardening Treament	Hard chrome plating/Nitriding/Spraying WC/Spraying STL
Application Temperature Range	(-29°C~150°C)
Application Medium Type	Water/oil/steam/solid particles,etc.

Metal Seal Seat A & E
Valve Seat	304/316+Stellite
Spring	17-7PH/316
O-ring	high temperature fluororubber
Packing	graphite
Spherical Surface Hardening Treament	Hard chrome plating/Nitriding/Spraying WC/Spraying STL
Application Temperature Range	(-29°C~250°C)
Application Medium Type	Water/oil/steam/solid particles,etc.

Soft Seal Seat B
Valve Seat	304+PTFE/316+PTFE
Spring	17-7PH/Inconel
O-ring	fluororubber
Packing	PTFE
Spherical Surface Hardening Treament	Hard chrome plating/Nitriding
Application Temperature Range	(-29°C~150°C)
Application Medium Type	Water/oil/steam/gas,etc.

金属密封阀座C
Valve Seat	304/316+Stellite
Spring	17-7PH/Inconel
O-ring	graphite
Packing	graphite
Spherical Surface Hardening Treament	Nitriding/Spraying WC/Spraying STL
Application Temperature Range	(-29°C~350°C)
Application Medium Type	steam/solid particles,etc.

金属密封阀座D
Valve Seat	304/316+Stellite
Spring	17-7PH/316
O-ring	fluororubber
Packing	PTFE
Spherical Surface Hardening Treament	Hard chrome plating/Nitriding/Spraying WC/Spraying STL
Application Temperature Range	(-29°C~150°C)
Application Medium Type	Water/oil/steam/solid particles,etc.

The Body Dimensions of Pneumatic V Notch Segmented V-ball Control Valve:

DN	A	B	b1	f	C	T	Y	L	Ød	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	64	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