Pneumatic sleeve regulating valve

First, an overview of pneumatic sleeve regulating valve

Pneumatic   sleeve control valve is a pressure balance type control valve, the use   of sleeve-oriented, pressure-balanced double seal surface valve body,   equipped with multi-spring pneumatic actuator. S-stream   flow was linear, the overall work balance, allowing pressure, flow   characteristics of accurate, low noise characteristics. Especially suitable for large flow, large pressure difference before and after the valve, leaks do not engage in the occasion. This   series of products are room temperature type, high temperature type,   low temperature type, regulation cut off, bellows sealed and other   forms. Nominal   product pressure rating PN1.6,4.0, 6.4,10.0; body diameter range   DN20-300, the fluid temperature -196 ~ + 560 ℃ range of a variety of   grades. Leakage levels are Ⅳ, Ⅴ, Ⅵ. Flow characteristics of a straight line, equal percentage characteristics. A variety of different specifications to choose from.

 

Second, pneumatic sleeve valve parts of the main material

Body made of carbon steel					Body made of stainless steel
1	Body	WCB	LCB	WC9	1	Body	WCB	LCB	WC9
2	Gasket	316+ graphite / PTFE			2	Gasket	316+ graphite / PTFE
3	Sleeve	304	304	304	3	Sleeve	304	304	304
4	Spool	304	304	304	4	Spool	304	304	304
5	cap	WCB	LCB	WC9	5	cap	WCB	LCB	WC9
6	Valve stem	304	304	304	6	Valve stem	304	304	304
7	filler	PTFE / flexible graphite			7	filler	PTFE / flexible graphite
8	spring	65Mn			8	spring	65Mn
9	Nut	304	304	304	9	Nut	304	316	316L

 

Third, pneumatic sleeve valve main technical parameters

Nominal diameter DN (mm)		20	25	32	40	50	65	80	100	125	150	200
Rated flow               coefficient KV	straight line	6.9	11	17.6	27.5	44	69	110	176	275	440	690
	Equal percentage	6.3	10	16	25	40	63	100	160	250	400	630
Actuator               Model	Is the role	ZHA-22		ZHA-23			ZHA-34			ZHA-45
	reaction	ZHB-22		ZHB-23			ZHB-34			ZHB-45
Rated stroke L (mm)		16		25			40			60
Diaphragm effective area Ae (cm2)		280		400			600			1000
Nominal pressure PN (MPa)		1.6 2.5 4.0 6.4 10.0
Inherent flow characteristics		Straight line percentage
Inherent adjustable R		50: 1
Signal range Pr (KPa)		20-60, 20-100, 40-200, 60-100, 80-240
Air pressure Ps (MPa)		0.14, 0.25, 0.28, 0.40

 

Fourth, pneumatic sleeve valve main performance indicators

Serial number	project			Standard control valve		Cooling, low temperature control valve
				Without locator	With locator	Without locator	With locator
1	Basic error <(%)			± 5	± 1	± 15	± 4
2	Back to the difference <(%)			3	1	10	3
3	Dead zone <(%)			3	0.4	8	1
4	Always point                deviation                <(%)	Open                air	Start                point	± 2.5	± 1	± 6	± 2.5
			end	± 5		± 15
		Qi off	Start                point	± 5		± 15
			end	± 2.5		± 6
5				± 2.5	+2.5	+6	+2.5

 

Fifth, pneumatic sleeve valve size

Nominal diameter (DN)		20	25	32	40	50	65	80	100	125	150	200
Structure length                   (L)	PN16 / 25	184	184	200	222	254	276	298	352	420	451	543
	PN40	184	184	200	222	254	276	317	368	400	473	568
	PN64,100	206	210	251	251	286	311	337	394	500	508	610
H1		128	128	152	152	160	205	205	208	273	333	364
H2		298	298	298	298	298	380	380	380	510	510	510
H3		208	208	224	228	228	334	334	342	408	453	482
H4		338	338	402	402	405	627	628	635	698	702	728
H5		53	58	68	73	80	90	98	108	123	140	168
H6		180	180	180	180	180	236	236	236	310	310	310
A		282	282	282	282	282	360	360	360	470	470	470
C		220	220	220	220	220	270	270	270	320	320	320
L1		289	289	289	289	289	347	347	347	476	476	476
Pressure Level		GB: 1.6, 2.5, 4.0, 6.4, 10.0 MPa ANSI: 150, 300, 600 LB JIS: 10, 20, 30, 40K
Execution agency		ZHB-22			ZHB-23		ZHB-34			ZHB-45