Pneumatic cage guided control valve

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Email：info@shxvalve.com

Address: NO.720, Suide Road, Jiading District,Shanghai, China.

Model：

Pneumatic cage guided control valve Feature

Pneumatic cage guided control valve adopts pressure-balanced spool structure, allowed large pressure differential, low noise and steady and reliable actuation;Actuator of Pneumatic cage guided control valve multi-spring circular equal layout, using high strength rubber diaphragm actuation parts,with small structure and large output force

Pneumatic control valve Body type:	straight through casting globe type
Spool type:	balanced cage guided sleeve type
Nominal size:	DN20~300,、 NPS 3/4〞~ 12〞
Nominal pressure:	PN16 ~ 100、 CLASS 150LB ~ 600LB
Connection: flange:	FF、RF、MF、RTJ
Welding:	SW、BW
Flange dimension:	According to to IEC 60534
Pneumatic cage guided control valve Bonnet type:	Ⅰ:standard type（-20℃~230℃） Ⅱ:Radiator type: （-45℃~ high than 230℃ occasion） Ⅲ:Low temperature extended type（-196℃~ -45℃） Ⅳ:Bellow seal type Ⅴ:Warm insulation Jacket type
Packing:	V type PFTE packing, flex. graphite packing, etc.
Gasket:	Metal graphite packing
Actuator:	Pneumatic: multi-spring diaphragm actuator, piston type actuator.

Component name	Control Valve Material
Body/Bonnet	WCB/WCC/WC6/CF8/CF8M/CF3M
Valve spool/Seat	304/316/316L(overlaying stellite alloy)
Packing	Normal:-196～150℃ is PTFE,RTFE,>230℃ is flexible graphite
Gasket	Normal:Stainless steel with flexible graphite,Special:Metal tooth type gasket
Diaphragm Cover	Normal:Q235,Special:304
Diaphragm	NBR with reinforced polyester fabric
Spring	Normal:60Si2Mn,Special:50CrVa
Control valve stem	2Cr13/17-4PH/304/316/316L

Pneumatic control valve Flow characteristic	Linear, percentage, quick open
Allowable range	50: 1
Rated Cv value	Percentage CV10~1400 ，linear CV11~1500
ZJHM Pneumatic Cage guided control valve Allowable leakage	Metal seal:Ⅱgrade（0.5% rated capacity） Soft seal: V grade Leakage standard: GB/T 4213
ZJHM Pneumatic cage guided control valve Performance
Intrinsic error (%)	±1.0
Return difference(%)	≤1.0
Dead zone(%)	≤1.0
Difference from beginning to end point(%)	±2.5
Rated travel difference(%)	≤2.5

Special test	Material penetration flaw detection (PT), radiator test (RT), flow characteristic test, low temperature test.
Special treatment	Trim nitrogen treatment, seat hard alloy treatment.
Special rinse	Degreasing and dehydration treatment
Special condition	Special piping or connection, vacuum condition, S.S fastener, special coating.
Special dimension	Customized face to face length or dimension
Test and inspection	Third party test report

Pneumatic control valve Type\ Method	Pneumatic diaphragm actuator
	ZH23～ZH56
	Multi-spring type
Usage	Regulating type, ON-OFF type
Air supply pressure or Power supply voltage	Air supply pressure (Spring range) 140（20～100）Kpa G 240 (40～200) Kpa G 280 (80～240) Kpa G
Connector	Air pipe connector: RC1/4
Direct action	Pressure increase, stem descend, valve close.
Reaction	Pressure increase, stem ascend, valve open.
Input signal	40～20mA.DC（with positioner）
Lag	≤1%FS（with positioner）
Linear type	2%FS（with positioner）
Environmental temperature	-10℃～+70℃
Pneumatic cage guided control valve Accessories	E/P, P/P valve positioner, filter regulator, valve converter, solenoid valve, limited switch Non-standard accessories, need special customized notes.

Pneumatic cage guided control valvee CV values and stroke

I、Pneumatic cage guided control valve: high capacity Spool（%V、LV）

Nominal diameter		32	40	50	65	80	100	125	150	200	250	300	350
Seat diameter		32	40	50	65	80	100	125	150	200	250	300	350
Rated Cv value	The percentage of properties	24	36	60	100	140	220	320	420	820	1000	1440	1900
Rated Cv value	Linear characteristic	26	40	75	110	150	240	365	435	850	1035	1490	2000
Rated travel		25			38			50		75	100		150

II、Pneumatic cage guided control valve:High Precision Flow characteristics Spool (% VF, EVF)
The datasheet see our catelogue.

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