Pneumatic jacketed control valve

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Model：

Pneumatic jacketed control valve Feature
Pneumatic jacketed control valve mainly applied to the occasions of thermal insulation,full the heat medium into the gap between valve body and metal jacket to keep thermal insulation and prevent fluid crystallization occurs, as well as the increase of viscosity, which due to the temperature reduction.
Pneumatic jacketed control valve muti-springs pneumatic reinforce actuator makes the control valve realize the conversion of normal close and normal open on site easily,the spring can be effectively protected from the corrosion to prolong the service life of control valve actuator and convenient for customers operation. The actuator of Pneumatic jacketed control valve and the intelligent control valve positioner are connected pipeless to strengthen the antisemitic performance,stability and precision adjustment, to meet to exactly control of the working conditions.

Pneumatic jacketed control valve Body type:	straight through casting globe type with jacketed
Spool type:	non-balanced single seat plug type
Nominal size:	DN20~200,、 NPS 3/4〞~ 8〞
Nominal pressure:	PN16 ~ 100、 CLASS 150LB ~ 600LB
Connection: flange:	FF、RF、MF、RTJ
Welding:	SW、BW
Flange dimension:	According to to IEC 60534
Pneumatic jacketed 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
Pneumatic jacketed control valve actuator:	Pneumatic: multi-spring diaphragm actuator, piston type actuator.

Component name	Pneumatic jacketed control val veMaterial
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 jacketed control valve Flow characteristic	Linear, percentage, quick open
Allowable range	50: 1 (CV<6.3 30: 1)
Rated Cv value	Percentage CV1.6~630 ，linear CV1.8~690
Pneumatic jacketed control valve Allowable leakage	Metal seal: IV grade（0.01% rated capacity） Soft seal: VI grade（foam grade） Leakage standard: GB/T 4213
Pneumatic jacketed control valve Performance
Intrinsic error %		±1.5
Return difference, %		≤1.5
Dead zone, %		≤0.6
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

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 jacketed control valve Accessories	E/P, P/P valve positioner, filter regulator, valve converter, solenoid valve, limited switch Non-standard accessories, need special customized notes.

Seat diameter(mm)		10	12	15	20	25	32	40	50	65	80	100	125	150	200
Rated Cv	Percentage	1.6	2.5	4.0	6.3	10	16	25	40	63	100	160	250	400	630
Rated Cv	Linear	1.8	2.8	4.4	6.9	11	17.6	27.5	44	69	110	176	275	440	690
Nom. size	Travel	Option flow characteristic Cv. (★standard ●recommanded ○customized)
DN20	16mm	●	●	●	★
DN25	16mm	●	●	●	●	★
DN32	25 mm	○	○	○	○	○	★
DN40			○	○	○	○	●	★
DN50				○	○	○	●	●	★
DN65	40mm						○	○	○	★
DN80							○	○	○	●	★
DN100							○	○	○	●	●	★
DN125	60mm									○	○	○	★
DN150											○	○	●	★
DN200											○	○	●	●	★
Pneumatic actuator Diaphragm area, Ae(cm2)		ZHA/B-22					ZHA/B-23			ZHA/B-34			ZHA/B-45
Pneumatic actuator Diaphragm area, Ae(cm2)		350					350			560			900
Action	Spring range	Pneumatic jacketed control valve Metal sealing allowable pressure difference (MPa)
Air open	20-100KPa	4.46	3.09	1.98	1.16	0.7	0.44	0.28	0.18	0.17	0.11	0.07	0.07	0.05	0.03
	40-200 KPa	6.4	6.4	5.94	3.34	2.14	1.31	0.84	0.53	0.51	0.33	0.21	0.22	0.15	0.09
	80-240 KPa	6.4	6.4	6.4	6.4	4.99	3.05	1.95	1.25	1.18	0.78	0.5	0.51	0.36	0.21
Air close	20-100KPa	6.4	6.19	3.96	2.23	2.14	0.87	0.56	0.35	0.34	0.22	0.14	0.15	0.1	0.06
	40-200 KPa	6.4	6.4	6.4	6.4	6.4	5.86	3.64	2.3	2.21	1.43	0.91	0.95	0.66	0.37
	80-240 KPa	6.4	6.4	6.4	6.4	6.4	6.4	5.04	3.18	3.06	1.98	1.26	1.32	0.92	0.52

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