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Pneumatic V-type ball valve

Pneumatic V-type ball valve has double-acting and single-acting (spring return), the use of rack and pinion structure transmission, the performance is more safe and reliable;

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Hualida Valve

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Introduction

Pneumatic V-type ball valve has double-acting and single-acting (spring return), and adopts rack and pinion structure transmission, which is safer and more reliable; large-diameter valve adopts AW series pneumatic actuator, shift fork structure transmission, reasonable structure and output torque Big.

Pneumatic V-type ball valve according to the sealing performance is divided into soft seal and hard seal; according to the adjustment mode is divided into regulation type and cut-off type, cut-off type according to the role of the form of single-acting and double-acting, regulating type for double-acting. The unique advantage of the single-acting type is that once the power source fails, the ball valve will automatically be in the closed or open position according to the requirements of the control system.

Working principle

Pneumatic V-shaped ball valve has a special shape of fixed V-shaped notch ball and adjustable metal valve seat structure. When the valve is closed, the V-shaped notch and the valve seat form a wedge-shaped shearing effect, which can prevent the dirt between the ball and the valve seat. The phenomenon of seizure is self-cleaning. It is especially suitable for media containing fiber slurry, sewage and viscous particles. It can be continuously adjusted with valve positioner, and has small flow resistance and wide adjustment range, is a wide range of high-quality control valve.

Main technical parameters

Valve body form	Straight through cast ball valve
Nominal diameter	DN25～400mm
Nominal pressure	PN1.6、2.5、4.0、6.4 MPa
Flange standard	GB、JB、HG、ANSI、JIS等
Connection form	Wafer type, flange type
Valve cover form	Integral type (applicable temperature -45~400 ℃)
Type of gland	Bolt compression type
Seal packing	V-type PTFE filler, impregnated PTFE asbestos filler, asbestos textile filler, graphite filler
Spool form	Ball type spool with V-cut
flow characteristics	Approximate equal percentage (see flow characteristic curve)

Material List of Main Parts

Material \Material Code		C	P	R
Main parts	Valve body	WCB	ZG1Cr18Ni9Ti	ZG0Cr18Ni12Mo2Ti
	Ball Plate	2Cr13	ZG1Cr18Ni9Ti	ZG0Cr18Ni12Mo2Ti
	Stem	2Cr13	1Cr18Ni9Ti	0Cr18Ni12Mo2Ti
	Sealing ring	cemented carbide
	Packing	PTFE, soft graphite
Applicable working conditions	Applicable media	Water, steam, oil	Nitric acid	Acetic acid
Applicable working conditions	Applicable temperature	-28 ℃ ~ 500 ℃

Main outline and connection dimension

PN（MPa）	DN（mm）	Dimensions (mm)
		L	Interclamp connection	Flange connection						H
		L	D	D	D1	D2	D6	b	Z-d	H
1.6	25	102	64	115	85	5	-	14/16	4-14	233
	40	114	82	145/150	110	85/84	-	16/18	4-18	280
	50	124	100	160/165	125	100/99	-	16/20	4-18	362
	65	145	118	180/185	145	120/188	-	18/20	4-18	377
	80	165	130	195/200	160	135/132	-	20	8-18	410
	100	194	155	215/220	180	155/150	-	20/22	8-18	423
	125	210	185	245/250	210	185/184	-	22	8-18	436
	150	229	216	280/285	240	210/211	-	24	8-23/8-22	653
	200	243	264	335/340	295	265/266	-	26/24	12-23/12-22	703
	250	297	328	405	355	320/319	-	30/26	12-25/12-26	787
	300	338	373	460	410	375/370	-	30/28	12-25/12-26	827
2.5	25	102	64	115	85	65	-	16	4-14	233
	40	114	82	145/150	110	85/84	-	18	4-18	280
	50	124	100	160/165	125	100/99	-	20	4-18	362
	65	145	118	160/185	145	120/118	-	22	8-18	377
	80	165	130	195/200	160	135/132	-	22-24	8-18	410
	100	194	155	230/235	190	160/156	-	24	8-23/8-22	423
	125	210	185	270	220	188/184	-	28/26	8-25/8-26	436
	150	229	216	300	250	218/211	-	30/28	8-25/12-26	653
	200	243	264	360	310	278/274	-	34/30	12-25/12-26	703
	250	297	328	425	370	332/330	-	36/32	12-30	787
	300	338	373	485	430	390/389	-	40/34	16-30	827

Tianjin Hualida Valve Co., Ltd.

Address: Tianjin Jinan Industrial Development Zone
Mobile Phone: +86 15022758886
Website: www.hualidavalve.com
Mailbox: hualidavalve@163.com

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